wine/dlls/user/tests/msg.c

/*
 * Unit tests for window message handling
 *
 * Copyright 1999 Ove Kaaven
 * Copyright 2003 Dimitrie O. Paun
 * Copyright 2004, 2005 Dmitry Timoshkov
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

#include <assert.h>
#include <stdarg.h>
#include <stdio.h>

#define _WIN32_WINNT 0x0500 /* For WM_CHANGEUISTATE */

#include "windef.h"
#include "winbase.h"
#include "wingdi.h"
#include "winuser.h"
#include "winnls.h"

#include "wine/test.h"

#define MDI_FIRST_CHILD_ID 2004

/* undocumented SWP flags - from SDK 3.1 */
#define SWP_NOCLIENTSIZE	0x0800
#define SWP_NOCLIENTMOVE	0x1000

#define WND_PARENT_ID		1
#define WND_POPUP_ID		2
#define WND_CHILD_ID		3

static BOOL test_DestroyWindow_flag;
static HWINEVENTHOOK hEvent_hook;

static HWND (WINAPI *pGetAncestor)(HWND,UINT);

/*
FIXME: add tests for these
Window Edge Styles (Win31/Win95/98 look), in order of precedence:
 WS_EX_DLGMODALFRAME: double border, WS_CAPTION allowed
 WS_THICKFRAME: thick border
 WS_DLGFRAME: double border, WS_CAPTION not allowed (but possibly shown anyway)
 WS_BORDER (default for overlapped windows): single black border
 none (default for child (and popup?) windows): no border
*/

typedef enum {
    sent=0x1,
    posted=0x2,
    parent=0x4,
    wparam=0x8,
    lparam=0x10,
    defwinproc=0x20,
    beginpaint=0x40,
    optional=0x80,
    hook=0x100,
    winevent_hook=0x200
} msg_flags_t;

struct message {
    UINT message;          /* the WM_* code */
    msg_flags_t flags;     /* message props */
    WPARAM wParam;         /* expected value of wParam */
    LPARAM lParam;         /* expected value of lParam */
};

/* Empty message sequence */
static const struct message WmEmptySeq[] =
{
    { 0 }
};
/* CreateWindow (for overlapped window, not initially visible) (16/32) */
static const struct message WmCreateOverlappedSeq[] = {
    { HCBT_CREATEWND, hook },
    { WM_GETMINMAXINFO, sent },
    { WM_NCCREATE, sent },
    { WM_NCCALCSIZE, sent|wparam, 0 },
    { EVENT_OBJECT_REORDER, winevent_hook|wparam|lparam, 0, 0 },
    { WM_CREATE, sent },
    { EVENT_OBJECT_CREATE, winevent_hook|wparam|lparam, 0, 0 },
    { 0 }
};
/* SetWindowPos(SWP_SHOWWINDOW|SWP_NOSIZE|SWP_NOMOVE)
 * for a not visible overlapped window.
 */
static const struct message WmSWP_ShowOverlappedSeq[] = {
    { WM_WINDOWPOSCHANGING, sent|wparam, SWP_SHOWWINDOW|SWP_NOSIZE|SWP_NOMOVE },
    { EVENT_OBJECT_SHOW, winevent_hook|wparam|lparam, 0, 0 },
    { WM_NCPAINT, sent|wparam|optional, 1 },
    { WM_GETTEXT, sent|defwinproc|optional },
    { WM_ERASEBKGND, sent|optional },
    { HCBT_ACTIVATE, hook },
    { EVENT_SYSTEM_FOREGROUND, winevent_hook|wparam|lparam, 0, 0 },
    { WM_QUERYNEWPALETTE, sent|wparam|lparam|optional, 0, 0 },
    { WM_WINDOWPOSCHANGING, sent|wparam|optional, SWP_NOSIZE|SWP_NOMOVE }, /* Win9x: SWP_NOSENDCHANGING */
    { WM_ACTIVATEAPP, sent|wparam, 1 },
    { WM_NCACTIVATE, sent|wparam, 1 },
    { WM_GETTEXT, sent|defwinproc|optional },
    { WM_ACTIVATE, sent|wparam, 1 },
    { HCBT_SETFOCUS, hook },
    { WM_IME_SETCONTEXT, sent|wparam|defwinproc|optional, 1 },
    { WM_IME_NOTIFY, sent|defwinproc|optional },
    { EVENT_OBJECT_FOCUS, winevent_hook|wparam|lparam, OBJID_CLIENT, 0 },
    { WM_SETFOCUS, sent|wparam|defwinproc, 0 },
    { WM_NCPAINT, sent|wparam|optional, 1 },
    { WM_GETTEXT, sent|defwinproc|optional },
    { WM_ERASEBKGND, sent|optional },
    /* Win9x adds SWP_NOZORDER below */
    { WM_WINDOWPOSCHANGED, sent, /*|wparam, SWP_SHOWWINDOW|SWP_NOSIZE|SWP_NOMOVE|SWP_NOCLIENTSIZE|SWP_NOCLIENTMOVE*/ },
    { WM_NCCALCSIZE, sent|wparam|optional, 1 },
    { WM_NCPAINT, sent|wparam|optional, 1 },
    { WM_ERASEBKGND, sent|optional },
    { 0 }
};
/* SetWindowPos(SWP_HIDEWINDOW|SWP_NOSIZE|SWP_NOMOVE)
 * for a visible overlapped window.
 */
static const struct message WmSWP_HideOverlappedSeq[] = {
    { WM_WINDOWPOSCHANGING, sent|wparam, SWP_HIDEWINDOW|SWP_NOSIZE|SWP_NOMOVE },
    { EVENT_OBJECT_HIDE, winevent_hook|wparam|lparam, 0, 0 },
    { WM_WINDOWPOSCHANGED, sent|wparam, SWP_HIDEWINDOW|SWP_NOSIZE|SWP_NOMOVE|SWP_NOZORDER|SWP_NOCLIENTSIZE|SWP_NOCLIENTMOVE },
    { 0 }
};

/* SetWindowPos(SWP_NOZORDER|SWP_NOACTIVATE|SWP_NOMOVE)
 * for a visible overlapped window.
 */
static const struct message WmSWP_ResizeSeq[] = {
    { WM_WINDOWPOSCHANGING, sent|wparam, SWP_NOACTIVATE|SWP_NOZORDER|SWP_NOMOVE },
    { WM_GETMINMAXINFO, sent|defwinproc },
    { WM_NCCALCSIZE, sent|wparam, TRUE },
    { WM_NCPAINT, sent|optional },
    { WM_GETTEXT, sent|defwinproc|optional },
    { WM_ERASEBKGND, sent|optional },
    { WM_WINDOWPOSCHANGED, sent|wparam, SWP_NOACTIVATE|SWP_NOMOVE|SWP_NOZORDER|SWP_NOCLIENTMOVE },
    { WM_SIZE, sent|defwinproc|wparam, SIZE_RESTORED },
    { WM_NCCALCSIZE, sent|wparam|optional, TRUE },
    { WM_NCPAINT, sent|optional },
    { WM_GETTEXT, sent|defwinproc|optional },
    { WM_ERASEBKGND, sent|optional },
    { EVENT_OBJECT_LOCATIONCHANGE, winevent_hook|wparam|lparam, 0, 0 },
    { 0 }
};

/* SetWindowPos(SWP_NOZORDER|SWP_NOACTIVATE|SWP_NOMOVE)
 * for a visible popup window.
 */
static const struct message WmSWP_ResizePopupSeq[] = {
    { WM_WINDOWPOSCHANGING, sent|wparam, SWP_NOACTIVATE|SWP_NOZORDER|SWP_NOMOVE },
    { WM_NCCALCSIZE, sent|wparam, TRUE },
    { WM_NCPAINT, sent|optional },
    { WM_GETTEXT, sent|defwinproc|optional },
    { WM_ERASEBKGND, sent|optional },
    { WM_WINDOWPOSCHANGED, sent|wparam, SWP_NOACTIVATE|SWP_NOMOVE|SWP_NOZORDER|SWP_NOCLIENTMOVE },
    { WM_SIZE, sent|defwinproc|wparam, SIZE_RESTORED },
    { WM_NCCALCSIZE, sent|wparam|optional, TRUE },
    { WM_NCPAINT, sent|optional },
    { WM_GETTEXT, sent|defwinproc|optional },
    { WM_ERASEBKGND, sent|optional },
    { EVENT_OBJECT_LOCATIONCHANGE, winevent_hook|wparam|lparam, 0, 0 },
    { 0 }
};

/* SetWindowPos(SWP_NOZORDER|SWP_NOACTIVATE|SWP_NOSIZE)
 * for a visible overlapped window.
 */
static const struct message WmSWP_MoveSeq[] = {
    { WM_WINDOWPOSCHANGING, sent|wparam, SWP_NOACTIVATE|SWP_NOZORDER|SWP_NOSIZE },
    { WM_NCPAINT, sent|optional },
    { WM_GETTEXT, sent|defwinproc|optional },
    { WM_ERASEBKGND, sent|optional },
    { WM_WINDOWPOSCHANGED, sent|wparam, SWP_NOACTIVATE|SWP_NOSIZE|SWP_NOZORDER|SWP_NOCLIENTSIZE },
    { WM_MOVE, sent|defwinproc|wparam, 0 },
    { EVENT_OBJECT_LOCATIONCHANGE, winevent_hook|wparam|lparam, 0, 0 },
    { 0 }
};

/* SetWindowPos(SWP_NOSIZE|SWP_NOMOVE|SWP_NOACTIVATE|
                SWP_NOZORDER|SWP_FRAMECHANGED)
 * for a visible overlapped window with WS_CLIPCHILDREN style set.
 */
static const struct message WmSWP_FrameChanged_clip[] = {
    { WM_WINDOWPOSCHANGING, sent|wparam|parent, SWP_NOSIZE|SWP_NOMOVE|SWP_NOACTIVATE|SWP_NOZORDER|SWP_FRAMECHANGED },
    { WM_NCCALCSIZE, sent|wparam|parent, 1 },
    { WM_NCPAINT, sent|parent }, /* wparam != 1 */
    { WM_GETTEXT, sent|parent|defwinproc|optional },
    { WM_ERASEBKGND, sent|parent|optional }, /* FIXME: remove optional once Wine is fixed */
    { WM_NCPAINT, sent }, /* wparam != 1 */
    { WM_ERASEBKGND, sent },
    { WM_WINDOWPOSCHANGED, sent|wparam|parent, SWP_NOSIZE|SWP_NOMOVE|SWP_NOACTIVATE|SWP_NOZORDER|SWP_FRAMECHANGED|SWP_NOCLIENTSIZE|SWP_NOCLIENTMOVE },
    { WM_PAINT, sent },
    { 0 }
};
/* SetWindowPos(SWP_NOSIZE|SWP_NOMOVE|SWP_DEFERERASE|SWP_NOACTIVATE|
                SWP_NOZORDER|SWP_FRAMECHANGED)
 * for a visible overlapped window.
 */
static const struct message WmSWP_FrameChangedDeferErase[] = {
    { WM_WINDOWPOSCHANGING, sent|wparam|parent, SWP_NOSIZE|SWP_NOMOVE|SWP_DEFERERASE|SWP_NOACTIVATE|SWP_NOZORDER|SWP_FRAMECHANGED },
    { WM_NCCALCSIZE, sent|wparam|parent, 1 },
    { WM_WINDOWPOSCHANGED, sent|wparam|parent, SWP_NOSIZE|SWP_NOMOVE|SWP_DEFERERASE|SWP_NOACTIVATE|SWP_NOZORDER|SWP_FRAMECHANGED|SWP_NOCLIENTSIZE|SWP_NOCLIENTMOVE },
    { WM_PAINT, sent|parent },
    { WM_NCPAINT, sent|beginpaint|parent }, /* wparam != 1 */
    { WM_GETTEXT, sent|beginpaint|parent|defwinproc|optional },
    { WM_PAINT, sent },
    { WM_NCPAINT, sent|beginpaint }, /* wparam != 1 */
    { WM_ERASEBKGND, sent|beginpaint },
    { 0 }
};

/* SetWindowPos(SWP_NOSIZE|SWP_NOMOVE|SWP_NOACTIVATE|
                SWP_NOZORDER|SWP_FRAMECHANGED)
 * for a visible overlapped window without WS_CLIPCHILDREN style set.
 */
static const struct message WmSWP_FrameChanged_noclip[] = {
    { WM_WINDOWPOSCHANGING, sent|wparam|parent, SWP_NOSIZE|SWP_NOMOVE|SWP_NOACTIVATE|SWP_NOZORDER|SWP_FRAMECHANGED },
    { WM_NCCALCSIZE, sent|wparam|parent, 1 },
    { WM_NCPAINT, sent|parent }, /* wparam != 1 */
    { WM_GETTEXT, sent|parent|defwinproc|optional },
    { WM_ERASEBKGND, sent|parent|optional }, /* FIXME: remove optional once Wine is fixed */
    { WM_WINDOWPOSCHANGED, sent|wparam|parent, SWP_NOSIZE|SWP_NOMOVE|SWP_NOACTIVATE|SWP_NOZORDER|SWP_FRAMECHANGED|SWP_NOCLIENTSIZE|SWP_NOCLIENTMOVE },
    { WM_PAINT, sent },
    { WM_NCPAINT, sent|beginpaint }, /* wparam != 1 */
    { WM_ERASEBKGND, sent|beginpaint },
    { 0 }
};

/* ShowWindow(SW_SHOW) for a not visible overlapped window */
static const struct message WmShowOverlappedSeq[] = {
    { WM_SHOWWINDOW, sent|wparam, 1 },
    { WM_NCPAINT, sent|wparam|optional, 1 },
    { WM_WINDOWPOSCHANGING, sent|wparam, SWP_SHOWWINDOW|SWP_NOSIZE|SWP_NOMOVE },
    { EVENT_OBJECT_SHOW, winevent_hook|wparam|lparam, 0, 0 },
    { WM_NCPAINT, sent|wparam|optional, 1 },
    { WM_GETTEXT, sent|defwinproc|optional },
    { WM_ERASEBKGND, sent|optional },
    { HCBT_ACTIVATE, hook },
    { EVENT_SYSTEM_FOREGROUND, winevent_hook|wparam|lparam, 0, 0 },
    { WM_QUERYNEWPALETTE, sent|wparam|lparam|optional, 0, 0 },
    { WM_WINDOWPOSCHANGING, sent|wparam, SWP_NOSIZE|SWP_NOMOVE },
    { WM_ACTIVATEAPP, sent|wparam, 1 },
    { WM_NCACTIVATE, sent|wparam, 1 },
    { WM_GETTEXT, sent|defwinproc|optional },
    { WM_ACTIVATE, sent|wparam, 1 },
    { HCBT_SETFOCUS, hook },
    { WM_IME_SETCONTEXT, sent|wparam|defwinproc|optional, 1 },
    { WM_IME_NOTIFY, sent|defwinproc|optional },
    { EVENT_OBJECT_FOCUS, winevent_hook|wparam|lparam, OBJID_CLIENT, 0 },
    { WM_SETFOCUS, sent|wparam|defwinproc, 0 },
    { WM_NCPAINT, sent|wparam|optional, 1 },
    { WM_GETTEXT, sent|defwinproc|optional },
    { WM_ERASEBKGND, sent|optional },
    /* Win9x adds SWP_NOZORDER below */
    { WM_WINDOWPOSCHANGED, sent, /*|wparam, SWP_SHOWWINDOW|SWP_NOSIZE|SWP_NOMOVE|SWP_NOCLIENTSIZE|SWP_NOCLIENTMOVE*/ },
    { WM_NCCALCSIZE, sent|optional },
    { WM_NCPAINT, sent|optional },
    { WM_ERASEBKGND, sent|optional },
#if 0 /* CreateWindow/ShowWindow(SW_SHOW) also generates WM_SIZE/WM_MOVE
       * messages. Does that mean that CreateWindow doesn't set initial
       * window dimensions for overlapped windows?
       */
    { WM_SIZE, sent },
    { WM_MOVE, sent },
#endif
    { 0 }
};
/* ShowWindow(SW_SHOWMAXIMIZED) for a not visible overlapped window */
static const struct message WmShowMaxOverlappedSeq[] = {
    { HCBT_MINMAX, hook|lparam, 0, SW_MAXIMIZE },
    { WM_GETMINMAXINFO, sent },
    { WM_WINDOWPOSCHANGING, sent|wparam, SWP_SHOWWINDOW|SWP_FRAMECHANGED|0x8000 },
    { WM_GETMINMAXINFO, sent|defwinproc },
    { WM_NCCALCSIZE, sent|wparam, TRUE },
    { EVENT_OBJECT_SHOW, winevent_hook|wparam|lparam, 0, 0 },
    { HCBT_ACTIVATE, hook },
    { EVENT_SYSTEM_FOREGROUND, winevent_hook|wparam|lparam, 0, 0 },
    { WM_QUERYNEWPALETTE, sent|wparam|lparam|optional, 0, 0 },
    { WM_WINDOWPOSCHANGING, sent|wparam, SWP_NOSIZE|SWP_NOMOVE },
    { WM_ACTIVATEAPP, sent|wparam, 1 },
    { WM_NCACTIVATE, sent|wparam, 1 },
    { WM_GETTEXT, sent|defwinproc|optional },
    { WM_ACTIVATE, sent|wparam, 1 },
    { HCBT_SETFOCUS, hook },
    { WM_IME_SETCONTEXT, sent|wparam|defwinproc|optional, 1 },
    { WM_IME_NOTIFY, sent|defwinproc|optional },
    { EVENT_OBJECT_FOCUS, winevent_hook|wparam|lparam, OBJID_CLIENT, 0 },
    { WM_SETFOCUS, sent|wparam|defwinproc, 0 },
    { WM_NCPAINT, sent|wparam|optional, 1 },
    { WM_GETTEXT, sent|defwinproc|optional },
    { WM_ERASEBKGND, sent|optional },
    /* Win9x adds SWP_NOZORDER below */
    { WM_WINDOWPOSCHANGED, sent, /*|wparam, SWP_SHOWWINDOW|SWP_NOSIZE|SWP_NOMOVE|SWP_NOCLIENTSIZE|SWP_NOCLIENTMOVE*/ },
    { WM_MOVE, sent|defwinproc },
    { WM_SIZE, sent|defwinproc },
    { WM_NCCALCSIZE, sent|optional },
    { WM_NCPAINT, sent|optional },
    { WM_ERASEBKGND, sent|optional },
    { EVENT_OBJECT_LOCATIONCHANGE, winevent_hook|wparam|lparam, 0, 0 },
    { EVENT_OBJECT_LOCATIONCHANGE, winevent_hook|wparam|lparam, 0, 0 },
    { 0 }
};
/* ShowWindow(SW_HIDE) for a visible overlapped window */
static const struct message WmHideOverlappedSeq[] = {
    { WM_SHOWWINDOW, sent|wparam, 0 },
    { WM_WINDOWPOSCHANGING, sent|wparam, SWP_HIDEWINDOW|SWP_NOSIZE|SWP_NOMOVE },
    { EVENT_OBJECT_HIDE, winevent_hook|wparam|lparam, 0, 0 },
    { WM_WINDOWPOSCHANGED, sent|wparam, SWP_HIDEWINDOW|SWP_NOSIZE|SWP_NOMOVE|SWP_NOZORDER|SWP_NOCLIENTSIZE|SWP_NOCLIENTMOVE },
    { WM_SIZE, sent },
    { WM_MOVE, sent },
    { WM_NCACTIVATE, sent|wparam, 0 },
    { WM_ACTIVATE, sent|wparam, 0 },
    { WM_ACTIVATEAPP, sent|wparam, 0 },
    { WM_KILLFOCUS, sent|wparam, 0 },
    { WM_IME_SETCONTEXT, sent|wparam|optional, 0 },
    { WM_IME_NOTIFY, sent|optional|defwinproc },
    { 0 }
};
/* DestroyWindow for a visible overlapped window */
static const struct message WmDestroyOverlappedSeq[] = {
    { HCBT_DESTROYWND, hook },
    { WM_WINDOWPOSCHANGING, sent|wparam, SWP_HIDEWINDOW|SWP_NOACTIVATE|SWP_NOSIZE|SWP_NOMOVE|SWP_NOZORDER },
    { EVENT_OBJECT_HIDE, winevent_hook|wparam|lparam, 0, 0 },
    { WM_WINDOWPOSCHANGED, sent|wparam, SWP_HIDEWINDOW|SWP_NOACTIVATE|SWP_NOSIZE|SWP_NOMOVE|SWP_NOZORDER|SWP_NOCLIENTSIZE|SWP_NOCLIENTMOVE },
    { WM_NCACTIVATE, sent|wparam, 0 },
    { WM_ACTIVATE, sent|wparam, 0 },
    { WM_ACTIVATEAPP, sent|wparam, 0 },
    { WM_KILLFOCUS, sent|wparam, 0 },
    { WM_IME_SETCONTEXT, sent|wparam|optional, 0 },
    { WM_IME_NOTIFY, sent|optional|defwinproc },
    { EVENT_OBJECT_DESTROY, winevent_hook|wparam|lparam, 0, 0 },
    { WM_DESTROY, sent },
    { WM_NCDESTROY, sent },
    { 0 }
};
/* CreateWindow (for a child popup window, not initially visible) */
static const struct message WmCreateChildPopupSeq[] = {
    { HCBT_CREATEWND, hook },
    { WM_NCCREATE, sent }, 
    { WM_NCCALCSIZE, sent|wparam, 0 },
    { WM_CREATE, sent },
    { EVENT_OBJECT_CREATE, winevent_hook|wparam|lparam, 0, 0 },
    { WM_SIZE, sent },
    { WM_MOVE, sent },
    { 0 }
};
/* CreateWindow (for a popup window, not initially visible,
 * which sets WS_VISIBLE in WM_CREATE handler)
 */
static const struct message WmCreateInvisiblePopupSeq[] = {
    { HCBT_CREATEWND, hook },
    { WM_NCCREATE, sent }, 
    { WM_NCCALCSIZE, sent|wparam, 0 },
    { WM_CREATE, sent },
    { WM_STYLECHANGING, sent },
    { WM_STYLECHANGED, sent },
    { EVENT_OBJECT_CREATE, winevent_hook|wparam|lparam, 0, 0 },
    { WM_SIZE, sent },
    { WM_MOVE, sent },
    { 0 }
};
/* SetWindowPos(SWP_SHOWWINDOW|SWP_NOSIZE|SWP_NOMOVE|SWP_NOACTIVATE|SWP_NOZORDER)
 * for a popup window with WS_VISIBLE style set
 */
static const struct message WmShowVisiblePopupSeq_2[] = {
    { WM_WINDOWPOSCHANGING, sent|wparam, 0 },
    { 0 }
};
/* SetWindowPos(SWP_SHOWWINDOW|SWP_NOSIZE|SWP_NOMOVE)
 * for a popup window with WS_VISIBLE style set
 */
static const struct message WmShowVisiblePopupSeq_3[] = {
    { WM_WINDOWPOSCHANGING, sent|wparam, 0 },
    { HCBT_ACTIVATE, hook },
    { EVENT_SYSTEM_FOREGROUND, winevent_hook|wparam|lparam, 0, 0 },
    { WM_QUERYNEWPALETTE, sent|wparam|lparam|optional, 0, 0 },
    { WM_WINDOWPOSCHANGING, sent|wparam, 0 },
    { WM_NCACTIVATE, sent|wparam, 1 },
    { WM_ACTIVATE, sent|wparam, 1 },
    { HCBT_SETFOCUS, hook },
    { WM_KILLFOCUS, sent|parent },
    { WM_IME_SETCONTEXT, sent|parent|wparam|optional, 0 },
    { WM_IME_SETCONTEXT, sent|wparam|defwinproc|optional, 1 },
    { WM_IME_NOTIFY, sent|defwinproc|optional },
    { EVENT_OBJECT_FOCUS, winevent_hook|wparam|lparam, OBJID_CLIENT, 0 },
    { WM_SETFOCUS, sent|defwinproc },
    { 0 }
};
/* CreateWindow (for child window, not initially visible) */
static const struct message WmCreateChildSeq[] = {
    { HCBT_CREATEWND, hook },
    { WM_NCCREATE, sent }, 
    /* child is inserted into parent's child list after WM_NCCREATE returns */
    { WM_NCCALCSIZE, sent|wparam, 0 },
    { WM_CREATE, sent },
    { EVENT_OBJECT_CREATE, winevent_hook|wparam|lparam, 0, 0 },
    { WM_SIZE, sent },
    { WM_MOVE, sent },
    { WM_PARENTNOTIFY, sent|parent|wparam, WM_CREATE },
    { 0 }
};
/* CreateWindow (for maximized child window, not initially visible) */
static const struct message WmCreateMaximizedChildSeq[] = {
    { HCBT_CREATEWND, hook },
    { WM_NCCREATE, sent }, 
    { WM_NCCALCSIZE, sent|wparam, 0 },
    { WM_CREATE, sent },
    { EVENT_OBJECT_CREATE, winevent_hook|wparam|lparam, 0, 0 },
    { WM_SIZE, sent },
    { WM_MOVE, sent },
    { HCBT_MINMAX, hook|lparam, 0, SW_MAXIMIZE },
    { WM_GETMINMAXINFO, sent },
    { WM_WINDOWPOSCHANGING, sent|wparam, SWP_FRAMECHANGED|SWP_NOACTIVATE|0x8000 },
    { WM_NCCALCSIZE, sent|wparam, 1 },
    { WM_WINDOWPOSCHANGED, sent|wparam, SWP_FRAMECHANGED|SWP_NOACTIVATE|SWP_NOMOVE|SWP_NOZORDER|SWP_NOREDRAW|SWP_NOCLIENTMOVE|0x8000 },
    { WM_SIZE, sent|defwinproc },
    { EVENT_OBJECT_LOCATIONCHANGE, winevent_hook|wparam|lparam, 0, 0 },
    { WM_PARENTNOTIFY, sent|parent|wparam, WM_CREATE },
    { 0 }
};
/* CreateWindow (for a child window, initially visible) */
static const struct message WmCreateVisibleChildSeq[] = {
    { HCBT_CREATEWND, hook },
    { WM_NCCREATE, sent }, 
    /* child is inserted into parent's child list after WM_NCCREATE returns */
    { WM_NCCALCSIZE, sent|wparam, 0 },
    { EVENT_OBJECT_REORDER, winevent_hook|wparam|lparam, 0, 0 },
    { WM_CREATE, sent },
    { EVENT_OBJECT_CREATE, winevent_hook|wparam|lparam, 0, 0 },
    { WM_SIZE, sent },
    { WM_MOVE, sent },
    { WM_PARENTNOTIFY, sent|parent|wparam, WM_CREATE },
    { WM_SHOWWINDOW, sent|wparam, 1 },
    { WM_WINDOWPOSCHANGING, sent|wparam, SWP_SHOWWINDOW|SWP_NOSIZE|SWP_NOMOVE|SWP_NOACTIVATE|SWP_NOZORDER },
    { EVENT_OBJECT_SHOW, winevent_hook|wparam|lparam, 0, 0 },
    { WM_ERASEBKGND, sent|parent|optional },
    { WM_WINDOWPOSCHANGED, sent|wparam, SWP_SHOWWINDOW|SWP_NOSIZE|SWP_NOMOVE|SWP_NOACTIVATE|SWP_NOZORDER|SWP_NOCLIENTSIZE|SWP_NOCLIENTMOVE },
    { WM_NCCALCSIZE, sent|wparam|optional, 1 }, /* WinXP */
    { 0 }
};
/* ShowWindow(SW_SHOW) for a not visible child window */
static const struct message WmShowChildSeq[] = {
    { WM_SHOWWINDOW, sent|wparam, 1 },
    { WM_WINDOWPOSCHANGING, sent|wparam, SWP_SHOWWINDOW|SWP_NOACTIVATE|SWP_NOSIZE|SWP_NOMOVE|SWP_NOZORDER },
    { EVENT_OBJECT_SHOW, winevent_hook|wparam|lparam, 0, 0 },
    { WM_ERASEBKGND, sent|parent|optional },
    { WM_WINDOWPOSCHANGED, sent|wparam, SWP_SHOWWINDOW|SWP_NOACTIVATE|SWP_NOSIZE|SWP_NOMOVE|SWP_NOZORDER|SWP_NOCLIENTSIZE|SWP_NOCLIENTMOVE },
    { 0 }
};
/* ShowWindow(SW_HIDE) for a visible child window */
static const struct message WmHideChildSeq[] = {
    { WM_SHOWWINDOW, sent|wparam, 0 },
    { WM_WINDOWPOSCHANGING, sent|wparam, SWP_HIDEWINDOW|SWP_NOACTIVATE|SWP_NOSIZE|SWP_NOMOVE|SWP_NOZORDER },
    { EVENT_OBJECT_HIDE, winevent_hook|wparam|lparam, 0, 0 },
    { WM_ERASEBKGND, sent|parent|optional },
    { WM_WINDOWPOSCHANGED, sent|wparam, SWP_HIDEWINDOW|SWP_NOACTIVATE|SWP_NOSIZE|SWP_NOMOVE|SWP_NOZORDER|SWP_NOCLIENTSIZE|SWP_NOCLIENTMOVE },
    { 0 }
};
/* SetWindowPos(SWP_SHOWWINDOW|SWP_NOSIZE|SWP_NOMOVE)
 * for a not visible child window
 */
static const struct message WmShowChildSeq_2[] = {
    { WM_WINDOWPOSCHANGING, sent|wparam, SWP_SHOWWINDOW|SWP_NOSIZE|SWP_NOMOVE },
    { EVENT_OBJECT_SHOW, winevent_hook|wparam|lparam, 0, 0 },
    { WM_CHILDACTIVATE, sent },
    { WM_WINDOWPOSCHANGED, sent|wparam, SWP_SHOWWINDOW|SWP_NOSIZE|SWP_NOMOVE|SWP_NOZORDER|SWP_NOCLIENTSIZE|SWP_NOCLIENTMOVE },
    { 0 }
};
/* SetWindowPos(SWP_SHOWWINDOW|SWP_NOSIZE|SWP_NOMOVE|SWP_NOACTIVATE)
 * for a not visible child window
 */
static const struct message WmShowChildSeq_3[] = {
    { WM_WINDOWPOSCHANGING, sent|wparam, SWP_SHOWWINDOW|SWP_NOSIZE|SWP_NOMOVE|SWP_NOACTIVATE },
    { EVENT_OBJECT_SHOW, winevent_hook|wparam|lparam, 0, 0 },
    { WM_WINDOWPOSCHANGED, sent|wparam, SWP_SHOWWINDOW|SWP_NOSIZE|SWP_NOMOVE|SWP_NOACTIVATE|SWP_NOZORDER|SWP_NOCLIENTSIZE|SWP_NOCLIENTMOVE },
    { 0 }
};
/* SetWindowPos(SWP_SHOWWINDOW|SWP_NOSIZE|SWP_NOMOVE)
 * for a visible child window with a caption
 */
static const struct message WmShowChildSeq_4[] = {
    { WM_WINDOWPOSCHANGING, sent|wparam, SWP_SHOWWINDOW|SWP_NOSIZE|SWP_NOMOVE },
    { WM_CHILDACTIVATE, sent },
    { 0 }
};
/* ShowWindow(SW_SHOW) for child with invisible parent */
static const struct message WmShowChildInvisibleParentSeq[] = {
    { WM_SHOWWINDOW, sent|wparam, 1 },
    { 0 }
};
/* ShowWindow(SW_HIDE) for child with invisible parent */
static const struct message WmHideChildInvisibleParentSeq[] = {
    { WM_SHOWWINDOW, sent|wparam, 0 },
    { 0 }
};
/* SetWindowPos(SWP_SHOWWINDOW) for child with invisible parent */
static const struct message WmShowChildInvisibleParentSeq_2[] = {
    { WM_WINDOWPOSCHANGING, sent|wparam, SWP_SHOWWINDOW|SWP_NOSIZE|SWP_NOMOVE|SWP_NOACTIVATE|SWP_NOZORDER },
    { EVENT_OBJECT_SHOW, winevent_hook|wparam|lparam, 0, 0 },
    { WM_WINDOWPOSCHANGED, sent|wparam, SWP_SHOWWINDOW|SWP_NOSIZE|SWP_NOMOVE|SWP_NOACTIVATE|SWP_NOZORDER|SWP_NOREDRAW|SWP_NOCLIENTSIZE|SWP_NOCLIENTMOVE },
    { 0 }
};
/* SetWindowPos(SWP_HIDEWINDOW) for child with invisible parent */
static const struct message WmHideChildInvisibleParentSeq_2[] = {
    { WM_WINDOWPOSCHANGING, sent|wparam, SWP_HIDEWINDOW|SWP_NOACTIVATE|SWP_NOSIZE|SWP_NOMOVE|SWP_NOZORDER },
    { EVENT_OBJECT_HIDE, winevent_hook|wparam|lparam, 0, 0 },
    { WM_WINDOWPOSCHANGED, sent|wparam, SWP_HIDEWINDOW|SWP_NOACTIVATE|SWP_NOSIZE|SWP_NOMOVE|SWP_NOZORDER|SWP_NOREDRAW|SWP_NOCLIENTSIZE|SWP_NOCLIENTMOVE },
    { 0 }
};
/* DestroyWindow for a visible child window */
static const struct message WmDestroyChildSeq[] = {
    { HCBT_DESTROYWND, hook },
    { WM_PARENTNOTIFY, sent|parent|wparam, WM_DESTROY },
    { WM_SHOWWINDOW, sent|wparam, 0 },
    { WM_WINDOWPOSCHANGING, sent|wparam, SWP_HIDEWINDOW|SWP_NOACTIVATE|SWP_NOSIZE|SWP_NOMOVE|SWP_NOZORDER },
    { EVENT_OBJECT_HIDE, winevent_hook|wparam|lparam, 0, 0 },
    { WM_ERASEBKGND, sent|parent|optional },
    { WM_WINDOWPOSCHANGED, sent|wparam, SWP_HIDEWINDOW|SWP_NOACTIVATE|SWP_NOSIZE|SWP_NOMOVE|SWP_NOZORDER|SWP_NOCLIENTSIZE|SWP_NOCLIENTMOVE },
    { HCBT_SETFOCUS, hook }, /* set focus to a parent */
    { WM_KILLFOCUS, sent },
    { WM_IME_SETCONTEXT, sent|wparam|optional, 0 },
    { WM_IME_SETCONTEXT, sent|wparam|parent|optional, 1 },
    { EVENT_OBJECT_FOCUS, winevent_hook|wparam|lparam, OBJID_CLIENT, 0 },
    { WM_SETFOCUS, sent|parent },
    { EVENT_OBJECT_DESTROY, winevent_hook|wparam|lparam, 0, 0 },
    { WM_DESTROY, sent },
    { WM_DESTROY, sent|optional }, /* some other (IME?) window */
    { WM_NCDESTROY, sent|optional }, /* some other (IME?) window */
    { WM_NCDESTROY, sent },
    { 0 }
};
/* Moving the mouse in nonclient area */
static const struct message WmMouseMoveInNonClientAreaSeq[] = { /* FIXME: add */
    { WM_NCHITTEST, sent },
    { WM_SETCURSOR, sent },
    { WM_NCMOUSEMOVE, posted },
    { 0 }
};
/* Moving the mouse in client area */
static const struct message WmMouseMoveInClientAreaSeq[] = { /* FIXME: add */
    { WM_NCHITTEST, sent },
    { WM_SETCURSOR, sent },
    { WM_MOUSEMOVE, posted },
    { 0 }
};
/* Moving by dragging the title bar (after WM_NCHITTEST and WM_SETCURSOR) (outline move) */
static const struct message WmDragTitleBarSeq[] = { /* FIXME: add */
    { WM_NCLBUTTONDOWN, sent|wparam, HTCAPTION },
    { WM_SYSCOMMAND, sent|defwinproc|wparam, SC_MOVE+2 },
    { WM_GETMINMAXINFO, sent|defwinproc },
    { WM_ENTERSIZEMOVE, sent|defwinproc },
    { WM_WINDOWPOSCHANGING, sent|wparam|defwinproc, 0 },
    { WM_WINDOWPOSCHANGED, sent|wparam|defwinproc, 0 },
    { WM_MOVE, sent|defwinproc },
    { WM_EXITSIZEMOVE, sent|defwinproc },
    { 0 }
};
/* Sizing by dragging the thick borders (after WM_NCHITTEST and WM_SETCURSOR) (outline move) */
static const struct message WmDragThickBordersBarSeq[] = { /* FIXME: add */
    { WM_NCLBUTTONDOWN, sent|wparam, 0xd },
    { WM_SYSCOMMAND, sent|defwinproc|wparam, 0xf004 },
    { WM_GETMINMAXINFO, sent|defwinproc },
    { WM_ENTERSIZEMOVE, sent|defwinproc },
    { WM_SIZING, sent|defwinproc|wparam, 4}, /* one for each mouse movement */
    { WM_WINDOWPOSCHANGING, sent|wparam|defwinproc, 0 },
    { WM_GETMINMAXINFO, sent|defwinproc },
    { WM_NCCALCSIZE, sent|defwinproc|wparam, 1 },
    { WM_NCPAINT, sent|defwinproc|wparam, 1 },
    { WM_GETTEXT, sent|defwinproc },
    { WM_ERASEBKGND, sent|defwinproc },
    { WM_WINDOWPOSCHANGED, sent|wparam|defwinproc, 0 },
    { WM_MOVE, sent|defwinproc },
    { WM_SIZE, sent|defwinproc },
    { WM_EXITSIZEMOVE, sent|defwinproc },
    { 0 }
};
/* Resizing child window with MoveWindow (32) */
static const struct message WmResizingChildWithMoveWindowSeq[] = {
    { WM_WINDOWPOSCHANGING, sent|wparam, SWP_NOACTIVATE|SWP_NOZORDER },
    { WM_NCCALCSIZE, sent|wparam, 1 },
    { WM_ERASEBKGND, sent|optional },
    { WM_WINDOWPOSCHANGED, sent|wparam, SWP_NOACTIVATE|SWP_NOZORDER },
    { WM_MOVE, sent|defwinproc },
    { WM_SIZE, sent|defwinproc },
    { EVENT_OBJECT_LOCATIONCHANGE, winevent_hook|wparam|lparam, 0, 0 },
    { 0 }
};
/* Clicking on inactive button */
static const struct message WmClickInactiveButtonSeq[] = { /* FIXME: add */
    { WM_NCHITTEST, sent },
    { WM_PARENTNOTIFY, sent|parent|wparam, WM_LBUTTONDOWN },
    { WM_MOUSEACTIVATE, sent },
    { WM_MOUSEACTIVATE, sent|parent|defwinproc },
    { WM_SETCURSOR, sent },
    { WM_SETCURSOR, sent|parent|defwinproc },
    { WM_LBUTTONDOWN, posted },
    { WM_KILLFOCUS, posted|parent },
    { WM_SETFOCUS, posted },
    { WM_CTLCOLORBTN, posted|parent },
    { BM_SETSTATE, posted },
    { WM_CTLCOLORBTN, posted|parent },
    { WM_LBUTTONUP, posted },
    { BM_SETSTATE, posted },
    { WM_CTLCOLORBTN, posted|parent },
    { WM_COMMAND, posted|parent },
    { 0 }
};
/* Reparenting a button (16/32) */
/* The last child (button) reparented gets topmost for its new parent. */
static const struct message WmReparentButtonSeq[] = { /* FIXME: add */
    { WM_SHOWWINDOW, sent|wparam, 0 },
    { WM_WINDOWPOSCHANGING, sent|wparam, SWP_HIDEWINDOW|SWP_NOACTIVATE|SWP_NOMOVE|SWP_NOSIZE|SWP_NOZORDER },
    { EVENT_OBJECT_HIDE, winevent_hook|wparam|lparam, 0, 0 },
    { WM_ERASEBKGND, sent|parent },
    { WM_WINDOWPOSCHANGED, sent|wparam, SWP_HIDEWINDOW|SWP_NOACTIVATE|SWP_NOMOVE|SWP_NOSIZE|SWP_NOZORDER },
    { WM_WINDOWPOSCHANGING, sent|wparam, SWP_NOSIZE|SWP_NOZORDER },
    { WM_CHILDACTIVATE, sent },
    { WM_WINDOWPOSCHANGED, sent|wparam, SWP_NOSIZE|SWP_NOREDRAW|SWP_NOZORDER },
    { WM_MOVE, sent|defwinproc },
    { WM_SHOWWINDOW, sent|wparam, 1 },
    { 0 }
};
/* Creation of a custom dialog (32) */
static const struct message WmCreateCustomDialogSeq[] = {
    { HCBT_CREATEWND, hook },
    { EVENT_OBJECT_DEFACTIONCHANGE, winevent_hook|wparam|lparam, OBJID_CLIENT, 0 },
    { WM_GETMINMAXINFO, sent },
    { EVENT_OBJECT_DEFACTIONCHANGE, winevent_hook|wparam|lparam, OBJID_CLIENT, 0 },
    { WM_NCCREATE, sent },
    { EVENT_OBJECT_DEFACTIONCHANGE, winevent_hook|wparam|lparam, OBJID_CLIENT, 0 },
    { WM_NCCALCSIZE, sent|wparam, 0 },
    { EVENT_OBJECT_REORDER, winevent_hook|wparam|lparam, 0, 0 },
    { EVENT_OBJECT_DEFACTIONCHANGE, winevent_hook|wparam|lparam, OBJID_CLIENT, 0 },
    { WM_CREATE, sent },
    { EVENT_OBJECT_CREATE, winevent_hook|wparam|lparam, 0, 0 },
    { EVENT_OBJECT_DEFACTIONCHANGE, winevent_hook|wparam|lparam, OBJID_CLIENT, 0 },
    { WM_SHOWWINDOW, sent|wparam, 1 },
    { EVENT_OBJECT_DEFACTIONCHANGE, winevent_hook|wparam|lparam, OBJID_CLIENT, 0 },
    { WM_WINDOWPOSCHANGING, sent|wparam, SWP_SHOWWINDOW|SWP_NOSIZE|SWP_NOMOVE },
    { EVENT_OBJECT_SHOW, winevent_hook|wparam|lparam, 0, 0 },
    { HCBT_ACTIVATE, hook },
    { EVENT_SYSTEM_FOREGROUND, winevent_hook|wparam|lparam, 0, 0 },

    { EVENT_OBJECT_DEFACTIONCHANGE, winevent_hook|wparam|lparam, OBJID_CLIENT, 0 },

    { WM_QUERYNEWPALETTE, sent|wparam|lparam|optional, 0, 0 },
    { EVENT_OBJECT_DEFACTIONCHANGE, winevent_hook|wparam|lparam|optional, OBJID_CLIENT, 0 },

    { WM_WINDOWPOSCHANGING, sent|wparam, SWP_NOSIZE|SWP_NOMOVE },

    { EVENT_OBJECT_DEFACTIONCHANGE, winevent_hook|wparam|lparam, OBJID_CLIENT, 0 },
    { WM_NCACTIVATE, sent|wparam, 1 },
    { EVENT_OBJECT_DEFACTIONCHANGE, winevent_hook|wparam|lparam, OBJID_CLIENT, 0 },
    { WM_GETTEXT, sent|optional|defwinproc },
    { EVENT_OBJECT_DEFACTIONCHANGE, winevent_hook|wparam|lparam|optional, OBJID_CLIENT, 0 },
    { EVENT_OBJECT_DEFACTIONCHANGE, winevent_hook|wparam|lparam|optional, OBJID_CLIENT, 0 },
    { EVENT_OBJECT_DEFACTIONCHANGE, winevent_hook|wparam|lparam|optional, OBJID_CLIENT, 0 },
    { EVENT_OBJECT_DEFACTIONCHANGE, winevent_hook|wparam|lparam|optional, OBJID_CLIENT, 0 },
    { WM_GETTEXT, sent|optional|defwinproc },
    { EVENT_OBJECT_DEFACTIONCHANGE, winevent_hook|wparam|lparam|optional, OBJID_CLIENT, 0 },
    { WM_ACTIVATE, sent|wparam, 1 },
    { WM_KILLFOCUS, sent|parent },
    { EVENT_OBJECT_DEFACTIONCHANGE, winevent_hook|wparam|lparam|optional, OBJID_CLIENT, 0 },
    { WM_IME_SETCONTEXT, sent|parent|wparam|optional, 0 },
    { EVENT_OBJECT_DEFACTIONCHANGE, winevent_hook|wparam|lparam|optional, OBJID_CLIENT, 0 },
    { WM_IME_SETCONTEXT, sent|wparam|optional, 1 },
    { EVENT_OBJECT_DEFACTIONCHANGE, winevent_hook|wparam|lparam|optional, OBJID_CLIENT, 0 },
    { WM_IME_NOTIFY, sent|optional|defwinproc },
    { EVENT_OBJECT_FOCUS, winevent_hook|wparam|lparam, OBJID_CLIENT, 0 },
    { EVENT_OBJECT_DEFACTIONCHANGE, winevent_hook|wparam|lparam, OBJID_CLIENT, 0 },
    { WM_SETFOCUS, sent },
    { EVENT_OBJECT_DEFACTIONCHANGE, winevent_hook|wparam|lparam, OBJID_CLIENT, 0 },
    { WM_GETDLGCODE, sent|defwinproc|wparam, 0 },
    { EVENT_OBJECT_DEFACTIONCHANGE, winevent_hook|wparam|lparam, OBJID_CLIENT, 0 },
    { WM_NCPAINT, sent|wparam, 1 },
    { EVENT_OBJECT_DEFACTIONCHANGE, winevent_hook|wparam|lparam|optional, OBJID_CLIENT, 0 },
    { WM_GETTEXT, sent|optional|defwinproc },
    { EVENT_OBJECT_DEFACTIONCHANGE, winevent_hook|wparam|lparam|optional, OBJID_CLIENT, 0 },
    { EVENT_OBJECT_DEFACTIONCHANGE, winevent_hook|wparam|lparam|optional, OBJID_CLIENT, 0 },
    { EVENT_OBJECT_DEFACTIONCHANGE, winevent_hook|wparam|lparam|optional, OBJID_CLIENT, 0 },
    { EVENT_OBJECT_DEFACTIONCHANGE, winevent_hook|wparam|lparam|optional, OBJID_CLIENT, 0 },
    { WM_GETTEXT, sent|optional|defwinproc },
    { WM_ERASEBKGND, sent },
    { EVENT_OBJECT_DEFACTIONCHANGE, winevent_hook|wparam|lparam, OBJID_CLIENT, 0 },
    { WM_CTLCOLORDLG, sent|defwinproc },
    { EVENT_OBJECT_DEFACTIONCHANGE, winevent_hook|wparam|lparam, OBJID_CLIENT, 0 },
    { WM_WINDOWPOSCHANGED, sent|wparam, SWP_SHOWWINDOW|SWP_NOSIZE|SWP_NOMOVE|SWP_NOZORDER|SWP_NOCLIENTSIZE|SWP_NOCLIENTMOVE },
    { EVENT_OBJECT_DEFACTIONCHANGE, winevent_hook|wparam|lparam|optional, OBJID_CLIENT, 0 },
    { WM_GETTEXT, sent|optional },
    { EVENT_OBJECT_DEFACTIONCHANGE, winevent_hook|wparam|lparam|optional, OBJID_CLIENT, 0 },
    { EVENT_OBJECT_DEFACTIONCHANGE, winevent_hook|wparam|lparam|optional, OBJID_CLIENT, 0 },
    { EVENT_OBJECT_DEFACTIONCHANGE, winevent_hook|wparam|lparam|optional, OBJID_CLIENT, 0 },
    { EVENT_OBJECT_DEFACTIONCHANGE, winevent_hook|wparam|lparam|optional, OBJID_CLIENT, 0 },
    { WM_GETTEXT, sent|optional },
    { EVENT_OBJECT_DEFACTIONCHANGE, winevent_hook|wparam|lparam|optional, OBJID_CLIENT, 0 },
    { WM_NCCALCSIZE, sent|optional },
    { EVENT_OBJECT_DEFACTIONCHANGE, winevent_hook|wparam|lparam|optional, OBJID_CLIENT, 0 },
    { WM_NCPAINT, sent|optional },
    { EVENT_OBJECT_DEFACTIONCHANGE, winevent_hook|wparam|lparam|optional, OBJID_CLIENT, 0 },
    { WM_GETTEXT, sent|optional|defwinproc },
    { EVENT_OBJECT_DEFACTIONCHANGE, winevent_hook|wparam|lparam|optional, OBJID_CLIENT, 0 },
    { EVENT_OBJECT_DEFACTIONCHANGE, winevent_hook|wparam|lparam|optional, OBJID_CLIENT, 0 },
    { EVENT_OBJECT_DEFACTIONCHANGE, winevent_hook|wparam|lparam|optional, OBJID_CLIENT, 0 },
    { EVENT_OBJECT_DEFACTIONCHANGE, winevent_hook|wparam|lparam|optional, OBJID_CLIENT, 0 },
    { WM_GETTEXT, sent|optional|defwinproc },
    { WM_ERASEBKGND, sent|optional },
    { EVENT_OBJECT_DEFACTIONCHANGE, winevent_hook|wparam|lparam|optional, OBJID_CLIENT, 0 },
    { WM_CTLCOLORDLG, sent|optional|defwinproc },
    { WM_SIZE, sent },
    { EVENT_OBJECT_DEFACTIONCHANGE, winevent_hook|wparam|lparam, OBJID_CLIENT, 0 },
    { WM_MOVE, sent },
    { 0 }
};
/* Calling EndDialog for a custom dialog (32) */
static const struct message WmEndCustomDialogSeq[] = {
    { WM_WINDOWPOSCHANGING, sent|wparam, SWP_HIDEWINDOW|SWP_NOACTIVATE|SWP_NOSIZE|SWP_NOMOVE|SWP_NOZORDER },
    { EVENT_OBJECT_HIDE, winevent_hook|wparam|lparam, 0, 0 },
    { WM_WINDOWPOSCHANGED, sent|wparam, SWP_HIDEWINDOW|SWP_NOACTIVATE|SWP_NOSIZE|SWP_NOMOVE|SWP_NOZORDER|SWP_NOCLIENTSIZE|SWP_NOCLIENTMOVE },
    { WM_GETTEXT, sent|optional },
    { HCBT_ACTIVATE, hook },
    { WM_NCACTIVATE, sent|wparam, 0 },
    { WM_GETTEXT, sent|optional|defwinproc },
    { WM_GETTEXT, sent|optional|defwinproc },
    { WM_ACTIVATE, sent|wparam, 0 },
    { EVENT_SYSTEM_FOREGROUND, winevent_hook|wparam|lparam, 0, 0 },
    { WM_WINDOWPOSCHANGING, sent|wparam|optional, SWP_NOACTIVATE|SWP_NOSIZE|SWP_NOMOVE },
    { HCBT_SETFOCUS, hook },
    { WM_KILLFOCUS, sent },
    { WM_IME_SETCONTEXT, sent|wparam|optional, 0 },
    { WM_IME_SETCONTEXT, sent|parent|wparam|defwinproc|optional, 1 },
    { WM_IME_NOTIFY, sent|optional },
    { EVENT_OBJECT_FOCUS, winevent_hook|wparam|lparam, OBJID_CLIENT, 0 },
    { WM_SETFOCUS, sent|parent|defwinproc },
    { 0 }
};
/* ShowWindow(SW_SHOW) for a custom dialog (initially invisible) */
static const struct message WmShowCustomDialogSeq[] = {
    { EVENT_OBJECT_DEFACTIONCHANGE, winevent_hook|wparam|lparam, OBJID_CLIENT, 0 },
    { WM_SHOWWINDOW, sent|wparam, 1 },
    { EVENT_OBJECT_DEFACTIONCHANGE, winevent_hook|wparam|lparam, OBJID_CLIENT, 0 },
    { WM_WINDOWPOSCHANGING, sent|wparam, SWP_SHOWWINDOW|SWP_NOSIZE|SWP_NOMOVE },
    { EVENT_OBJECT_SHOW, winevent_hook|wparam|lparam, 0, 0 },
    { HCBT_ACTIVATE, hook },
    { EVENT_SYSTEM_FOREGROUND, winevent_hook|wparam|lparam, 0, 0 },

    { EVENT_OBJECT_DEFACTIONCHANGE, winevent_hook|wparam|lparam|optional, OBJID_CLIENT, 0 },
    { WM_QUERYNEWPALETTE, sent|wparam|lparam|optional, 0, 0 },

    { EVENT_OBJECT_DEFACTIONCHANGE, winevent_hook|wparam|lparam|optional, OBJID_CLIENT, 0 },
    { WM_WINDOWPOSCHANGING, sent|wparam, SWP_NOSIZE|SWP_NOMOVE },
    { EVENT_OBJECT_DEFACTIONCHANGE, winevent_hook|wparam|lparam, OBJID_CLIENT, 0 },
    { WM_ACTIVATEAPP, sent|wparam|optional, 1 },
    { EVENT_OBJECT_DEFACTIONCHANGE, winevent_hook|wparam|lparam|optional, OBJID_CLIENT, 0 },
    { WM_NCACTIVATE, sent|wparam, 1 },
    { EVENT_OBJECT_DEFACTIONCHANGE, winevent_hook|wparam|lparam, OBJID_CLIENT, 0 },
    { WM_ACTIVATE, sent|wparam, 1 },

    { WM_KILLFOCUS, sent|parent },
    { WM_IME_SETCONTEXT, sent|parent|wparam|optional, 0 },
    { EVENT_OBJECT_DEFACTIONCHANGE, winevent_hook|wparam|lparam|optional, OBJID_CLIENT, 0 },
    { WM_IME_SETCONTEXT, sent|wparam|optional, 1 },
    { EVENT_OBJECT_DEFACTIONCHANGE, winevent_hook|wparam|lparam|optional, OBJID_CLIENT, 0 },
    { WM_IME_NOTIFY, sent|optional|defwinproc },
    { EVENT_OBJECT_DEFACTIONCHANGE, winevent_hook|wparam|lparam|optional, OBJID_CLIENT, 0 },
    { EVENT_OBJECT_FOCUS, winevent_hook|wparam|lparam, OBJID_CLIENT, 0 },
    { EVENT_OBJECT_DEFACTIONCHANGE, winevent_hook|wparam|lparam, OBJID_CLIENT, 0 },
    { WM_SETFOCUS, sent },
    { EVENT_OBJECT_DEFACTIONCHANGE, winevent_hook|wparam|lparam, OBJID_CLIENT, 0 },
    { WM_GETDLGCODE, sent|defwinproc|wparam, 0 },
    { EVENT_OBJECT_DEFACTIONCHANGE, winevent_hook|wparam|lparam, OBJID_CLIENT, 0 },
    { WM_NCPAINT, sent|wparam, 1 },
    { EVENT_OBJECT_DEFACTIONCHANGE, winevent_hook|wparam|lparam, OBJID_CLIENT, 0 },
    { WM_ERASEBKGND, sent },
    { EVENT_OBJECT_DEFACTIONCHANGE, winevent_hook|wparam|lparam, OBJID_CLIENT, 0 },
    { WM_CTLCOLORDLG, sent|defwinproc },

    { EVENT_OBJECT_DEFACTIONCHANGE, winevent_hook|wparam|lparam, OBJID_CLIENT, 0 },
    { WM_WINDOWPOSCHANGED, sent|wparam, SWP_SHOWWINDOW|SWP_NOSIZE|SWP_NOMOVE|SWP_NOZORDER|SWP_NOCLIENTSIZE|SWP_NOCLIENTMOVE },
    { 0 }
};
/* Creation and destruction of a modal dialog (32) */
static const struct message WmModalDialogSeq[] = {
    { WM_CANCELMODE, sent|parent },
    { HCBT_SETFOCUS, hook },
    { EVENT_OBJECT_FOCUS, winevent_hook|wparam|lparam, OBJID_CLIENT, 0 },
    { WM_KILLFOCUS, sent|parent },
    { WM_IME_SETCONTEXT, sent|parent|wparam|optional, 0 },
    { EVENT_OBJECT_STATECHANGE, winevent_hook|wparam|lparam, 0, 0 },
    { WM_ENABLE, sent|parent|wparam, 0 },
    { HCBT_CREATEWND, hook },
    { EVENT_OBJECT_REORDER, winevent_hook|wparam|lparam, 0, 0 },
    { EVENT_OBJECT_CREATE, winevent_hook|wparam|lparam, 0, 0 },
    { WM_SETFONT, sent },
    { WM_INITDIALOG, sent },
    { WM_CHANGEUISTATE, sent|optional },
    { WM_SHOWWINDOW, sent },
    { HCBT_ACTIVATE, hook },
    { EVENT_SYSTEM_FOREGROUND, winevent_hook|wparam|lparam, 0, 0 },
    { WM_QUERYNEWPALETTE, sent|wparam|lparam|optional, 0, 0 },
    { WM_WINDOWPOSCHANGING, sent|wparam, SWP_NOSIZE|SWP_NOMOVE },
    { WM_NCACTIVATE, sent|wparam, 1 },
    { WM_GETTEXT, sent|optional },
    { WM_ACTIVATE, sent|wparam, 1 },
    { WM_WINDOWPOSCHANGING, sent|wparam, SWP_SHOWWINDOW|SWP_NOSIZE|SWP_NOMOVE|SWP_NOZORDER|SWP_NOACTIVATE },
    { EVENT_OBJECT_SHOW, winevent_hook|wparam|lparam, 0, 0 },
    { WM_NCPAINT, sent },
    { WM_GETTEXT, sent|optional },
    { WM_ERASEBKGND, sent },
    { WM_CTLCOLORDLG, sent },
    { WM_WINDOWPOSCHANGED, sent|wparam, SWP_SHOWWINDOW|SWP_NOSIZE|SWP_NOMOVE|SWP_NOZORDER|SWP_NOACTIVATE|SWP_NOCLIENTSIZE|SWP_NOCLIENTMOVE },
    { WM_GETTEXT, sent|optional },
    { WM_NCCALCSIZE, sent|optional },
    { WM_NCPAINT, sent|optional },
    { WM_GETTEXT, sent|optional },
    { WM_ERASEBKGND, sent|optional },
    { WM_CTLCOLORDLG, sent|optional },
    { WM_PAINT, sent|optional },
    { WM_CTLCOLORBTN, sent },
    { WM_ENTERIDLE, sent|parent|optional },
    { WM_ENTERIDLE, sent|parent|optional },
    { WM_ENTERIDLE, sent|parent|optional },
    { WM_ENTERIDLE, sent|parent|optional },
    { WM_ENTERIDLE, sent|parent|optional },
    { WM_ENTERIDLE, sent|parent|optional },
    { WM_ENTERIDLE, sent|parent|optional },
    { WM_ENTERIDLE, sent|parent|optional },
    { WM_ENTERIDLE, sent|parent|optional },
    { WM_ENTERIDLE, sent|parent|optional },
    { WM_ENTERIDLE, sent|parent|optional },
    { WM_ENTERIDLE, sent|parent|optional },
    { WM_ENTERIDLE, sent|parent|optional },
    { WM_ENTERIDLE, sent|parent|optional },
    { WM_ENTERIDLE, sent|parent|optional },
    { WM_ENTERIDLE, sent|parent|optional },
    { WM_ENTERIDLE, sent|parent|optional },
    { WM_ENTERIDLE, sent|parent|optional },
    { WM_ENTERIDLE, sent|parent|optional },
    { WM_ENTERIDLE, sent|parent|optional },
    { WM_TIMER, sent },
    { EVENT_OBJECT_STATECHANGE, winevent_hook|wparam|lparam, 0, 0 },
    { WM_ENABLE, sent|parent|wparam, 1 },
    { WM_WINDOWPOSCHANGING, sent|wparam, SWP_HIDEWINDOW|SWP_NOSIZE|SWP_NOMOVE|SWP_NOZORDER|SWP_NOACTIVATE },
    { EVENT_OBJECT_HIDE, winevent_hook|wparam|lparam, 0, 0 },
    { WM_WINDOWPOSCHANGED, sent|wparam, SWP_HIDEWINDOW|SWP_NOSIZE|SWP_NOMOVE|SWP_NOZORDER|SWP_NOACTIVATE|SWP_NOCLIENTSIZE|SWP_NOCLIENTMOVE },
    { WM_GETTEXT, sent|optional },
    { HCBT_ACTIVATE, hook },
    { WM_NCACTIVATE, sent|wparam, 0 },
    { WM_GETTEXT, sent|optional },
    { WM_ACTIVATE, sent|wparam, 0 },
    { EVENT_SYSTEM_FOREGROUND, winevent_hook|wparam|lparam, 0, 0 },
    { WM_WINDOWPOSCHANGING, sent|optional },
    { HCBT_SETFOCUS, hook },
    { WM_IME_SETCONTEXT, sent|parent|wparam|defwinproc|optional, 1 },
    { EVENT_OBJECT_FOCUS, winevent_hook|wparam|lparam, OBJID_CLIENT, 0 },
    { WM_SETFOCUS, sent|parent|defwinproc },
    { EVENT_SYSTEM_DIALOGEND, winevent_hook|wparam|lparam, 0, 0 },
    { HCBT_DESTROYWND, hook },
    { EVENT_OBJECT_DESTROY, winevent_hook|wparam|lparam, 0, 0 },
    { WM_DESTROY, sent },
    { WM_NCDESTROY, sent },
    { 0 }
};
/* Creation of a modal dialog that is resized inside WM_INITDIALOG (32) */
static const struct message WmCreateModalDialogResizeSeq[] = { /* FIXME: add */
    /* (inside dialog proc, handling WM_INITDIALOG) */
    { WM_WINDOWPOSCHANGING, sent|wparam, 0 },
    { WM_NCCALCSIZE, sent },
    { WM_NCACTIVATE, sent|parent|wparam, 0 },
    { WM_GETTEXT, sent|defwinproc },
    { WM_ACTIVATE, sent|parent|wparam, 0 },
    { WM_WINDOWPOSCHANGING, sent|wparam, 0 },
    { WM_WINDOWPOSCHANGING, sent|parent },
    { WM_NCACTIVATE, sent|wparam, 1 },
    { WM_ACTIVATE, sent|wparam, 1 },
    { WM_WINDOWPOSCHANGED, sent|wparam, 0 },
    { WM_SIZE, sent|defwinproc },
    /* (setting focus) */
    { WM_SHOWWINDOW, sent|wparam, 1 },
    { WM_WINDOWPOSCHANGING, sent|wparam, 0 },
    { WM_NCPAINT, sent },
    { WM_GETTEXT, sent|defwinproc },
    { WM_ERASEBKGND, sent },
    { WM_CTLCOLORDLG, sent|defwinproc },
    { WM_WINDOWPOSCHANGED, sent|wparam, 0 },
    { WM_PAINT, sent },
    /* (bunch of WM_CTLCOLOR* for each control) */
    { WM_PAINT, sent|parent },
    { WM_ENTERIDLE, sent|parent|wparam, 0 },
    { WM_SETCURSOR, sent|parent },
    { 0 }
};
/* SetMenu for NonVisible windows with size change*/
static const struct message WmSetMenuNonVisibleSizeChangeSeq[] = {
    { WM_WINDOWPOSCHANGING, sent|wparam, SWP_FRAMECHANGED|SWP_NOACTIVATE|SWP_NOSIZE|SWP_NOMOVE|SWP_NOZORDER },
    { WM_NCCALCSIZE, sent|wparam, 1 },
    { EVENT_OBJECT_REORDER, winevent_hook|wparam|lparam, 0, 0 },
    { WM_WINDOWPOSCHANGED, sent|wparam, SWP_FRAMECHANGED|SWP_NOACTIVATE|SWP_NOSIZE|SWP_NOMOVE|SWP_NOZORDER|SWP_NOREDRAW },
    { WM_MOVE, sent|defwinproc },
    { WM_SIZE, sent|defwinproc },
    { EVENT_OBJECT_LOCATIONCHANGE, winevent_hook|wparam|lparam, 0, 0 },
    { WM_GETTEXT, sent|optional },
    { WM_NCCALCSIZE, sent|wparam|optional, 1 },
    { 0 }
};
/* SetMenu for NonVisible windows with no size change */
static const struct message WmSetMenuNonVisibleNoSizeChangeSeq[] = {
    { WM_WINDOWPOSCHANGING, sent|wparam, SWP_FRAMECHANGED|SWP_NOACTIVATE|SWP_NOSIZE|SWP_NOMOVE|SWP_NOZORDER },
    { WM_NCCALCSIZE, sent|wparam, 1 },
    { WM_WINDOWPOSCHANGED, sent|wparam, SWP_FRAMECHANGED|SWP_NOACTIVATE|SWP_NOSIZE|SWP_NOMOVE|SWP_NOZORDER|SWP_NOREDRAW|SWP_NOCLIENTSIZE|SWP_NOCLIENTMOVE },
    { EVENT_OBJECT_LOCATIONCHANGE, winevent_hook|wparam|lparam, 0, 0 },
    { 0 }
};
/* SetMenu for Visible windows with size change */
static const struct message WmSetMenuVisibleSizeChangeSeq[] = {
    { WM_WINDOWPOSCHANGING, sent|wparam, SWP_FRAMECHANGED|SWP_NOACTIVATE|SWP_NOSIZE|SWP_NOMOVE|SWP_NOZORDER },
    { WM_NCCALCSIZE, sent|wparam, 1 },
    { EVENT_OBJECT_REORDER, winevent_hook|wparam|lparam, 0, 0 },
    { WM_NCPAINT, sent }, /* wparam != 1 */
    { WM_GETTEXT, sent|defwinproc|optional },
    { WM_ERASEBKGND, sent|optional },
    { WM_ACTIVATE, sent|optional },
    { WM_WINDOWPOSCHANGED, sent|wparam, SWP_FRAMECHANGED|SWP_NOACTIVATE|SWP_NOSIZE|SWP_NOMOVE|SWP_NOZORDER },
    { WM_MOVE, sent|defwinproc },
    { WM_SIZE, sent|defwinproc },
    { EVENT_OBJECT_LOCATIONCHANGE, winevent_hook|wparam|lparam, 0, 0 },
    { WM_NCCALCSIZE, sent|wparam|optional, 1 },
    { WM_NCPAINT, sent|optional }, /* wparam != 1 */
    { WM_ERASEBKGND, sent|optional },
    { 0 }
};
/* SetMenu for Visible windows with no size change */
static const struct message WmSetMenuVisibleNoSizeChangeSeq[] = {
    { WM_WINDOWPOSCHANGING, sent|wparam, SWP_FRAMECHANGED|SWP_NOACTIVATE|SWP_NOSIZE|SWP_NOMOVE|SWP_NOZORDER },
    { WM_NCCALCSIZE, sent|wparam, 1 },
    { WM_NCPAINT, sent }, /* wparam != 1 */
    { WM_GETTEXT, sent|defwinproc|optional },
    { WM_ERASEBKGND, sent|optional },
    { WM_ACTIVATE, sent|optional },
    { WM_WINDOWPOSCHANGED, sent|wparam, SWP_FRAMECHANGED|SWP_NOACTIVATE|SWP_NOSIZE|SWP_NOMOVE|SWP_NOZORDER|SWP_NOCLIENTSIZE|SWP_NOCLIENTMOVE },
    { EVENT_OBJECT_LOCATIONCHANGE, winevent_hook|wparam|lparam, 0, 0 },
    { 0 }
};
/* DrawMenuBar for a visible window */
static const struct message WmDrawMenuBarSeq[] =
{
    { WM_WINDOWPOSCHANGING, sent|wparam, SWP_FRAMECHANGED|SWP_NOACTIVATE|SWP_NOSIZE|SWP_NOMOVE|SWP_NOZORDER },
    { WM_NCCALCSIZE, sent|wparam, 1 },
    { WM_NCPAINT, sent }, /* wparam != 1 */
    { WM_GETTEXT, sent|defwinproc|optional },
    { WM_ERASEBKGND, sent|optional },
    { WM_WINDOWPOSCHANGED, sent|wparam, SWP_FRAMECHANGED|SWP_NOACTIVATE|SWP_NOSIZE|SWP_NOMOVE|SWP_NOZORDER|SWP_NOCLIENTSIZE|SWP_NOCLIENTMOVE },
    { EVENT_OBJECT_LOCATIONCHANGE, winevent_hook|wparam|lparam, 0, 0 },
    { 0 }
};

static const struct message WmSetRedrawFalseSeq[] =
{
    { WM_SETREDRAW, sent|wparam, 0 },
    { 0 }
};

static const struct message WmSetRedrawTrueSeq[] =
{
    { WM_SETREDRAW, sent|wparam, 1 },
    { 0 }
};

static const struct message WmEnableWindowSeq_1[] =
{
    { WM_CANCELMODE, sent|wparam|lparam, 0, 0 },
    { EVENT_OBJECT_STATECHANGE, winevent_hook|wparam|lparam, 0, 0 },
    { WM_ENABLE, sent|wparam|lparam, FALSE, 0 },
    { 0 }
};

static const struct message WmEnableWindowSeq_2[] =
{
    { EVENT_OBJECT_STATECHANGE, winevent_hook|wparam|lparam, 0, 0 },
    { WM_ENABLE, sent|wparam|lparam, TRUE, 0 },
    { 0 }
};

static const struct message WmGetScrollRangeSeq[] =
{
    { SBM_GETRANGE, sent },
    { 0 }
};
static const struct message WmGetScrollInfoSeq[] =
{
    { SBM_GETSCROLLINFO, sent },
    { 0 }
};
static const struct message WmSetScrollRangeSeq[] =
{
    /* MSDN claims that Windows sends SBM_SETRANGE message, but win2k SP4
       sends SBM_SETSCROLLINFO.
     */
    { SBM_SETSCROLLINFO, sent },
    { 0 }
};
/* SetScrollRange for a window without a non-client area */
static const struct message WmSetScrollRangeHSeq_empty[] =
{
    { EVENT_OBJECT_VALUECHANGE, winevent_hook|wparam|lparam, OBJID_HSCROLL, 0 },
    { 0 }
};
static const struct message WmSetScrollRangeVSeq_empty[] =
{
    { EVENT_OBJECT_VALUECHANGE, winevent_hook|wparam|lparam, OBJID_VSCROLL, 0 },
    { 0 }
};
static const struct message WmSetScrollRangeHVSeq[] =
{
    { WM_WINDOWPOSCHANGING, sent|wparam, SWP_FRAMECHANGED|SWP_NOACTIVATE|SWP_NOMOVE|SWP_NOSIZE|SWP_NOZORDER },
    { WM_NCCALCSIZE, sent|wparam, 1 },
    { WM_GETTEXT, sent|defwinproc|optional },
    { WM_ERASEBKGND, sent|optional },
    { WM_WINDOWPOSCHANGED, sent|wparam, SWP_FRAMECHANGED|SWP_NOACTIVATE|SWP_NOMOVE|SWP_NOSIZE|SWP_NOZORDER|SWP_NOCLIENTSIZE|SWP_NOCLIENTMOVE },
    { EVENT_OBJECT_LOCATIONCHANGE, winevent_hook|wparam|lparam, 0, 0 },
    { 0 }
};
/* SetScrollRange for a window with a non-client area */
static const struct message WmSetScrollRangeHV_NC_Seq[] =
{
    { WM_WINDOWPOSCHANGING, sent, /*|wparam, SWP_FRAMECHANGED|SWP_NOACTIVATE|SWP_NOMOVE|SWP_NOSIZE|SWP_NOZORDER*/ },
    { WM_NCCALCSIZE, sent|wparam, 1 },
    { EVENT_OBJECT_REORDER, winevent_hook|wparam|lparam, 0, 0 },
    { WM_NCPAINT, sent|optional },
    { WM_GETTEXT, sent|defwinproc|optional },
    { WM_GETTEXT, sent|defwinproc|optional },
    { WM_ERASEBKGND, sent|optional },
    { WM_CTLCOLORDLG, sent|defwinproc|optional }, /* sent to a parent of the dialog */
    { WM_WINDOWPOSCHANGED, sent, /*|wparam, SWP_FRAMECHANGED|SWP_NOACTIVATE|SWP_NOMOVE|SWP_NOSIZE|SWP_NOZORDER|0x1000*/ },
    { WM_SIZE, sent|defwinproc },
    { EVENT_OBJECT_LOCATIONCHANGE, winevent_hook|wparam|lparam, 0, 0 },
    { WM_GETTEXT, sent|optional },
    { WM_GETTEXT, sent|optional },
    { WM_GETTEXT, sent|optional },
    { WM_GETTEXT, sent|optional },
    { 0 }
};
/* test if we receive the right sequence of messages */
/* after calling ShowWindow( SW_SHOWNA) */
static const struct message WmSHOWNAChildInvisParInvis[] = {
    { WM_SHOWWINDOW, sent|wparam, 1 },
    { 0 }
};
static const struct message WmSHOWNAChildVisParInvis[] = {
    { WM_SHOWWINDOW, sent|wparam, 1 },
    { 0 }
};
static const struct message WmSHOWNAChildVisParVis[] = {
    { WM_SHOWWINDOW, sent|wparam, 1 },
    { WM_WINDOWPOSCHANGING, sent|wparam, SWP_SHOWWINDOW|SWP_NOSIZE|SWP_NOMOVE|SWP_NOACTIVATE|SWP_NOZORDER },
    { 0 }
};
static const struct message WmSHOWNAChildInvisParVis[] = {
    { WM_SHOWWINDOW, sent|wparam, 1 },
    { WM_WINDOWPOSCHANGING, sent|wparam, SWP_SHOWWINDOW|SWP_NOACTIVATE|SWP_NOSIZE|SWP_NOMOVE|SWP_NOZORDER},
    { EVENT_OBJECT_SHOW, winevent_hook|wparam|lparam, 0, 0 },
    { WM_ERASEBKGND, sent|optional },
    { WM_WINDOWPOSCHANGED, sent|wparam, SWP_SHOWWINDOW|SWP_NOSIZE|SWP_NOMOVE|SWP_NOCLIENTSIZE|SWP_NOACTIVATE|SWP_NOZORDER|SWP_NOCLIENTMOVE },
    { 0 }
};
static const struct message WmSHOWNATopVisible[] = {
    { WM_SHOWWINDOW, sent|wparam, 1 },
    { WM_WINDOWPOSCHANGING, sent|wparam, SWP_SHOWWINDOW|SWP_NOSIZE|SWP_NOMOVE|SWP_NOACTIVATE },
    { 0 }
};
static const struct message WmSHOWNATopInvisible[] = {
    { WM_SHOWWINDOW, sent|wparam, 1 },
    { WM_WINDOWPOSCHANGING, sent|wparam, SWP_SHOWWINDOW|SWP_NOACTIVATE|SWP_NOSIZE|SWP_NOMOVE },
    { EVENT_OBJECT_SHOW, winevent_hook|wparam|lparam, 0, 0 },
    { WM_NCPAINT, sent|wparam, 1 },
    { WM_GETTEXT, sent|defwinproc|optional },
    { WM_ERASEBKGND, sent|optional },
    { WM_WINDOWPOSCHANGED, sent|wparam, SWP_SHOWWINDOW|SWP_NOACTIVATE|SWP_NOZORDER|SWP_NOSIZE|SWP_NOMOVE|SWP_NOCLIENTSIZE|SWP_NOCLIENTMOVE },
    { WM_NCCALCSIZE, sent|wparam|optional, 1 },
    { WM_NCPAINT, sent|wparam|optional, 1 },
    { WM_ERASEBKGND, sent|optional },
    { WM_SIZE, sent },
    { WM_MOVE, sent },
    { 0 }
};

static int after_end_dialog;
static int sequence_cnt, sequence_size;
static struct message* sequence;
static int log_all_parent_messages;

static void add_message(const struct message *msg)
{
    if (!sequence) 
    {
	sequence_size = 10;
	sequence = HeapAlloc( GetProcessHeap(), 0, sequence_size * sizeof (struct message) );
    }
    if (sequence_cnt == sequence_size) 
    {
	sequence_size *= 2;
	sequence = HeapReAlloc( GetProcessHeap(), 0, sequence, sequence_size * sizeof (struct message) );
    }
    assert(sequence);

    sequence[sequence_cnt].message = msg->message;
    sequence[sequence_cnt].flags = msg->flags;
    sequence[sequence_cnt].wParam = msg->wParam;
    sequence[sequence_cnt].lParam = msg->lParam;

    sequence_cnt++;
}

static void flush_sequence(void)
{
    HeapFree(GetProcessHeap(), 0, sequence);
    sequence = 0;
    sequence_cnt = sequence_size = 0;
}

#define ok_sequence( exp, contx, todo) \
        ok_sequence_( (exp), (contx), (todo), __FILE__, __LINE__)


static void ok_sequence_(const struct message *expected, const char *context, int todo,
        const char *file, int line)
{
    static const struct message end_of_sequence = { 0, 0, 0, 0 };
    const struct message *actual;
    int failcount = 0;
    
    add_message(&end_of_sequence);

    actual = sequence;

    while (expected->message && actual->message)
    {
	trace_( file, line)("expected %04x - actual %04x\n", expected->message, actual->message);

	if (expected->message == actual->message)
	{
	    if (expected->flags & wparam)
	    {
		if (expected->wParam != actual->wParam && todo)
		{
		    todo_wine {
                        failcount ++;
                        ok_( file, line) (FALSE,
			    "%s: in msg 0x%04x expecting wParam 0x%x got 0x%x\n",
			    context, expected->message, expected->wParam, actual->wParam);
		    }
		}
		else
		ok_( file, line) (expected->wParam == actual->wParam,
		     "%s: in msg 0x%04x expecting wParam 0x%x got 0x%x\n",
		     context, expected->message, expected->wParam, actual->wParam);
	    }
	    if (expected->flags & lparam)
		 ok_( file, line) (expected->lParam == actual->lParam,
		     "%s: in msg 0x%04x expecting lParam 0x%lx got 0x%lx\n",
		     context, expected->message, expected->lParam, actual->lParam);
	    ok_( file, line) ((expected->flags & defwinproc) == (actual->flags & defwinproc),
		"%s: the msg 0x%04x should %shave been sent by DefWindowProc\n",
		context, expected->message, (expected->flags & defwinproc) ? "" : "NOT ");
	    ok_( file, line) ((expected->flags & beginpaint) == (actual->flags & beginpaint),
		"%s: the msg 0x%04x should %shave been sent by BeginPaint\n",
		context, expected->message, (expected->flags & beginpaint) ? "" : "NOT ");
	    ok_( file, line) ((expected->flags & (sent|posted)) == (actual->flags & (sent|posted)),
		"%s: the msg 0x%04x should have been %s\n",
		context, expected->message, (expected->flags & posted) ? "posted" : "sent");
	    ok_( file, line) ((expected->flags & parent) == (actual->flags & parent),
		"%s: the msg 0x%04x was expected in %s\n",
		context, expected->message, (expected->flags & parent) ? "parent" : "child");
	    ok_( file, line) ((expected->flags & hook) == (actual->flags & hook),
		"%s: the msg 0x%04x should have been sent by a hook\n",
		context, expected->message);
	    ok_( file, line) ((expected->flags & winevent_hook) == (actual->flags & winevent_hook),
		"%s: the msg 0x%04x should have been sent by a winevent hook\n",
		context, expected->message);
	    expected++;
	    actual++;
	}
	/* silently drop winevent messages if there is no support for them */
	else if ((expected->flags & optional) || ((expected->flags & winevent_hook) && !hEvent_hook))
	    expected++;
	else if (todo)
	{
            failcount++;
            todo_wine {
                ok_( file, line) (FALSE, "%s: the msg 0x%04x was expected, but got msg 0x%04x instead\n",
                    context, expected->message, actual->message);
            }
            flush_sequence();
            return;
        }
        else
        {
            ok_( file, line) (FALSE, "%s: the msg 0x%04x was expected, but got msg 0x%04x instead\n",
                context, expected->message, actual->message);
            expected++;
            actual++;
        }
    }

    /* skip all optional trailing messages */
    while (expected->message && ((expected->flags & optional) ||
	    ((expected->flags & winevent_hook) && !hEvent_hook)))
	expected++;

    if (todo)
    {
        todo_wine {
            if (expected->message || actual->message) {
                failcount++;
                ok_( file, line) (FALSE, "%s: the msg sequence is not complete: expected %04x - actual %04x\n",
                    context, expected->message, actual->message);
            }
        }
    }
    else
    {
        if (expected->message || actual->message)
            ok_( file, line) (FALSE, "%s: the msg sequence is not complete: expected %04x - actual %04x\n",
                context, expected->message, actual->message);
    }
    if( todo && !failcount) /* succeeded yet marked todo */
        todo_wine {
            ok_( file, line)( TRUE, "%s: marked \"todo_wine\" but succeeds\n", context);
        }

    flush_sequence();
}

/******************************** MDI test **********************************/

/* CreateWindow for MDI frame window, initially visible */
static const struct message WmCreateMDIframeSeq[] = {
    { HCBT_CREATEWND, hook },
    { WM_GETMINMAXINFO, sent },
    { WM_NCCREATE, sent },
    { WM_NCCALCSIZE, sent|wparam, 0 },
    { EVENT_OBJECT_REORDER, winevent_hook|wparam|lparam, 0, 0 },
    { WM_CREATE, sent },
    { EVENT_OBJECT_CREATE, winevent_hook|wparam|lparam, 0, 0 },
    { WM_SHOWWINDOW, sent|wparam, 1 },
    { WM_WINDOWPOSCHANGING, sent|wparam, SWP_SHOWWINDOW|SWP_NOSIZE|SWP_NOMOVE },
    { EVENT_OBJECT_SHOW, winevent_hook|wparam|lparam, 0, 0 },
    { HCBT_ACTIVATE, hook },
    { EVENT_SYSTEM_FOREGROUND, winevent_hook|wparam|lparam, 0, 0 },
    { WM_QUERYNEWPALETTE, sent|wparam|lparam|optional, 0, 0 },
    { WM_WINDOWPOSCHANGING, sent|wparam, SWP_NOSIZE|SWP_NOMOVE },
    { WM_WINDOWPOSCHANGED, sent|wparam|optional, SWP_NOSIZE|SWP_NOMOVE|SWP_NOCLIENTSIZE|SWP_NOCLIENTMOVE }, /* Win9x */
    { WM_ACTIVATEAPP, sent|wparam, 1 },
    { WM_NCACTIVATE, sent|wparam, 1 },
    { WM_GETTEXT, sent|defwinproc|optional },
    { WM_ACTIVATE, sent|wparam, 1 },
    { HCBT_SETFOCUS, hook },
    { WM_IME_SETCONTEXT, sent|wparam|defwinproc|optional, 1 },
    { EVENT_OBJECT_FOCUS, winevent_hook|wparam|lparam, OBJID_CLIENT, 0 },
    { WM_SETFOCUS, sent|wparam|defwinproc, 0 },
    /* Win9x adds SWP_NOZORDER below */
    { WM_WINDOWPOSCHANGED, sent, /*|wparam, SWP_SHOWWINDOW|SWP_NOSIZE|SWP_NOMOVE|SWP_NOCLIENTSIZE|SWP_NOCLIENTMOVE*/ },
    { WM_SIZE, sent },
    { WM_MOVE, sent },
    { 0 }
};
/* DestroyWindow for MDI frame window, initially visible */
static const struct message WmDestroyMDIframeSeq[] = {
    { HCBT_DESTROYWND, hook },
    { WM_WINDOWPOSCHANGING, sent|wparam, SWP_HIDEWINDOW|SWP_NOACTIVATE|SWP_NOSIZE|SWP_NOMOVE|SWP_NOZORDER },
    { EVENT_OBJECT_HIDE, winevent_hook|wparam|lparam, 0, 0 },
    { WM_WINDOWPOSCHANGED, sent|wparam, SWP_HIDEWINDOW|SWP_NOACTIVATE|SWP_NOSIZE|SWP_NOMOVE|SWP_NOZORDER|SWP_NOCLIENTSIZE|SWP_NOCLIENTMOVE },
    { WM_NCACTIVATE, sent|wparam, 0 },
    { WM_ACTIVATE, sent|wparam|optional, 0 }, /* Win9x */
    { WM_ACTIVATEAPP, sent|wparam|optional, 0 }, /* Win9x */
    { EVENT_OBJECT_HIDE, winevent_hook|wparam|lparam, OBJID_CARET, 0 },
    { EVENT_OBJECT_DESTROY, winevent_hook|wparam|lparam, 0, 0 },
    { WM_DESTROY, sent },
    { WM_NCDESTROY, sent },
    { 0 }
};
/* CreateWindow for MDI client window, initially visible */
static const struct message WmCreateMDIclientSeq[] = {
    { HCBT_CREATEWND, hook },
    { WM_NCCREATE, sent },
    { WM_NCCALCSIZE, sent|wparam, 0 },
    { WM_CREATE, sent },
    { EVENT_OBJECT_CREATE, winevent_hook|wparam|lparam, 0, 0 },
    { WM_SIZE, sent },
    { WM_MOVE, sent },
    { WM_PARENTNOTIFY, sent|wparam, WM_CREATE }, /* in MDI frame */
    { WM_SHOWWINDOW, sent|wparam, 1 },
    { WM_WINDOWPOSCHANGING, sent|wparam, SWP_SHOWWINDOW|SWP_NOACTIVATE|SWP_NOZORDER|SWP_NOSIZE|SWP_NOMOVE },
    { EVENT_OBJECT_SHOW, winevent_hook|wparam|lparam, 0, 0 },
    { WM_WINDOWPOSCHANGED, sent|wparam, SWP_SHOWWINDOW|SWP_NOACTIVATE|SWP_NOZORDER|SWP_NOSIZE|SWP_NOMOVE|SWP_NOCLIENTSIZE|SWP_NOCLIENTMOVE },
    { 0 }
};
/* DestroyWindow for MDI client window, initially visible */
static const struct message WmDestroyMDIclientSeq[] = {
    { HCBT_DESTROYWND, hook },
    { WM_PARENTNOTIFY, sent|wparam, WM_DESTROY }, /* in MDI frame */
    { WM_SHOWWINDOW, sent|wparam, 0 },
    { WM_WINDOWPOSCHANGING, sent|wparam, SWP_HIDEWINDOW|SWP_NOACTIVATE|SWP_NOSIZE|SWP_NOMOVE|SWP_NOZORDER },
    { EVENT_OBJECT_HIDE, winevent_hook|wparam|lparam, 0, 0 },
    { WM_WINDOWPOSCHANGED, sent|wparam, SWP_HIDEWINDOW|SWP_NOACTIVATE|SWP_NOSIZE|SWP_NOMOVE|SWP_NOZORDER|SWP_NOCLIENTSIZE|SWP_NOCLIENTMOVE },
    { EVENT_OBJECT_DESTROY, winevent_hook|wparam|lparam, 0, 0 },
    { WM_DESTROY, sent },
    { WM_NCDESTROY, sent },
    { 0 }
};
/* CreateWindow for MDI child window, initially visible */
static const struct message WmCreateMDIchildVisibleSeq[] = {
    { HCBT_CREATEWND, hook },
    { WM_NCCREATE, sent }, 
    { WM_NCCALCSIZE, sent|wparam, 0 },
    { WM_CREATE, sent },
    { EVENT_OBJECT_CREATE, winevent_hook|wparam|lparam, 0, 0 },
    { WM_SIZE, sent },
    { WM_MOVE, sent },
    /* Win2k sends wparam set to
     * MAKEWPARAM(WM_CREATE, MDI_FIRST_CHILD_ID + nTotalCreated),
     * while Win9x doesn't bother to set child window id according to
     * CLIENTCREATESTRUCT.idFirstChild
     */
    { WM_PARENTNOTIFY, sent /*|wparam, WM_CREATE*/ }, /* in MDI client */
    { WM_SHOWWINDOW, sent|wparam, 1 },
    { WM_WINDOWPOSCHANGING, sent|wparam, SWP_SHOWWINDOW|SWP_NOACTIVATE|SWP_NOSIZE|SWP_NOMOVE|SWP_NOZORDER },
    { EVENT_OBJECT_SHOW, winevent_hook|wparam|lparam, 0, 0 },
    { WM_WINDOWPOSCHANGED, sent|wparam, SWP_SHOWWINDOW|SWP_NOACTIVATE|SWP_NOSIZE|SWP_NOMOVE|SWP_NOZORDER|SWP_NOCLIENTSIZE|SWP_NOCLIENTMOVE },
    { WM_MDIREFRESHMENU, sent/*|wparam|lparam, 0, 0*/ },
    { WM_WINDOWPOSCHANGING, sent|wparam, SWP_SHOWWINDOW|SWP_NOSIZE|SWP_NOMOVE },
    { WM_CHILDACTIVATE, sent|wparam|lparam, 0, 0 },
    { WM_WINDOWPOSCHANGING, sent|wparam|defwinproc, SWP_NOACTIVATE|SWP_NOSIZE|SWP_NOMOVE },

    /* Win9x: message sequence terminates here. */

    { WM_NCACTIVATE, sent|wparam|defwinproc, 1 },
    { HCBT_SETFOCUS, hook }, /* in MDI client */
    { WM_IME_SETCONTEXT, sent|wparam|optional, 1 }, /* in MDI client */
    { EVENT_OBJECT_FOCUS, winevent_hook|wparam|lparam, OBJID_CLIENT, 0 },
    { WM_SETFOCUS, sent }, /* in MDI client */
    { HCBT_SETFOCUS, hook },
    { WM_KILLFOCUS, sent }, /* in MDI client */
    { WM_IME_SETCONTEXT, sent|wparam|optional, 0 }, /* in MDI client */
    { WM_IME_SETCONTEXT, sent|wparam|defwinproc|optional, 1 },
    { EVENT_OBJECT_FOCUS, winevent_hook|wparam|lparam, OBJID_CLIENT, 0 },
    { WM_SETFOCUS, sent|defwinproc },
    { WM_MDIACTIVATE, sent|defwinproc },
    { 0 }
};
/* DestroyWindow for MDI child window, initially visible */
static const struct message WmDestroyMDIchildVisibleSeq[] = {
    { HCBT_DESTROYWND, hook },
    /* Win2k sends wparam set to
     * MAKEWPARAM(WM_DESTROY, MDI_FIRST_CHILD_ID + nTotalCreated),
     * while Win9x doesn't bother to set child window id according to
     * CLIENTCREATESTRUCT.idFirstChild
     */
    { WM_PARENTNOTIFY, sent /*|wparam, WM_DESTROY*/ }, /* in MDI client */
    { WM_SHOWWINDOW, sent|wparam, 0 },
    { WM_WINDOWPOSCHANGING, sent|wparam, SWP_HIDEWINDOW|SWP_NOACTIVATE|SWP_NOSIZE|SWP_NOMOVE|SWP_NOZORDER },
    { EVENT_OBJECT_HIDE, winevent_hook|wparam|lparam, 0, 0 },
    { WM_ERASEBKGND, sent|parent|optional },
    { WM_WINDOWPOSCHANGED, sent|wparam, SWP_HIDEWINDOW|SWP_NOACTIVATE|SWP_NOSIZE|SWP_NOMOVE|SWP_NOZORDER|SWP_NOCLIENTSIZE|SWP_NOCLIENTMOVE },

    /* { WM_DESTROY, sent }
     * Win9x: message sequence terminates here.
     */

    { HCBT_SETFOCUS, hook }, /* set focus to MDI client */
    { WM_KILLFOCUS, sent },
    { WM_IME_SETCONTEXT, sent|wparam|optional, 0 },
    { WM_IME_SETCONTEXT, sent|wparam|optional, 1 }, /* in MDI client */
    { EVENT_OBJECT_FOCUS, winevent_hook|wparam|lparam, OBJID_CLIENT, 0 },
    { WM_SETFOCUS, sent }, /* in MDI client */

    { HCBT_SETFOCUS, hook }, /* MDI client sets focus back to MDI child */
    { WM_KILLFOCUS, sent }, /* in MDI client */
    { WM_IME_SETCONTEXT, sent|wparam|optional, 0 }, /* in MDI client */
    { WM_IME_SETCONTEXT, sent|wparam|optional, 1 },
    { EVENT_OBJECT_FOCUS, winevent_hook|wparam|lparam, OBJID_CLIENT, 0 },
    { WM_SETFOCUS, sent }, /* in MDI client */

    { EVENT_OBJECT_DESTROY, winevent_hook|wparam|lparam, 0, 0 },

    { HCBT_SETFOCUS, hook }, /* set focus to MDI client */
    { WM_KILLFOCUS, sent },
    { WM_IME_SETCONTEXT, sent|wparam|optional, 0 },
    { WM_IME_SETCONTEXT, sent|wparam|optional, 1 }, /* in MDI client */
    { EVENT_OBJECT_FOCUS, winevent_hook|wparam|lparam, OBJID_CLIENT, 0 },
    { WM_SETFOCUS, sent }, /* in MDI client */

    { HCBT_SETFOCUS, hook }, /* MDI client sets focus back to MDI child */
    { WM_KILLFOCUS, sent }, /* in MDI client */
    { WM_IME_SETCONTEXT, sent|wparam|optional, 0 }, /* in MDI client */
    { WM_IME_SETCONTEXT, sent|wparam|optional, 1 },
    { EVENT_OBJECT_FOCUS, winevent_hook|wparam|lparam, OBJID_CLIENT, 0 },
    { WM_SETFOCUS, sent }, /* in MDI client */

    { WM_DESTROY, sent },

    { HCBT_SETFOCUS, hook }, /* set focus to MDI client */
    { WM_KILLFOCUS, sent },
    { WM_IME_SETCONTEXT, sent|wparam|optional, 0 },
    { WM_IME_SETCONTEXT, sent|wparam|optional, 1 }, /* in MDI client */
    { EVENT_OBJECT_FOCUS, winevent_hook|wparam|lparam, OBJID_CLIENT, 0 },
    { WM_SETFOCUS, sent }, /* in MDI client */

    { HCBT_SETFOCUS, hook }, /* MDI client sets focus back to MDI child */
    { WM_KILLFOCUS, sent }, /* in MDI client */
    { WM_IME_SETCONTEXT, sent|wparam|optional, 0 }, /* in MDI client */
    { WM_IME_SETCONTEXT, sent|wparam|optional, 1 },
    { EVENT_OBJECT_FOCUS, winevent_hook|wparam|lparam, OBJID_CLIENT, 0 },
    { WM_SETFOCUS, sent }, /* in MDI client */

    { WM_NCDESTROY, sent },
    { 0 }
};
/* CreateWindow for MDI child window, initially invisible */
static const struct message WmCreateMDIchildInvisibleSeq[] = {
    { HCBT_CREATEWND, hook },
    { WM_NCCREATE, sent }, 
    { WM_NCCALCSIZE, sent|wparam, 0 },
    { WM_CREATE, sent },
    { EVENT_OBJECT_CREATE, winevent_hook|wparam|lparam, 0, 0 },
    { WM_SIZE, sent },
    { WM_MOVE, sent },
    /* Win2k sends wparam set to
     * MAKEWPARAM(WM_CREATE, MDI_FIRST_CHILD_ID + nTotalCreated),
     * while Win9x doesn't bother to set child window id according to
     * CLIENTCREATESTRUCT.idFirstChild
     */
    { WM_PARENTNOTIFY, sent /*|wparam, WM_CREATE*/ }, /* in MDI client */
    { 0 }
};
/* DestroyWindow for MDI child window, initially invisible */
static const struct message WmDestroyMDIchildInvisibleSeq[] = {
    { HCBT_DESTROYWND, hook },
    /* Win2k sends wparam set to
     * MAKEWPARAM(WM_DESTROY, MDI_FIRST_CHILD_ID + nTotalCreated),
     * while Win9x doesn't bother to set child window id according to
     * CLIENTCREATESTRUCT.idFirstChild
     */
    { WM_PARENTNOTIFY, sent /*|wparam, WM_DESTROY*/ }, /* in MDI client */
    { EVENT_OBJECT_DESTROY, winevent_hook|wparam|lparam, 0, 0 },
    { WM_DESTROY, sent },
    { WM_NCDESTROY, sent },
    { 0 }
};
/* CreateWindow for the 1st MDI child window, initially visible and maximized */
static const struct message WmCreateMDIchildVisibleMaxSeq1[] = {
    { HCBT_CREATEWND, hook },
    { WM_NCCREATE, sent }, 
    { WM_NCCALCSIZE, sent|wparam, 0 },
    { WM_CREATE, sent },
    { EVENT_OBJECT_CREATE, winevent_hook|wparam|lparam, 0, 0 },
    { WM_SIZE, sent },
    { WM_MOVE, sent },
    { HCBT_MINMAX, hook|lparam, 0, SW_MAXIMIZE },
    { WM_GETMINMAXINFO, sent },
    { WM_WINDOWPOSCHANGING, sent|wparam, SWP_FRAMECHANGED|SWP_NOACTIVATE|0x8000 },
    { WM_NCCALCSIZE, sent|wparam, 1 },
    { WM_WINDOWPOSCHANGED, sent|wparam, SWP_FRAMECHANGED|SWP_NOACTIVATE|SWP_NOSIZE|SWP_NOMOVE|SWP_NOZORDER|SWP_NOREDRAW|SWP_NOCLIENTSIZE|SWP_NOCLIENTMOVE|0x8000 },
    { WM_SIZE, sent|defwinproc },
     /* in MDI frame */
    { WM_WINDOWPOSCHANGING, sent|wparam, SWP_FRAMECHANGED|SWP_NOACTIVATE|SWP_NOSIZE|SWP_NOMOVE|SWP_NOZORDER },
    { WM_NCCALCSIZE, sent|wparam, 1 },
    { WM_WINDOWPOSCHANGED, sent|wparam, SWP_FRAMECHANGED|SWP_NOACTIVATE|SWP_NOSIZE|SWP_NOMOVE|SWP_NOZORDER|SWP_NOCLIENTSIZE|SWP_NOCLIENTMOVE },
    { EVENT_OBJECT_LOCATIONCHANGE, winevent_hook|wparam|lparam, 0, 0 }, /* MDI frame */
    { EVENT_OBJECT_LOCATIONCHANGE, winevent_hook|wparam|lparam, 0, 0 }, /* MDI child */
    /* Win2k sends wparam set to
     * MAKEWPARAM(WM_CREATE, MDI_FIRST_CHILD_ID + nTotalCreated),
     * while Win9x doesn't bother to set child window id according to
     * CLIENTCREATESTRUCT.idFirstChild
     */
    { WM_PARENTNOTIFY, sent /*|wparam, WM_CREATE*/ }, /* in MDI client */
    { WM_SHOWWINDOW, sent|wparam, 1 },
    { WM_WINDOWPOSCHANGING, sent|wparam, SWP_SHOWWINDOW|SWP_NOACTIVATE|SWP_NOSIZE|SWP_NOMOVE|SWP_NOZORDER },
    { EVENT_OBJECT_SHOW, winevent_hook|wparam|lparam, 0, 0 },
    { WM_WINDOWPOSCHANGED, sent|wparam, SWP_SHOWWINDOW|SWP_NOACTIVATE|SWP_NOSIZE|SWP_NOMOVE|SWP_NOZORDER|SWP_NOCLIENTSIZE|SWP_NOCLIENTMOVE },
    { WM_MDIREFRESHMENU, sent/*|wparam|lparam, 0, 0*/ },
    { WM_WINDOWPOSCHANGING, sent|wparam, SWP_SHOWWINDOW|SWP_NOSIZE|SWP_NOMOVE },
    { WM_CHILDACTIVATE, sent|wparam|lparam, 0, 0 },
    { WM_WINDOWPOSCHANGING, sent|wparam|defwinproc, SWP_NOACTIVATE|SWP_NOSIZE|SWP_NOMOVE },

    /* Win9x: message sequence terminates here. */

    { WM_NCACTIVATE, sent|wparam|defwinproc, 1 },
    { HCBT_SETFOCUS, hook }, /* in MDI client */
    { WM_IME_SETCONTEXT, sent|wparam|optional, 1 }, /* in MDI client */
    { EVENT_OBJECT_FOCUS, winevent_hook|wparam|lparam, OBJID_CLIENT, 0 },
    { WM_SETFOCUS, sent }, /* in MDI client */
    { HCBT_SETFOCUS, hook },
    { WM_KILLFOCUS, sent }, /* in MDI client */
    { WM_IME_SETCONTEXT, sent|wparam|optional, 0 }, /* in MDI client */
    { WM_IME_SETCONTEXT, sent|wparam|defwinproc|optional, 1 },
    { EVENT_OBJECT_FOCUS, winevent_hook|wparam|lparam, OBJID_CLIENT, 0 },
    { WM_SETFOCUS, sent|defwinproc },
    { WM_MDIACTIVATE, sent|defwinproc },
     /* in MDI frame */
    { WM_WINDOWPOSCHANGING, sent|wparam, SWP_FRAMECHANGED|SWP_NOACTIVATE|SWP_NOSIZE|SWP_NOMOVE|SWP_NOZORDER },
    { WM_NCCALCSIZE, sent|wparam, 1 },
    { WM_WINDOWPOSCHANGED, sent|wparam, SWP_FRAMECHANGED|SWP_NOACTIVATE|SWP_NOSIZE|SWP_NOMOVE|SWP_NOZORDER|SWP_NOCLIENTSIZE|SWP_NOCLIENTMOVE },
    { EVENT_OBJECT_LOCATIONCHANGE, winevent_hook|wparam|lparam, 0, 0 }, /* MDI frame */
    { 0 }
};
/* CreateWindow for the 2nd MDI child window, initially visible and maximized */
static const struct message WmCreateMDIchildVisibleMaxSeq2[] = {
    /* restore the 1st MDI child */
    { WM_SETREDRAW, sent|wparam, 0 },
    { HCBT_MINMAX, hook },
    { WM_WINDOWPOSCHANGING, sent|wparam, SWP_FRAMECHANGED|0x8000 },
    { WM_NCCALCSIZE, sent|wparam, 1 },
    { WM_CHILDACTIVATE, sent|wparam|lparam, 0, 0 },
    { WM_WINDOWPOSCHANGED, sent|wparam, SWP_FRAMECHANGED|SWP_NOSIZE|SWP_NOMOVE|SWP_NOZORDER|SWP_NOREDRAW|SWP_NOCLIENTSIZE|SWP_NOCLIENTMOVE|0x8000 },
    { WM_SIZE, sent|defwinproc },
     /* in MDI frame */
    { WM_WINDOWPOSCHANGING, sent|wparam, SWP_FRAMECHANGED|SWP_NOACTIVATE|SWP_NOSIZE|SWP_NOMOVE|SWP_NOZORDER },
    { WM_NCCALCSIZE, sent|wparam, 1 },
    { WM_WINDOWPOSCHANGED, sent|wparam, SWP_FRAMECHANGED|SWP_NOACTIVATE|SWP_NOSIZE|SWP_NOMOVE|SWP_NOZORDER|SWP_NOCLIENTSIZE|SWP_NOCLIENTMOVE },
    { EVENT_OBJECT_LOCATIONCHANGE, winevent_hook|wparam|lparam, 0, 0 }, /* MDI frame */
    { EVENT_OBJECT_LOCATIONCHANGE, winevent_hook|wparam|lparam, 0, 0 }, /* MDI child */
    { WM_SETREDRAW, sent|wparam, 1 }, /* in the 1st MDI child */
    /* create the 2nd MDI child */
    { HCBT_CREATEWND, hook },
    { WM_NCCREATE, sent }, 
    { WM_NCCALCSIZE, sent|wparam, 0 },
    { WM_CREATE, sent },
    { EVENT_OBJECT_CREATE, winevent_hook|wparam|lparam, 0, 0 },
    { WM_SIZE, sent },
    { WM_MOVE, sent },
    { HCBT_MINMAX, hook|lparam, 0, SW_MAXIMIZE },
    { WM_GETMINMAXINFO, sent },
    { WM_WINDOWPOSCHANGING, sent|wparam, SWP_FRAMECHANGED|SWP_NOACTIVATE|0x8000 },
    { WM_NCCALCSIZE, sent|wparam, 1 },
    { EVENT_OBJECT_REORDER, winevent_hook|wparam|lparam, OBJID_CLIENT, 0 },
    { WM_WINDOWPOSCHANGED, sent|wparam, SWP_FRAMECHANGED|SWP_NOACTIVATE|SWP_NOSIZE|SWP_NOMOVE|SWP_NOREDRAW|SWP_NOCLIENTSIZE|SWP_NOCLIENTMOVE|0x8000 },
    { WM_SIZE, sent|defwinproc },
     /* in MDI frame */
    { WM_WINDOWPOSCHANGING, sent|wparam, SWP_FRAMECHANGED|SWP_NOACTIVATE|SWP_NOSIZE|SWP_NOMOVE|SWP_NOZORDER },
    { WM_NCCALCSIZE, sent|wparam, 1 },
    { WM_WINDOWPOSCHANGED, sent|wparam, SWP_FRAMECHANGED|SWP_NOACTIVATE|SWP_NOSIZE|SWP_NOMOVE|SWP_NOZORDER|SWP_NOCLIENTSIZE|SWP_NOCLIENTMOVE },
    { EVENT_OBJECT_LOCATIONCHANGE, winevent_hook|wparam|lparam, 0, 0 }, /* MDI frame */
    { EVENT_OBJECT_LOCATIONCHANGE, winevent_hook|wparam|lparam, 0, 0 }, /* MDI child */
    /* Win2k sends wparam set to
     * MAKEWPARAM(WM_CREATE, MDI_FIRST_CHILD_ID + nTotalCreated),
     * while Win9x doesn't bother to set child window id according to
     * CLIENTCREATESTRUCT.idFirstChild
     */
    { WM_PARENTNOTIFY, sent /*|wparam, WM_CREATE*/ }, /* in MDI client */
    { WM_SHOWWINDOW, sent|wparam, 1 },
    { WM_WINDOWPOSCHANGING, sent|wparam, SWP_SHOWWINDOW|SWP_NOACTIVATE|SWP_NOSIZE|SWP_NOMOVE|SWP_NOZORDER },
    { EVENT_OBJECT_SHOW, winevent_hook|wparam|lparam, 0, 0 },
    { WM_WINDOWPOSCHANGED, sent|wparam, SWP_SHOWWINDOW|SWP_NOACTIVATE|SWP_NOSIZE|SWP_NOMOVE|SWP_NOZORDER|SWP_NOCLIENTSIZE|SWP_NOCLIENTMOVE },
    { WM_MDIREFRESHMENU, sent/*|wparam|lparam, 0, 0*/ },
    { WM_WINDOWPOSCHANGING, sent|wparam, SWP_SHOWWINDOW|SWP_NOSIZE|SWP_NOMOVE },
    { WM_CHILDACTIVATE, sent|wparam|lparam, 0, 0 },

    { WM_NCACTIVATE, sent|wparam|defwinproc, 0 }, /* in the 1st MDI child */
    { WM_MDIACTIVATE, sent|defwinproc }, /* in the 1st MDI child */

    { WM_WINDOWPOSCHANGING, sent|wparam|defwinproc, SWP_NOACTIVATE|SWP_NOSIZE|SWP_NOMOVE },

    /* Win9x: message sequence terminates here. */

    { WM_NCACTIVATE, sent|wparam|defwinproc, 1 },
    { HCBT_SETFOCUS, hook },
    { WM_KILLFOCUS, sent|defwinproc }, /* in the 1st MDI child */
    { WM_IME_SETCONTEXT, sent|wparam|defwinproc|optional, 0 }, /* in the 1st MDI child */
    { WM_IME_SETCONTEXT, sent|wparam|optional, 1 }, /* in MDI client */
    { EVENT_OBJECT_FOCUS, winevent_hook|wparam|lparam, OBJID_CLIENT, 0 },
    { WM_SETFOCUS, sent }, /* in MDI client */
    { HCBT_SETFOCUS, hook },
    { WM_KILLFOCUS, sent }, /* in MDI client */
    { WM_IME_SETCONTEXT, sent|wparam|optional, 0 }, /* in MDI client */
    { WM_IME_SETCONTEXT, sent|wparam|defwinproc|optional, 1 },
    { EVENT_OBJECT_FOCUS, winevent_hook|wparam|lparam, OBJID_CLIENT, 0 },
    { WM_SETFOCUS, sent|defwinproc },

    { WM_MDIACTIVATE, sent|defwinproc },
     /* in MDI frame */
    { WM_WINDOWPOSCHANGING, sent|wparam, SWP_FRAMECHANGED|SWP_NOACTIVATE|SWP_NOSIZE|SWP_NOMOVE|SWP_NOZORDER },
    { WM_NCCALCSIZE, sent|wparam, 1 },
    { WM_WINDOWPOSCHANGED, sent|wparam, SWP_FRAMECHANGED|SWP_NOACTIVATE|SWP_NOSIZE|SWP_NOMOVE|SWP_NOZORDER|SWP_NOCLIENTSIZE|SWP_NOCLIENTMOVE },
    { EVENT_OBJECT_LOCATIONCHANGE, winevent_hook|wparam|lparam, 0, 0 }, /* MDI frame */
    { 0 }
};
/* WM_MDICREATE MDI child window, initially visible and maximized */
static const struct message WmCreateMDIchildVisibleMaxSeq3[] = {
    { WM_MDICREATE, sent },
    { HCBT_CREATEWND, hook },
    { WM_NCCREATE, sent }, 
    { WM_NCCALCSIZE, sent|wparam, 0 },
    { WM_CREATE, sent },
    { EVENT_OBJECT_CREATE, winevent_hook|wparam|lparam, 0, 0 },
    { WM_SIZE, sent },
    { WM_MOVE, sent },
    { HCBT_MINMAX, hook|lparam, 0, SW_MAXIMIZE },
    { WM_GETMINMAXINFO, sent },
    { WM_WINDOWPOSCHANGING, sent|wparam, SWP_FRAMECHANGED|SWP_NOACTIVATE|0x8000 },
    { WM_NCCALCSIZE, sent|wparam, 1 },
    { WM_WINDOWPOSCHANGED, sent|wparam, SWP_FRAMECHANGED|SWP_NOACTIVATE|SWP_NOSIZE|SWP_NOMOVE|SWP_NOZORDER|SWP_NOREDRAW|SWP_NOCLIENTSIZE|SWP_NOCLIENTMOVE|0x8000 },
    { WM_SIZE, sent|defwinproc },

     /* in MDI frame */
    { WM_WINDOWPOSCHANGING, sent|wparam, SWP_FRAMECHANGED|SWP_NOACTIVATE|SWP_NOSIZE|SWP_NOMOVE|SWP_NOZORDER },
    { WM_NCCALCSIZE, sent|wparam, 1 },
    { WM_WINDOWPOSCHANGED, sent|wparam, SWP_FRAMECHANGED|SWP_NOACTIVATE|SWP_NOSIZE|SWP_NOMOVE|SWP_NOZORDER|SWP_NOCLIENTSIZE|SWP_NOCLIENTMOVE },
    { EVENT_OBJECT_LOCATIONCHANGE, winevent_hook|wparam|lparam, 0, 0 }, /* MDI frame */
    { EVENT_OBJECT_LOCATIONCHANGE, winevent_hook|wparam|lparam, 0, 0 }, /* MDI child */

    /* Win2k sends wparam set to
     * MAKEWPARAM(WM_CREATE, MDI_FIRST_CHILD_ID + nTotalCreated),
     * while Win9x doesn't bother to set child window id according to
     * CLIENTCREATESTRUCT.idFirstChild
     */
    { WM_PARENTNOTIFY, sent /*|wparam, WM_CREATE*/ }, /* in MDI client */
    { WM_SHOWWINDOW, sent|wparam, 1 },
    { WM_WINDOWPOSCHANGING, sent|wparam, SWP_SHOWWINDOW|SWP_NOACTIVATE|SWP_NOSIZE|SWP_NOMOVE|SWP_NOZORDER },

    { EVENT_OBJECT_SHOW, winevent_hook|wparam|lparam, 0, 0 },

    { WM_WINDOWPOSCHANGED, sent|wparam, SWP_SHOWWINDOW|SWP_NOACTIVATE|SWP_NOSIZE|SWP_NOMOVE|SWP_NOZORDER|SWP_NOCLIENTSIZE|SWP_NOCLIENTMOVE },
    { WM_MDIREFRESHMENU, sent/*|wparam|lparam, 0, 0*/ },
    { WM_WINDOWPOSCHANGING, sent|wparam, SWP_SHOWWINDOW|SWP_NOSIZE|SWP_NOMOVE },

    { WM_CHILDACTIVATE, sent|wparam|lparam, 0, 0 },
    { WM_WINDOWPOSCHANGING, sent|wparam|defwinproc, SWP_NOACTIVATE|SWP_NOSIZE|SWP_NOMOVE },

    /* Win9x: message sequence terminates here. */

    { WM_NCACTIVATE, sent|wparam|defwinproc, 1 },
    { HCBT_SETFOCUS, hook }, /* in MDI client */
    { WM_IME_SETCONTEXT, sent|wparam|optional, 1 }, /* in MDI client */
    { EVENT_OBJECT_FOCUS, winevent_hook|wparam|lparam, OBJID_CLIENT, 0 },
    { WM_SETFOCUS, sent }, /* in MDI client */
    { HCBT_SETFOCUS, hook },
    { WM_KILLFOCUS, sent }, /* in MDI client */
    { WM_IME_SETCONTEXT, sent|wparam|optional, 0 }, /* in MDI client */
    { WM_IME_SETCONTEXT, sent|wparam|defwinproc|optional, 1 },
    { EVENT_OBJECT_FOCUS, winevent_hook|wparam|lparam, OBJID_CLIENT, 0 },
    { WM_SETFOCUS, sent|defwinproc },

    { WM_MDIACTIVATE, sent|defwinproc },

     /* in MDI child */
    { WM_WINDOWPOSCHANGING, sent|wparam, SWP_FRAMECHANGED|SWP_NOACTIVATE|SWP_NOSIZE|SWP_NOMOVE|SWP_NOZORDER },
    { WM_NCCALCSIZE, sent|wparam, 1 },
    { WM_WINDOWPOSCHANGED, sent|wparam, SWP_FRAMECHANGED|SWP_NOACTIVATE|SWP_NOSIZE|SWP_NOMOVE|SWP_NOZORDER|SWP_NOCLIENTSIZE|SWP_NOCLIENTMOVE },
    { EVENT_OBJECT_LOCATIONCHANGE, winevent_hook|wparam|lparam, 0, 0 },

     /* in MDI frame */
    { WM_WINDOWPOSCHANGING, sent|wparam, SWP_FRAMECHANGED|SWP_NOACTIVATE|SWP_NOSIZE|SWP_NOMOVE|SWP_NOZORDER },
    { WM_NCCALCSIZE, sent|wparam, 1 },
    { WM_WINDOWPOSCHANGED, sent|wparam, SWP_FRAMECHANGED|SWP_NOACTIVATE|SWP_NOSIZE|SWP_NOMOVE|SWP_NOZORDER },
    { WM_MOVE, sent|defwinproc },
    { WM_SIZE, sent|defwinproc },

     /* in MDI client */
    { WM_WINDOWPOSCHANGING, sent|wparam, SWP_NOACTIVATE|SWP_NOZORDER },
    { WM_NCCALCSIZE, sent|wparam, 1 },
    { WM_WINDOWPOSCHANGED, sent|wparam, SWP_NOACTIVATE|SWP_NOMOVE|SWP_NOZORDER|SWP_NOCLIENTMOVE },
    { WM_SIZE, sent },

     /* in MDI child */
    { WM_WINDOWPOSCHANGING, sent|wparam, SWP_NOACTIVATE|SWP_NOZORDER },
    { WM_NCCALCSIZE, sent|wparam, 1 },
    { WM_WINDOWPOSCHANGED, sent|wparam, SWP_NOACTIVATE|SWP_NOMOVE|SWP_NOZORDER|SWP_NOCLIENTMOVE },
    { WM_SIZE, sent|defwinproc },

    { EVENT_OBJECT_LOCATIONCHANGE, winevent_hook|wparam|lparam, 0, 0 }, /* MDI child */
    { EVENT_OBJECT_LOCATIONCHANGE, winevent_hook|wparam|lparam, 0, 0 }, /* MDI client */
    { EVENT_OBJECT_LOCATIONCHANGE, winevent_hook|wparam|lparam, 0, 0 }, /* MDI frame */

    { 0 }
};
/* WM_SYSCOMMAND/SC_CLOSE for the 2nd MDI child window, initially visible and maximized */
static const struct message WmDestroyMDIchildVisibleMaxSeq2[] = {
    { WM_SYSCOMMAND, sent|wparam, SC_CLOSE },
    { HCBT_SYSCOMMAND, hook },
    { WM_CLOSE, sent|defwinproc },
    { WM_MDIDESTROY, sent }, /* in MDI client */

    /* bring the 1st MDI child to top */
    { WM_WINDOWPOSCHANGING, sent|wparam|defwinproc, SWP_NOSIZE|SWP_NOMOVE }, /* in the 1st MDI child */
    { WM_WINDOWPOSCHANGING, sent|wparam|defwinproc, SWP_NOACTIVATE|SWP_NOSIZE|SWP_NOMOVE }, /* in the 2nd MDI child */

    { EVENT_OBJECT_REORDER, winevent_hook|wparam|lparam, OBJID_CLIENT, 0 },

    { WM_CHILDACTIVATE, sent|defwinproc|wparam|lparam, 0, 0 }, /* in the 1st MDI child */
    { WM_NCACTIVATE, sent|wparam|defwinproc, 0 }, /* in the 1st MDI child */
    { WM_MDIACTIVATE, sent|defwinproc }, /* in the 1st MDI child */

    /* maximize the 1st MDI child */
    { HCBT_MINMAX, hook },
    { WM_GETMINMAXINFO, sent|defwinproc },
    { WM_WINDOWPOSCHANGING, sent|wparam|defwinproc, SWP_FRAMECHANGED|0x8000 },
    { WM_NCCALCSIZE, sent|defwinproc|wparam, 1 },
    { WM_CHILDACTIVATE, sent|defwinproc|wparam|lparam, 0, 0 },
    { WM_WINDOWPOSCHANGED, sent|wparam|defwinproc, SWP_FRAMECHANGED|SWP_NOSIZE|SWP_NOMOVE|SWP_NOZORDER|SWP_NOREDRAW|SWP_NOCLIENTSIZE|SWP_NOCLIENTMOVE|0x8000 },
    { WM_SIZE, sent|defwinproc },

    /* restore the 2nd MDI child */
    { WM_SETREDRAW, sent|defwinproc|wparam, 0 },
    { HCBT_MINMAX, hook },
    { WM_WINDOWPOSCHANGING, sent|wparam|defwinproc, SWP_NOACTIVATE|SWP_FRAMECHANGED|SWP_SHOWWINDOW|SWP_NOZORDER|0x8000 },
    { WM_NCCALCSIZE, sent|defwinproc|wparam, 1 },

    { EVENT_OBJECT_SHOW, winevent_hook|wparam|lparam, 0, 0 },

    { WM_WINDOWPOSCHANGED, sent|wparam|defwinproc, SWP_NOACTIVATE|SWP_FRAMECHANGED|SWP_SHOWWINDOW|SWP_NOSIZE|SWP_NOMOVE|SWP_NOZORDER|SWP_NOREDRAW|SWP_NOCLIENTSIZE|SWP_NOCLIENTMOVE|0x8000 },
    { WM_SIZE, sent|defwinproc },

    { EVENT_OBJECT_LOCATIONCHANGE, winevent_hook|wparam|lparam, 0, 0 }, /* MDI frame */

    { WM_SETREDRAW, sent|defwinproc|wparam, 1 },
     /* in MDI frame */
    { WM_WINDOWPOSCHANGING, sent|wparam, SWP_FRAMECHANGED|SWP_NOACTIVATE|SWP_NOSIZE|SWP_NOMOVE|SWP_NOZORDER },
    { WM_NCCALCSIZE, sent|wparam, 1 },
    { WM_WINDOWPOSCHANGED, sent|wparam, SWP_FRAMECHANGED|SWP_NOACTIVATE|SWP_NOSIZE|SWP_NOMOVE|SWP_NOZORDER|SWP_NOCLIENTSIZE|SWP_NOCLIENTMOVE },
    { EVENT_OBJECT_LOCATIONCHANGE, winevent_hook|wparam|lparam, 0, 0 }, /* MDI frame */
    { EVENT_OBJECT_LOCATIONCHANGE, winevent_hook|wparam|lparam, 0, 0 }, /* MDI child */

    /* bring the 1st MDI child to top */
    { WM_WINDOWPOSCHANGING, sent|wparam|defwinproc, SWP_NOACTIVATE|SWP_NOSIZE|SWP_NOMOVE },
    { WM_NCACTIVATE, sent|wparam|defwinproc, 1 },
    { HCBT_SETFOCUS, hook },
    { WM_KILLFOCUS, sent|defwinproc },
    { WM_IME_SETCONTEXT, sent|wparam|defwinproc|optional, 0 },
    { WM_IME_SETCONTEXT, sent|wparam|optional, 1 }, /* in MDI client */
    { EVENT_OBJECT_FOCUS, winevent_hook|wparam|lparam, OBJID_CLIENT, 0 },
    { WM_SETFOCUS, sent }, /* in MDI client */
    { HCBT_SETFOCUS, hook },
    { WM_KILLFOCUS, sent }, /* in MDI client */
    { WM_IME_SETCONTEXT, sent|wparam|optional, 0 }, /* in MDI client */
    { WM_IME_SETCONTEXT, sent|wparam|defwinproc|optional, 1 },
    { EVENT_OBJECT_FOCUS, winevent_hook|wparam|lparam, OBJID_CLIENT, 0 },
    { WM_SETFOCUS, sent|defwinproc },
    { WM_MDIACTIVATE, sent|defwinproc },
    { WM_WINDOWPOSCHANGED, sent|wparam|defwinproc, SWP_NOSIZE|SWP_NOMOVE|SWP_NOREDRAW|SWP_NOCLIENTSIZE|SWP_NOCLIENTMOVE },

    /* apparently ShowWindow(SW_SHOW) on an MDI client */
    { WM_SHOWWINDOW, sent|wparam, 1 },
    { WM_WINDOWPOSCHANGING, sent|wparam, SWP_SHOWWINDOW|SWP_NOACTIVATE|SWP_NOSIZE|SWP_NOMOVE|SWP_NOZORDER },
    { EVENT_OBJECT_SHOW, winevent_hook|wparam|lparam, 0, 0 },
    { WM_WINDOWPOSCHANGED, sent|wparam, SWP_SHOWWINDOW|SWP_NOACTIVATE|SWP_NOSIZE|SWP_NOMOVE|SWP_NOZORDER|SWP_NOCLIENTSIZE|SWP_NOCLIENTMOVE },
    { WM_MDIREFRESHMENU, sent },

    { HCBT_DESTROYWND, hook },
    /* Win2k sends wparam set to
     * MAKEWPARAM(WM_DESTROY, MDI_FIRST_CHILD_ID + nTotalCreated),
     * while Win9x doesn't bother to set child window id according to
     * CLIENTCREATESTRUCT.idFirstChild
     */
    { WM_PARENTNOTIFY, sent /*|wparam, WM_DESTROY*/ }, /* in MDI client */
    { WM_SHOWWINDOW, sent|defwinproc|wparam, 0 },
    { WM_WINDOWPOSCHANGING, sent|wparam|defwinproc, SWP_HIDEWINDOW|SWP_NOACTIVATE|SWP_NOSIZE|SWP_NOMOVE|SWP_NOZORDER },
    { EVENT_OBJECT_HIDE, winevent_hook|wparam|lparam, 0, 0 },
    { WM_ERASEBKGND, sent|parent|optional },
    { WM_WINDOWPOSCHANGED, sent|wparam|defwinproc, SWP_HIDEWINDOW|SWP_NOACTIVATE|SWP_NOSIZE|SWP_NOMOVE|SWP_NOZORDER|SWP_NOCLIENTSIZE|SWP_NOCLIENTMOVE },

    { EVENT_OBJECT_DESTROY, winevent_hook|wparam|lparam, 0, 0 },
    { WM_DESTROY, sent|defwinproc },
    { WM_NCDESTROY, sent|defwinproc },
    { 0 }
};
/* WM_MDIDESTROY for the single MDI child window, initially visible and maximized */
static const struct message WmDestroyMDIchildVisibleMaxSeq1[] = {
    { WM_MDIDESTROY, sent }, /* in MDI client */
    { WM_SHOWWINDOW, sent|wparam, 0 },
    { WM_WINDOWPOSCHANGING, sent|wparam, SWP_HIDEWINDOW|SWP_NOACTIVATE|SWP_NOSIZE|SWP_NOMOVE|SWP_NOZORDER },
    { EVENT_OBJECT_HIDE, winevent_hook|wparam|lparam, 0, 0 },
    { WM_ERASEBKGND, sent|parent|optional },
    { WM_WINDOWPOSCHANGED, sent|wparam, SWP_HIDEWINDOW|SWP_NOACTIVATE|SWP_NOSIZE|SWP_NOMOVE|SWP_NOZORDER|SWP_NOCLIENTSIZE|SWP_NOCLIENTMOVE },

    { HCBT_SETFOCUS, hook },
    { WM_KILLFOCUS, sent },
    { WM_IME_SETCONTEXT, sent|wparam|optional, 0 },
    { WM_IME_SETCONTEXT, sent|wparam|optional, 1 }, /* in MDI client */
    { EVENT_OBJECT_FOCUS, winevent_hook|wparam|lparam, OBJID_CLIENT, 0 },
    { WM_SETFOCUS, sent }, /* in MDI client */
    { HCBT_SETFOCUS, hook },
    { WM_KILLFOCUS, sent }, /* in MDI client */
    { WM_IME_SETCONTEXT, sent|wparam|optional, 0 }, /* in MDI client */
    { WM_IME_SETCONTEXT, sent|wparam|optional, 1 },
    { EVENT_OBJECT_FOCUS, winevent_hook|wparam|lparam, OBJID_CLIENT, 0 },
    { WM_SETFOCUS, sent },

     /* in MDI child */
    { WM_WINDOWPOSCHANGING, sent|wparam, SWP_FRAMECHANGED|SWP_NOACTIVATE|SWP_NOSIZE|SWP_NOMOVE|SWP_NOZORDER },
    { WM_NCCALCSIZE, sent|wparam, 1 },
    { WM_WINDOWPOSCHANGED, sent|wparam, SWP_FRAMECHANGED|SWP_NOACTIVATE|SWP_NOSIZE|SWP_NOMOVE|SWP_NOZORDER|SWP_NOREDRAW|SWP_NOCLIENTSIZE|SWP_NOCLIENTMOVE },
    { EVENT_OBJECT_LOCATIONCHANGE, winevent_hook|wparam|lparam, 0, 0 }, /* MDI child */

     /* in MDI frame */
    { WM_WINDOWPOSCHANGING, sent|wparam, SWP_FRAMECHANGED|SWP_NOACTIVATE|SWP_NOSIZE|SWP_NOMOVE|SWP_NOZORDER },
    { WM_NCCALCSIZE, sent|wparam, 1 },
    { WM_WINDOWPOSCHANGED, sent|wparam, SWP_FRAMECHANGED|SWP_NOACTIVATE|SWP_NOSIZE|SWP_NOMOVE|SWP_NOZORDER },
    { WM_MOVE, sent|defwinproc },
    { WM_SIZE, sent|defwinproc },

     /* in MDI client */
    { WM_WINDOWPOSCHANGING, sent|wparam, SWP_NOACTIVATE|SWP_NOZORDER },
    { WM_NCCALCSIZE, sent|wparam, 1 },
    { WM_WINDOWPOSCHANGED, sent|wparam, SWP_NOACTIVATE|SWP_NOMOVE|SWP_NOZORDER|SWP_NOCLIENTMOVE },
    { WM_SIZE, sent },

     /* in MDI child */
    { WM_WINDOWPOSCHANGING, sent|wparam, SWP_NOACTIVATE|SWP_NOZORDER },
    { WM_NCCALCSIZE, sent|wparam, 1 },
    { WM_WINDOWPOSCHANGED, sent|wparam, SWP_NOACTIVATE|SWP_NOMOVE|SWP_NOZORDER|SWP_NOREDRAW|SWP_NOCLIENTMOVE },
    { WM_SIZE, sent|defwinproc },

     /* in MDI child */
    { WM_WINDOWPOSCHANGING, sent|wparam|defwinproc, SWP_FRAMECHANGED|SWP_NOACTIVATE|SWP_NOSIZE|SWP_NOMOVE|SWP_NOZORDER },
    { WM_NCCALCSIZE, sent|wparam|defwinproc, 1 },
    { WM_WINDOWPOSCHANGED, sent|wparam|defwinproc, SWP_FRAMECHANGED|SWP_NOACTIVATE|SWP_NOSIZE|SWP_NOMOVE|SWP_NOZORDER|SWP_NOREDRAW|SWP_NOCLIENTSIZE|SWP_NOCLIENTMOVE },
    { EVENT_OBJECT_LOCATIONCHANGE, winevent_hook|wparam|lparam, 0, 0 }, /* MDI child */

     /* in MDI frame */
    { WM_WINDOWPOSCHANGING, sent|wparam|defwinproc, SWP_FRAMECHANGED|SWP_NOACTIVATE|SWP_NOSIZE|SWP_NOMOVE|SWP_NOZORDER },
    { WM_NCCALCSIZE, sent|wparam|defwinproc, 1 },
    { WM_WINDOWPOSCHANGED, sent|wparam|defwinproc, SWP_FRAMECHANGED|SWP_NOACTIVATE|SWP_NOSIZE|SWP_NOMOVE|SWP_NOZORDER },
    { WM_MOVE, sent|defwinproc },
    { WM_SIZE, sent|defwinproc },

     /* in MDI client */
    { WM_WINDOWPOSCHANGING, sent|wparam, SWP_NOACTIVATE|SWP_NOZORDER },
    { WM_NCCALCSIZE, sent|wparam, 1 },
    { WM_WINDOWPOSCHANGED, sent|wparam, SWP_NOACTIVATE|SWP_NOMOVE|SWP_NOZORDER|SWP_NOCLIENTMOVE },
    { WM_SIZE, sent },

     /* in MDI child */
    { WM_WINDOWPOSCHANGING, sent|wparam|defwinproc, SWP_NOACTIVATE|SWP_NOZORDER },
    { WM_NCCALCSIZE, sent|wparam|defwinproc, 1 },
    { WM_WINDOWPOSCHANGED, sent|wparam|defwinproc, SWP_NOACTIVATE|SWP_NOMOVE|SWP_NOZORDER|SWP_NOREDRAW|SWP_NOCLIENTMOVE },
    { WM_SIZE, sent|defwinproc },
    { EVENT_OBJECT_LOCATIONCHANGE, winevent_hook|wparam|lparam, 0, 0 }, /* MDI child */
    { EVENT_OBJECT_LOCATIONCHANGE, winevent_hook|wparam|lparam, 0, 0 }, /* MDI client */
    { EVENT_OBJECT_LOCATIONCHANGE, winevent_hook|wparam|lparam, 0, 0 }, /* MDI frame */
    { EVENT_OBJECT_LOCATIONCHANGE, winevent_hook|wparam|lparam, 0, 0 }, /* MDI child */
    { EVENT_OBJECT_LOCATIONCHANGE, winevent_hook|wparam|lparam, 0, 0 }, /* MDI client */
    { EVENT_OBJECT_LOCATIONCHANGE, winevent_hook|wparam|lparam, 0, 0 }, /* MDI frame */

     /* in MDI frame */
    { WM_WINDOWPOSCHANGING, sent|wparam, SWP_FRAMECHANGED|SWP_NOACTIVATE|SWP_NOSIZE|SWP_NOMOVE|SWP_NOZORDER },
    { WM_NCCALCSIZE, sent|wparam, 1 },
    { WM_WINDOWPOSCHANGED, sent|wparam, SWP_FRAMECHANGED|SWP_NOACTIVATE|SWP_NOSIZE|SWP_NOMOVE|SWP_NOZORDER|SWP_NOCLIENTSIZE|SWP_NOCLIENTMOVE },
    { EVENT_OBJECT_LOCATIONCHANGE, winevent_hook|wparam|lparam, 0, 0 }, /* MDI frame */

    { WM_NCACTIVATE, sent|wparam, 0 },
    { WM_MDIACTIVATE, sent },

    { HCBT_MINMAX, hook },
    { WM_WINDOWPOSCHANGING, sent|wparam, SWP_FRAMECHANGED|SWP_SHOWWINDOW|0x8000 },
    { WM_NCCALCSIZE, sent|wparam, 1 },

    { EVENT_OBJECT_SHOW, winevent_hook|wparam|lparam, 0, 0 },

    { WM_CHILDACTIVATE, sent|wparam|lparam, 0, 0 },
    { WM_WINDOWPOSCHANGED, sent|wparam, SWP_FRAMECHANGED|SWP_SHOWWINDOW|SWP_NOMOVE|SWP_NOZORDER|SWP_NOCLIENTMOVE|0x8000 },
    { WM_SIZE, sent|defwinproc },

     /* in MDI child */
    { WM_WINDOWPOSCHANGING, sent|wparam|defwinproc, SWP_FRAMECHANGED|SWP_NOACTIVATE|SWP_NOSIZE|SWP_NOMOVE|SWP_NOZORDER },
    { WM_NCCALCSIZE, sent|wparam|defwinproc, 1 },
    { WM_WINDOWPOSCHANGED, sent|wparam|defwinproc, SWP_FRAMECHANGED|SWP_NOACTIVATE|SWP_NOSIZE|SWP_NOMOVE|SWP_NOZORDER|SWP_NOCLIENTSIZE|SWP_NOCLIENTMOVE },
    { EVENT_OBJECT_LOCATIONCHANGE, winevent_hook|wparam|lparam, 0, 0 }, /* MDI child */

     /* in MDI frame */
    { WM_WINDOWPOSCHANGING, sent|wparam, SWP_FRAMECHANGED|SWP_NOACTIVATE|SWP_NOSIZE|SWP_NOMOVE|SWP_NOZORDER },
    { WM_NCCALCSIZE, sent|wparam, 1 },
    { WM_WINDOWPOSCHANGED, sent|wparam, SWP_FRAMECHANGED|SWP_NOACTIVATE|SWP_NOSIZE|SWP_NOMOVE|SWP_NOZORDER },
    { WM_MOVE, sent|defwinproc },
    { WM_SIZE, sent|defwinproc },

     /* in MDI client */
    { WM_WINDOWPOSCHANGING, sent|wparam, SWP_NOACTIVATE|SWP_NOZORDER },
    { WM_NCCALCSIZE, sent|wparam, 1 },
    { WM_WINDOWPOSCHANGED, sent|wparam, SWP_NOACTIVATE|SWP_NOMOVE|SWP_NOZORDER|SWP_NOCLIENTMOVE },
    { WM_SIZE, sent },
    { EVENT_OBJECT_LOCATIONCHANGE, winevent_hook|wparam|lparam, 0, 0 }, /* MDI child */
    { EVENT_OBJECT_LOCATIONCHANGE, winevent_hook|wparam|lparam, 0, 0 }, /* MDI client */
    { EVENT_OBJECT_LOCATIONCHANGE, winevent_hook|wparam|lparam, 0, 0 }, /* MDI frame */

    { HCBT_SETFOCUS, hook },
    { WM_KILLFOCUS, sent },
    { WM_IME_SETCONTEXT, sent|wparam|optional, 0 },
    { WM_IME_SETCONTEXT, sent|wparam|optional, 1 }, /* in MDI client */
    { EVENT_OBJECT_FOCUS, winevent_hook|wparam|lparam, OBJID_CLIENT, 0 },
    { WM_SETFOCUS, sent }, /* in MDI client */

    { WM_MDIREFRESHMENU, sent }, /* in MDI client */

    { HCBT_DESTROYWND, hook },
    /* Win2k sends wparam set to
     * MAKEWPARAM(WM_DESTROY, MDI_FIRST_CHILD_ID + nTotalCreated),
     * while Win9x doesn't bother to set child window id according to
     * CLIENTCREATESTRUCT.idFirstChild
     */
    { WM_PARENTNOTIFY, sent /*|wparam, WM_DESTROY*/ }, /* in MDI client */

    { WM_SHOWWINDOW, sent|wparam, 0 },
    { WM_WINDOWPOSCHANGING, sent|wparam, SWP_HIDEWINDOW|SWP_NOACTIVATE|SWP_NOSIZE|SWP_NOMOVE|SWP_NOZORDER },
    { EVENT_OBJECT_HIDE, winevent_hook|wparam|lparam, 0, 0 },
    { WM_ERASEBKGND, sent|parent|optional },
    { WM_WINDOWPOSCHANGED, sent|wparam, SWP_HIDEWINDOW|SWP_NOACTIVATE|SWP_NOSIZE|SWP_NOMOVE|SWP_NOZORDER|SWP_NOCLIENTSIZE|SWP_NOCLIENTMOVE },

    { EVENT_OBJECT_DESTROY, winevent_hook|wparam|lparam, 0, 0 },
    { WM_DESTROY, sent },
    { WM_NCDESTROY, sent },
    { 0 }
};
/* ShowWindow(SW_MAXIMIZE) for a not visible MDI child window */
static const struct message WmMaximizeMDIchildInvisibleSeq[] = {
    { HCBT_MINMAX, hook },
    { WM_GETMINMAXINFO, sent },
    { WM_WINDOWPOSCHANGING, sent|wparam, SWP_SHOWWINDOW|SWP_FRAMECHANGED|0x8000 },
    { WM_NCCALCSIZE, sent|wparam, 1 },
    { EVENT_OBJECT_SHOW, winevent_hook|wparam|lparam, 0, 0 },
    { WM_CHILDACTIVATE, sent|wparam|lparam, 0, 0 },

    { WM_WINDOWPOSCHANGING, sent|wparam|defwinproc, SWP_NOACTIVATE|SWP_NOSIZE|SWP_NOMOVE },
    { WM_NCACTIVATE, sent|wparam|defwinproc, 1 },
    { HCBT_SETFOCUS, hook },
    { WM_IME_SETCONTEXT, sent|wparam|optional, 1 }, /* in MDI client */
    { EVENT_OBJECT_FOCUS, winevent_hook|wparam|lparam, OBJID_CLIENT, 0 },
    { WM_SETFOCUS, sent }, /* in MDI client */
    { HCBT_SETFOCUS, hook },
    { WM_KILLFOCUS, sent }, /* in MDI client */
    { WM_IME_SETCONTEXT, sent|wparam|optional, 0 }, /* in MDI client */
    { WM_IME_SETCONTEXT, sent|wparam|defwinproc|optional, 1 },
    { EVENT_OBJECT_FOCUS, winevent_hook|wparam|lparam, OBJID_CLIENT, 0 },
    { WM_SETFOCUS, sent|defwinproc },
    { WM_MDIACTIVATE, sent|defwinproc },
    { WM_WINDOWPOSCHANGED, sent|wparam, SWP_SHOWWINDOW|SWP_FRAMECHANGED|SWP_NOSIZE|SWP_NOMOVE|SWP_NOZORDER|SWP_NOCLIENTSIZE|SWP_NOCLIENTMOVE|0x8000 },
    { WM_SIZE, sent|defwinproc },
     /* in MDI frame */
    { WM_WINDOWPOSCHANGING, sent|wparam, SWP_FRAMECHANGED|SWP_NOACTIVATE|SWP_NOSIZE|SWP_NOMOVE|SWP_NOZORDER },
    { WM_NCCALCSIZE, sent|wparam, 1 },
    { WM_WINDOWPOSCHANGED, sent|wparam, SWP_FRAMECHANGED|SWP_NOACTIVATE|SWP_NOSIZE|SWP_NOMOVE|SWP_NOZORDER|SWP_NOCLIENTSIZE|SWP_NOCLIENTMOVE },
    { EVENT_OBJECT_LOCATIONCHANGE, winevent_hook|wparam|lparam, 0, 0 }, /* MDI frame */
    { EVENT_OBJECT_LOCATIONCHANGE, winevent_hook|wparam|lparam, 0, 0 }, /* MDI child */
    { 0 }
};
/* ShowWindow(SW_MAXIMIZE) for a visible MDI child window */
static const struct message WmMaximizeMDIchildVisibleSeq[] = {
    { HCBT_MINMAX, hook },
    { WM_GETMINMAXINFO, sent },
    { WM_WINDOWPOSCHANGING, sent|wparam, SWP_FRAMECHANGED|0x8000 },
    { WM_NCCALCSIZE, sent|wparam, 1 },
    { WM_CHILDACTIVATE, sent|wparam|lparam, 0, 0 },
    { WM_WINDOWPOSCHANGED, sent|wparam, SWP_FRAMECHANGED|SWP_NOSIZE|SWP_NOMOVE|SWP_NOZORDER|SWP_NOCLIENTSIZE|SWP_NOCLIENTMOVE|0x8000 },
    { WM_SIZE, sent|defwinproc },
     /* in MDI frame */
    { WM_WINDOWPOSCHANGING, sent|wparam, SWP_FRAMECHANGED|SWP_NOACTIVATE|SWP_NOSIZE|SWP_NOMOVE|SWP_NOZORDER },
    { WM_NCCALCSIZE, sent|wparam, 1 },
    { WM_WINDOWPOSCHANGED, sent|wparam, SWP_FRAMECHANGED|SWP_NOACTIVATE|SWP_NOSIZE|SWP_NOMOVE|SWP_NOZORDER|SWP_NOCLIENTSIZE|SWP_NOCLIENTMOVE },
    { EVENT_OBJECT_LOCATIONCHANGE, winevent_hook|wparam|lparam, 0, 0 }, /* MDI frame */
    { EVENT_OBJECT_LOCATIONCHANGE, winevent_hook|wparam|lparam, 0, 0 }, /* MDI child */
    { 0 }
};
/* ShowWindow(SW_RESTORE) for a visible MDI child window */
static const struct message WmRestoreMDIchildVisibleSeq[] = {
    { HCBT_MINMAX, hook },
    { WM_WINDOWPOSCHANGING, sent|wparam, SWP_FRAMECHANGED|0x8000 },
    { WM_NCCALCSIZE, sent|wparam, 1 },
    { WM_CHILDACTIVATE, sent|wparam|lparam, 0, 0 },
    { WM_WINDOWPOSCHANGED, sent|wparam, SWP_FRAMECHANGED|SWP_NOSIZE|SWP_NOMOVE|SWP_NOZORDER|SWP_NOCLIENTSIZE|SWP_NOCLIENTMOVE|0x8000 },
    { WM_SIZE, sent|defwinproc },
     /* in MDI frame */
    { WM_WINDOWPOSCHANGING, sent|wparam, SWP_FRAMECHANGED|SWP_NOACTIVATE|SWP_NOSIZE|SWP_NOMOVE|SWP_NOZORDER },
    { WM_NCCALCSIZE, sent|wparam, 1 },
    { WM_WINDOWPOSCHANGED, sent|wparam, SWP_FRAMECHANGED|SWP_NOACTIVATE|SWP_NOSIZE|SWP_NOMOVE|SWP_NOZORDER|SWP_NOCLIENTSIZE|SWP_NOCLIENTMOVE },
    { EVENT_OBJECT_LOCATIONCHANGE, winevent_hook|wparam|lparam, 0, 0 }, /* MDI frame */
    { EVENT_OBJECT_LOCATIONCHANGE, winevent_hook|wparam|lparam, 0, 0 }, /* MDI child */
    { 0 }
};
/* ShowWindow(SW_RESTORE) for a not visible MDI child window */
static const struct message WmRestoreMDIchildInisibleSeq[] = {
    { HCBT_MINMAX, hook },
    { WM_WINDOWPOSCHANGING, sent|wparam, SWP_SHOWWINDOW|SWP_FRAMECHANGED|0x8000 },
    { WM_NCCALCSIZE, sent|wparam, 1 },
    { EVENT_OBJECT_SHOW, winevent_hook|wparam|lparam, 0, 0 },
    { WM_CHILDACTIVATE, sent|wparam|lparam, 0, 0 },
    { WM_WINDOWPOSCHANGED, sent|wparam, SWP_SHOWWINDOW|SWP_FRAMECHANGED|SWP_NOSIZE|SWP_NOMOVE|SWP_NOZORDER|SWP_NOCLIENTSIZE|SWP_NOCLIENTMOVE|0x8000 },
    { WM_SIZE, sent|defwinproc },
     /* in MDI frame */
    { WM_WINDOWPOSCHANGING, sent|wparam, SWP_FRAMECHANGED|SWP_NOACTIVATE|SWP_NOSIZE|SWP_NOMOVE|SWP_NOZORDER },
    { WM_NCCALCSIZE, sent|wparam, 1 },
    { WM_WINDOWPOSCHANGED, sent|wparam, SWP_FRAMECHANGED|SWP_NOACTIVATE|SWP_NOSIZE|SWP_NOMOVE|SWP_NOZORDER|SWP_NOCLIENTSIZE|SWP_NOCLIENTMOVE },
    { EVENT_OBJECT_LOCATIONCHANGE, winevent_hook|wparam|lparam, 0, 0 }, /* MDI frame */
    { EVENT_OBJECT_LOCATIONCHANGE, winevent_hook|wparam|lparam, 0, 0 }, /* MDI child */
    { 0 }
};

static HWND mdi_client;
static WNDPROC old_mdi_client_proc;

static LRESULT WINAPI mdi_client_hook_proc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
{
    struct message msg;

    /* do not log painting messages */
    if (message != WM_PAINT &&
        message != WM_ERASEBKGND &&
        message != WM_NCPAINT &&
        message != WM_NCHITTEST &&
        message != WM_GETTEXT &&
        message != WM_MDIGETACTIVE &&
        message != WM_GETICON &&
        message != WM_DEVICECHANGE)
    {
        trace("mdi client: %p, %04x, %08x, %08lx\n", hwnd, message, wParam, lParam);

        switch (message)
        {
            case WM_WINDOWPOSCHANGING:
            case WM_WINDOWPOSCHANGED:
            {
                WINDOWPOS *winpos = (WINDOWPOS *)lParam;

                trace("%s\n", (message == WM_WINDOWPOSCHANGING) ? "WM_WINDOWPOSCHANGING" : "WM_WINDOWPOSCHANGED");
                trace("%p after %p, x %d, y %d, cx %d, cy %d flags %08x\n",
                      winpos->hwnd, winpos->hwndInsertAfter,
                      winpos->x, winpos->y, winpos->cx, winpos->cy, winpos->flags);

                /* Log only documented flags, win2k uses 0x1000 and 0x2000
                 * in the high word for internal purposes
                 */
                wParam = winpos->flags & 0xffff;
                break;
            }
        }

        msg.message = message;
        msg.flags = sent|wparam|lparam;
        msg.wParam = wParam;
        msg.lParam = lParam;
        add_message(&msg);
    }

    return CallWindowProcA(old_mdi_client_proc, hwnd, message, wParam, lParam);
}

static LRESULT WINAPI mdi_child_wnd_proc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
{
    static long defwndproc_counter = 0;
    LRESULT ret;
    struct message msg;

    /* do not log painting messages */
    if (message != WM_PAINT &&
        message != WM_ERASEBKGND &&
        message != WM_NCPAINT &&
        message != WM_NCHITTEST &&
        message != WM_GETTEXT &&
        message != WM_GETICON &&
        message != WM_DEVICECHANGE)
    {
        trace("mdi child: %p, %04x, %08x, %08lx\n", hwnd, message, wParam, lParam);

        switch (message)
        {
            case WM_WINDOWPOSCHANGING:
            case WM_WINDOWPOSCHANGED:
            {
                WINDOWPOS *winpos = (WINDOWPOS *)lParam;

                trace("%s\n", (message == WM_WINDOWPOSCHANGING) ? "WM_WINDOWPOSCHANGING" : "WM_WINDOWPOSCHANGED");
                trace("%p after %p, x %d, y %d, cx %d, cy %d flags %08x\n",
                      winpos->hwnd, winpos->hwndInsertAfter,
                      winpos->x, winpos->y, winpos->cx, winpos->cy, winpos->flags);

                /* Log only documented flags, win2k uses 0x1000 and 0x2000
                 * in the high word for internal purposes
                 */
                wParam = winpos->flags & 0xffff;
                break;
            }

            case WM_MDIACTIVATE:
            {
                HWND active, client = GetParent(hwnd);

                active = (HWND)SendMessageA(client, WM_MDIGETACTIVE, 0, 0);

                if (hwnd == (HWND)lParam) /* if we are being activated */
                    ok (active == (HWND)lParam, "new active %p != active %p\n", (HWND)lParam, active);
                else
                    ok (active == (HWND)wParam, "old active %p != active %p\n", (HWND)wParam, active);
                break;
            }
        }

        msg.message = message;
        msg.flags = sent|wparam|lparam;
        if (defwndproc_counter) msg.flags |= defwinproc;
        msg.wParam = wParam;
        msg.lParam = lParam;
        add_message(&msg);
    }

    defwndproc_counter++;
    ret = DefMDIChildProcA(hwnd, message, wParam, lParam);
    defwndproc_counter--;

    return ret;
}

static LRESULT WINAPI mdi_frame_wnd_proc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
{
    static long defwndproc_counter = 0;
    LRESULT ret;
    struct message msg;

    /* do not log painting messages */
    if (message != WM_PAINT &&
        message != WM_ERASEBKGND &&
        message != WM_NCPAINT &&
        message != WM_NCHITTEST &&
        message != WM_GETTEXT &&
        message != WM_GETICON &&
        message != WM_DEVICECHANGE)
    {
        trace("mdi frame: %p, %04x, %08x, %08lx\n", hwnd, message, wParam, lParam);

        switch (message)
        {
            case WM_WINDOWPOSCHANGING:
            case WM_WINDOWPOSCHANGED:
            {
                WINDOWPOS *winpos = (WINDOWPOS *)lParam;

                trace("%s\n", (message == WM_WINDOWPOSCHANGING) ? "WM_WINDOWPOSCHANGING" : "WM_WINDOWPOSCHANGED");
                trace("%p after %p, x %d, y %d, cx %d, cy %d flags %08x\n",
                      winpos->hwnd, winpos->hwndInsertAfter,
                      winpos->x, winpos->y, winpos->cx, winpos->cy, winpos->flags);

                /* Log only documented flags, win2k uses 0x1000 and 0x2000
                 * in the high word for internal purposes
                 */
                wParam = winpos->flags & 0xffff;
                break;
            }
        }

        msg.message = message;
        msg.flags = sent|wparam|lparam;
        if (defwndproc_counter) msg.flags |= defwinproc;
        msg.wParam = wParam;
        msg.lParam = lParam;
        add_message(&msg);
    }

    defwndproc_counter++;
    ret = DefFrameProcA(hwnd, mdi_client, message, wParam, lParam);
    defwndproc_counter--;

    return ret;
}

static BOOL mdi_RegisterWindowClasses(void)
{
    WNDCLASSA cls;

    cls.style = 0;
    cls.lpfnWndProc = mdi_frame_wnd_proc;
    cls.cbClsExtra = 0;
    cls.cbWndExtra = 0;
    cls.hInstance = GetModuleHandleA(0);
    cls.hIcon = 0;
    cls.hCursor = LoadCursorA(0, (LPSTR)IDC_ARROW);
    cls.hbrBackground = GetStockObject(WHITE_BRUSH);
    cls.lpszMenuName = NULL;
    cls.lpszClassName = "MDI_frame_class";
    if (!RegisterClassA(&cls)) return FALSE;

    cls.lpfnWndProc = mdi_child_wnd_proc;
    cls.lpszClassName = "MDI_child_class";
    if (!RegisterClassA(&cls)) return FALSE;

    if (!GetClassInfoA(0, "MDIClient", &cls)) assert(0);
    old_mdi_client_proc = cls.lpfnWndProc;
    cls.hInstance = GetModuleHandleA(0);
    cls.lpfnWndProc = mdi_client_hook_proc;
    cls.lpszClassName = "MDI_client_class";
    if (!RegisterClassA(&cls)) assert(0);

    return TRUE;
}

static void test_mdi_messages(void)
{
    MDICREATESTRUCTA mdi_cs;
    CLIENTCREATESTRUCT client_cs;
    HWND mdi_frame, mdi_child, mdi_child2, active_child;
    BOOL zoomed;
    HMENU hMenu = CreateMenu();

    assert(mdi_RegisterWindowClasses());

    flush_sequence();

    trace("creating MDI frame window\n");
    mdi_frame = CreateWindowExA(0, "MDI_frame_class", "MDI frame window",
                                WS_CAPTION | WS_SYSMENU | WS_MINIMIZEBOX |
                                WS_MAXIMIZEBOX | WS_VISIBLE,
                                100, 100, CW_USEDEFAULT, CW_USEDEFAULT,
                                GetDesktopWindow(), hMenu,
                                GetModuleHandleA(0), NULL);
    assert(mdi_frame);
    ok_sequence(WmCreateMDIframeSeq, "Create MDI frame window", TRUE);

    ok(GetActiveWindow() == mdi_frame, "wrong active window %p\n", GetActiveWindow());
    ok(GetFocus() == mdi_frame, "wrong focus window %p\n", GetFocus());

    trace("creating MDI client window\n");
    client_cs.hWindowMenu = 0;
    client_cs.idFirstChild = MDI_FIRST_CHILD_ID;
    mdi_client = CreateWindowExA(0, "MDI_client_class",
                                 NULL,
                                 WS_CHILD | WS_VISIBLE | MDIS_ALLCHILDSTYLES,
                                 0, 0, 0, 0,
                                 mdi_frame, 0, GetModuleHandleA(0), &client_cs);
    assert(mdi_client);
    ok_sequence(WmCreateMDIclientSeq, "Create visible MDI client window", FALSE);

    ok(GetActiveWindow() == mdi_frame, "wrong active window %p\n", GetActiveWindow());
    ok(GetFocus() == mdi_frame, "input focus should be on MDI frame not on %p\n", GetFocus());

    active_child = (HWND)SendMessageA(mdi_client, WM_MDIGETACTIVE, 0, (LPARAM)&zoomed);
    ok(!active_child, "wrong active MDI child %p\n", active_child);
    ok(!zoomed, "wrong zoomed state %d\n", zoomed);

    SetFocus(0);
    flush_sequence();

    trace("creating invisible MDI child window\n");
    mdi_child = CreateWindowExA(WS_EX_MDICHILD, "MDI_child_class", "MDI child",
                                WS_CHILD,
                                0, 0, CW_USEDEFAULT, CW_USEDEFAULT,
                                mdi_client, 0, GetModuleHandleA(0), NULL);
    assert(mdi_child);

    flush_sequence();
    ShowWindow(mdi_child, SW_SHOWNORMAL);
    ok_sequence(WmShowChildSeq, "ShowWindow(SW_SHOWNORMAL) MDI child window", FALSE);

    ok(GetWindowLongA(mdi_child, GWL_STYLE) & WS_VISIBLE, "MDI child should be visible\n");
    ok(IsWindowVisible(mdi_child), "MDI child should be visible\n");

    ok(GetActiveWindow() == mdi_frame, "wrong active window %p\n", GetActiveWindow());
    ok(GetFocus() == 0, "wrong focus window %p\n", GetFocus());

    active_child = (HWND)SendMessageA(mdi_client, WM_MDIGETACTIVE, 0, (LPARAM)&zoomed);
    ok(!active_child, "wrong active MDI child %p\n", active_child);
    ok(!zoomed, "wrong zoomed state %d\n", zoomed);

    ShowWindow(mdi_child, SW_HIDE);
    ok_sequence(WmHideChildSeq, "ShowWindow(SW_HIDE) MDI child window", FALSE);
    flush_sequence();

    ShowWindow(mdi_child, SW_SHOW);
    ok_sequence(WmShowChildSeq, "ShowWindow(SW_SHOW) MDI child window", FALSE);

    ok(GetWindowLongA(mdi_child, GWL_STYLE) & WS_VISIBLE, "MDI child should be visible\n");
    ok(IsWindowVisible(mdi_child), "MDI child should be visible\n");

    ok(GetActiveWindow() == mdi_frame, "wrong active window %p\n", GetActiveWindow());
    ok(GetFocus() == 0, "wrong focus window %p\n", GetFocus());

    active_child = (HWND)SendMessageA(mdi_client, WM_MDIGETACTIVE, 0, (LPARAM)&zoomed);
    ok(!active_child, "wrong active MDI child %p\n", active_child);
    ok(!zoomed, "wrong zoomed state %d\n", zoomed);

    DestroyWindow(mdi_child);
    flush_sequence();

    trace("creating visible MDI child window\n");
    mdi_child = CreateWindowExA(WS_EX_MDICHILD, "MDI_child_class", "MDI child",
                                WS_CHILD | WS_VISIBLE,
                                0, 0, CW_USEDEFAULT, CW_USEDEFAULT,
                                mdi_client, 0, GetModuleHandleA(0), NULL);
    assert(mdi_child);
    ok_sequence(WmCreateMDIchildVisibleSeq, "Create visible MDI child window", FALSE);

    ok(GetWindowLongA(mdi_child, GWL_STYLE) & WS_VISIBLE, "MDI child should be visible\n");
    ok(IsWindowVisible(mdi_child), "MDI child should be visible\n");

    ok(GetActiveWindow() == mdi_frame, "wrong active window %p\n", GetActiveWindow());
    ok(GetFocus() == mdi_child, "wrong focus window %p\n", GetFocus());

    active_child = (HWND)SendMessageA(mdi_client, WM_MDIGETACTIVE, 0, (LPARAM)&zoomed);
    ok(active_child == mdi_child, "wrong active MDI child %p\n", active_child);
    ok(!zoomed, "wrong zoomed state %d\n", zoomed);
    flush_sequence();

    DestroyWindow(mdi_child);
    ok_sequence(WmDestroyMDIchildVisibleSeq, "Destroy visible MDI child window", TRUE);

    ok(GetActiveWindow() == mdi_frame, "wrong active window %p\n", GetActiveWindow());
    ok(GetFocus() == 0, "wrong focus window %p\n", GetFocus());

    /* Win2k: MDI client still returns a just destroyed child as active
     * Win9x: MDI client returns 0
     */
    active_child = (HWND)SendMessageA(mdi_client, WM_MDIGETACTIVE, 0, (LPARAM)&zoomed);
    ok(active_child == mdi_child || /* win2k */
       !active_child, /* win9x */
       "wrong active MDI child %p\n", active_child);
    ok(!zoomed, "wrong zoomed state %d\n", zoomed);

    flush_sequence();

    trace("creating invisible MDI child window\n");
    mdi_child2 = CreateWindowExA(WS_EX_MDICHILD, "MDI_child_class", "MDI child",
                                WS_CHILD,
                                0, 0, CW_USEDEFAULT, CW_USEDEFAULT,
                                mdi_client, 0, GetModuleHandleA(0), NULL);
    assert(mdi_child2);
    ok_sequence(WmCreateMDIchildInvisibleSeq, "Create invisible MDI child window", FALSE);

    ok(!(GetWindowLongA(mdi_child2, GWL_STYLE) & WS_VISIBLE), "MDI child should not be visible\n");
    ok(!IsWindowVisible(mdi_child2), "MDI child should not be visible\n");

    ok(GetActiveWindow() == mdi_frame, "wrong active window %p\n", GetActiveWindow());
    ok(GetFocus() == 0, "wrong focus window %p\n", GetFocus());

    /* Win2k: MDI client still returns a just destroyed child as active
     * Win9x: MDI client returns mdi_child2
     */
    active_child = (HWND)SendMessageA(mdi_client, WM_MDIGETACTIVE, 0, (LPARAM)&zoomed);
    ok(active_child == mdi_child || /* win2k */
       active_child == mdi_child2, /* win9x */
       "wrong active MDI child %p\n", active_child);
    ok(!zoomed, "wrong zoomed state %d\n", zoomed);
    flush_sequence();

    ShowWindow(mdi_child2, SW_MAXIMIZE);
    ok_sequence(WmMaximizeMDIchildInvisibleSeq, "ShowWindow(SW_MAXIMIZE):invisible MDI child", TRUE);

    ok(GetWindowLongA(mdi_child2, GWL_STYLE) & WS_VISIBLE, "MDI child should be visible\n");
    ok(IsWindowVisible(mdi_child2), "MDI child should be visible\n");

    active_child = (HWND)SendMessageA(mdi_client, WM_MDIGETACTIVE, 0, (LPARAM)&zoomed);
    ok(active_child == mdi_child2, "wrong active MDI child %p\n", active_child);
    ok(zoomed, "wrong zoomed state %d\n", zoomed);
    flush_sequence();

    ok(GetActiveWindow() == mdi_frame, "wrong active window %p\n", GetActiveWindow());
    ok(GetFocus() == mdi_child2 || /* win2k */
       GetFocus() == 0, /* win9x */
       "wrong focus window %p\n", GetFocus());

    SetFocus(0);
    flush_sequence();

    ShowWindow(mdi_child2, SW_HIDE);
    ok_sequence(WmHideChildSeq, "ShowWindow(SW_HIDE):MDI child", FALSE);

    ShowWindow(mdi_child2, SW_RESTORE);
    ok_sequence(WmRestoreMDIchildInisibleSeq, "ShowWindow(SW_RESTORE):invisible MDI child", TRUE);
    flush_sequence();

    ok(GetWindowLongA(mdi_child2, GWL_STYLE) & WS_VISIBLE, "MDI child should be visible\n");
    ok(IsWindowVisible(mdi_child2), "MDI child should be visible\n");

    active_child = (HWND)SendMessageA(mdi_client, WM_MDIGETACTIVE, 0, (LPARAM)&zoomed);
    ok(active_child == mdi_child2, "wrong active MDI child %p\n", active_child);
    ok(!zoomed, "wrong zoomed state %d\n", zoomed);
    flush_sequence();

    SetFocus(0);
    flush_sequence();

    ShowWindow(mdi_child2, SW_HIDE);
    ok_sequence(WmHideChildSeq, "ShowWindow(SW_HIDE):MDI child", FALSE);

    ShowWindow(mdi_child2, SW_SHOW);
    ok_sequence(WmShowChildSeq, "ShowWindow(SW_SHOW):MDI child", FALSE);

    ok(GetActiveWindow() == mdi_frame, "wrong active window %p\n", GetActiveWindow());
    ok(GetFocus() == 0, "wrong focus window %p\n", GetFocus());

    ShowWindow(mdi_child2, SW_MAXIMIZE);
    ok_sequence(WmMaximizeMDIchildVisibleSeq, "ShowWindow(SW_MAXIMIZE):MDI child", TRUE);

    ok(GetActiveWindow() == mdi_frame, "wrong active window %p\n", GetActiveWindow());
    ok(GetFocus() == 0, "wrong focus window %p\n", GetFocus());

    ShowWindow(mdi_child2, SW_RESTORE);
    ok_sequence(WmRestoreMDIchildVisibleSeq, "ShowWindow(SW_RESTORE):MDI child", TRUE);

    ok(GetActiveWindow() == mdi_frame, "wrong active window %p\n", GetActiveWindow());
    ok(GetFocus() == 0, "wrong focus window %p\n", GetFocus());

    SetFocus(0);
    flush_sequence();

    ShowWindow(mdi_child2, SW_HIDE);
    ok_sequence(WmHideChildSeq, "ShowWindow(SW_HIDE):MDI child", FALSE);

    ok(GetActiveWindow() == mdi_frame, "wrong active window %p\n", GetActiveWindow());
    ok(GetFocus() == 0, "wrong focus window %p\n", GetFocus());

    DestroyWindow(mdi_child2);
    ok_sequence(WmDestroyMDIchildInvisibleSeq, "Destroy invisible MDI child window", FALSE);

    ok(GetActiveWindow() == mdi_frame, "wrong active window %p\n", GetActiveWindow());
    ok(GetFocus() == 0, "wrong focus window %p\n", GetFocus());

    /* test for maximized MDI children */
    trace("creating maximized visible MDI child window 1\n");
    mdi_child = CreateWindowExA(WS_EX_MDICHILD, "MDI_child_class", "MDI child",
                                WS_CHILD | WS_VISIBLE | WS_MAXIMIZEBOX | WS_MAXIMIZE,
                                0, 0, CW_USEDEFAULT, CW_USEDEFAULT,
                                mdi_client, 0, GetModuleHandleA(0), NULL);
    assert(mdi_child);
    ok_sequence(WmCreateMDIchildVisibleMaxSeq1, "Create maximized visible 1st MDI child window", TRUE);
    ok(IsZoomed(mdi_child), "1st MDI child should be maximized\n");

    ok(GetActiveWindow() == mdi_frame, "wrong active window %p\n", GetActiveWindow());
    ok(GetFocus() == mdi_child || /* win2k */
       GetFocus() == 0, /* win9x */
       "wrong focus window %p\n", GetFocus());

    active_child = (HWND)SendMessageA(mdi_client, WM_MDIGETACTIVE, 0, (LPARAM)&zoomed);
    ok(active_child == mdi_child, "wrong active MDI child %p\n", active_child);
    ok(zoomed, "wrong zoomed state %d\n", zoomed);
    flush_sequence();

    trace("creating maximized visible MDI child window 2\n");
    mdi_child2 = CreateWindowExA(WS_EX_MDICHILD, "MDI_child_class", "MDI child",
                                WS_CHILD | WS_VISIBLE | WS_MAXIMIZEBOX | WS_MAXIMIZE,
                                0, 0, CW_USEDEFAULT, CW_USEDEFAULT,
                                mdi_client, 0, GetModuleHandleA(0), NULL);
    assert(mdi_child2);
    ok_sequence(WmCreateMDIchildVisibleMaxSeq2, "Create maximized visible 2nd MDI child 2 window", TRUE);
    ok(IsZoomed(mdi_child2), "2nd MDI child should be maximized\n");
    ok(!IsZoomed(mdi_child), "1st MDI child should NOT be maximized\n");

    ok(GetActiveWindow() == mdi_frame, "wrong active window %p\n", GetActiveWindow());
    ok(GetFocus() == mdi_child2, "wrong focus window %p\n", GetFocus());

    active_child = (HWND)SendMessageA(mdi_client, WM_MDIGETACTIVE, 0, (LPARAM)&zoomed);
    ok(active_child == mdi_child2, "wrong active MDI child %p\n", active_child);
    ok(zoomed, "wrong zoomed state %d\n", zoomed);
    flush_sequence();

    trace("destroying maximized visible MDI child window 2\n");
    DestroyWindow(mdi_child2);
    ok_sequence(WmDestroyMDIchildVisibleSeq, "Destroy visible MDI child window", TRUE);

    ok(!IsZoomed(mdi_child), "1st MDI child should NOT be maximized\n");

    ok(GetActiveWindow() == mdi_frame, "wrong active window %p\n", GetActiveWindow());
    ok(GetFocus() == 0, "wrong focus window %p\n", GetFocus());

    /* Win2k: MDI client still returns a just destroyed child as active
     * Win9x: MDI client returns 0
     */
    active_child = (HWND)SendMessageA(mdi_client, WM_MDIGETACTIVE, 0, (LPARAM)&zoomed);
    ok(active_child == mdi_child2 || /* win2k */
       !active_child, /* win9x */
       "wrong active MDI child %p\n", active_child);
    flush_sequence();

    ShowWindow(mdi_child, SW_MAXIMIZE);
    ok(IsZoomed(mdi_child), "1st MDI child should be maximized\n");
    flush_sequence();

    ok(GetActiveWindow() == mdi_frame, "wrong active window %p\n", GetActiveWindow());
    ok(GetFocus() == mdi_child, "wrong focus window %p\n", GetFocus());

    trace("re-creating maximized visible MDI child window 2\n");
    mdi_child2 = CreateWindowExA(WS_EX_MDICHILD, "MDI_child_class", "MDI child",
                                WS_CHILD | WS_VISIBLE | WS_MAXIMIZEBOX | WS_MAXIMIZE,
                                0, 0, CW_USEDEFAULT, CW_USEDEFAULT,
                                mdi_client, 0, GetModuleHandleA(0), NULL);
    assert(mdi_child2);
    ok_sequence(WmCreateMDIchildVisibleMaxSeq2, "Create maximized visible 2nd MDI child 2 window", TRUE);
    ok(IsZoomed(mdi_child2), "2nd MDI child should be maximized\n");
    ok(!IsZoomed(mdi_child), "1st MDI child should NOT be maximized\n");

    ok(GetActiveWindow() == mdi_frame, "wrong active window %p\n", GetActiveWindow());
    ok(GetFocus() == mdi_child2, "wrong focus window %p\n", GetFocus());

    active_child = (HWND)SendMessageA(mdi_client, WM_MDIGETACTIVE, 0, (LPARAM)&zoomed);
    ok(active_child == mdi_child2, "wrong active MDI child %p\n", active_child);
    ok(zoomed, "wrong zoomed state %d\n", zoomed);
    flush_sequence();

    SendMessageA(mdi_child2, WM_SYSCOMMAND, SC_CLOSE, 0);
    ok_sequence(WmDestroyMDIchildVisibleMaxSeq2, "WM_SYSCOMMAND/SC_CLOSE on a visible maximized MDI child window", TRUE);
    ok(!IsWindow(mdi_child2), "MDI child 2 should be destroyed\n");

    ok(IsZoomed(mdi_child), "1st MDI child should be maximized\n");
    ok(GetActiveWindow() == mdi_frame, "wrong active window %p\n", GetActiveWindow());
    ok(GetFocus() == mdi_child, "wrong focus window %p\n", GetFocus());

    active_child = (HWND)SendMessageA(mdi_client, WM_MDIGETACTIVE, 0, (LPARAM)&zoomed);
    ok(active_child == mdi_child, "wrong active MDI child %p\n", active_child);
    ok(zoomed, "wrong zoomed state %d\n", zoomed);
    flush_sequence();

    DestroyWindow(mdi_child);
    ok_sequence(WmDestroyMDIchildVisibleSeq, "Destroy visible MDI child window", TRUE);

    ok(GetActiveWindow() == mdi_frame, "wrong active window %p\n", GetActiveWindow());
    ok(GetFocus() == 0, "wrong focus window %p\n", GetFocus());

    /* Win2k: MDI client still returns a just destroyed child as active
     * Win9x: MDI client returns 0
     */
    active_child = (HWND)SendMessageA(mdi_client, WM_MDIGETACTIVE, 0, (LPARAM)&zoomed);
    ok(active_child == mdi_child || /* win2k */
       !active_child, /* win9x */
       "wrong active MDI child %p\n", active_child);
    flush_sequence();
    /* end of test for maximized MDI children */

    mdi_cs.szClass = "MDI_child_Class";
    mdi_cs.szTitle = "MDI child";
    mdi_cs.hOwner = GetModuleHandleA(0);
    mdi_cs.x = 0;
    mdi_cs.y = 0;
    mdi_cs.cx = CW_USEDEFAULT;
    mdi_cs.cy = CW_USEDEFAULT;
    mdi_cs.style = WS_CHILD | WS_SYSMENU | WS_VISIBLE | WS_MAXIMIZEBOX | WS_MAXIMIZE;
    mdi_cs.lParam = 0;
    mdi_child = (HWND)SendMessageA(mdi_client, WM_MDICREATE, 0, (LPARAM)&mdi_cs);
    ok(mdi_child != 0, "MDI child creation failed\n");
    ok_sequence(WmCreateMDIchildVisibleMaxSeq3, "WM_MDICREATE for maximized visible MDI child window", TRUE);

    ok(GetMenuItemID(hMenu, GetMenuItemCount(hMenu) - 1) == SC_CLOSE, "SC_CLOSE menu item not found\n");

    active_child = (HWND)SendMessageA(mdi_client, WM_MDIGETACTIVE, 0, (LPARAM)&zoomed);
    ok(active_child == mdi_child, "wrong active MDI child %p\n", active_child);

    ok(IsZoomed(mdi_child), "MDI child should be maximized\n");
    ok(GetActiveWindow() == mdi_frame, "wrong active window %p\n", GetActiveWindow());
    ok(GetFocus() == mdi_child, "wrong focus window %p\n", GetFocus());

    active_child = (HWND)SendMessageA(mdi_client, WM_MDIGETACTIVE, 0, (LPARAM)&zoomed);
    ok(active_child == mdi_child, "wrong active MDI child %p\n", active_child);
    ok(zoomed, "wrong zoomed state %d\n", zoomed);
    flush_sequence();

    SendMessageA(mdi_client, WM_MDIDESTROY, (WPARAM)mdi_child, 0);
    ok_sequence(WmDestroyMDIchildVisibleMaxSeq1, "Destroy visible maximized MDI child window", TRUE);

    ok(!IsWindow(mdi_child), "MDI child should be destroyed\n");
    active_child = (HWND)SendMessageA(mdi_client, WM_MDIGETACTIVE, 0, (LPARAM)&zoomed);
    ok(!active_child, "wrong active MDI child %p\n", active_child);

    SetFocus(0);
    flush_sequence();

    DestroyWindow(mdi_client);
    ok_sequence(WmDestroyMDIclientSeq, "Destroy MDI client window", FALSE);

    DestroyWindow(mdi_frame);
    ok_sequence(WmDestroyMDIframeSeq, "Destroy MDI frame window", FALSE);
}
/************************* End of MDI test **********************************/

static void test_WM_SETREDRAW(HWND hwnd)
{
    DWORD style = GetWindowLongA(hwnd, GWL_STYLE);

    flush_sequence();

    SendMessageA(hwnd, WM_SETREDRAW, FALSE, 0);
    ok_sequence(WmSetRedrawFalseSeq, "SetRedraw:FALSE", FALSE);

    ok(!(GetWindowLongA(hwnd, GWL_STYLE) & WS_VISIBLE), "WS_VISIBLE should NOT be set\n");
    ok(!IsWindowVisible(hwnd), "IsWindowVisible() should return FALSE\n");

    flush_sequence();
    SendMessageA(hwnd, WM_SETREDRAW, TRUE, 0);
    ok_sequence(WmSetRedrawTrueSeq, "SetRedraw:TRUE", FALSE);

    ok(GetWindowLongA(hwnd, GWL_STYLE) & WS_VISIBLE, "WS_VISIBLE should be set\n");
    ok(IsWindowVisible(hwnd), "IsWindowVisible() should return TRUE\n");

    /* restore original WS_VISIBLE state */
    SetWindowLongA(hwnd, GWL_STYLE, style);

    flush_sequence();
}

static INT_PTR CALLBACK TestModalDlgProcA(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
{
    struct message msg;

    trace("dialog: %p, %04x, %08x, %08lx\n", hwnd, message, wParam, lParam);

    /* explicitly ignore WM_GETICON message */
    if (message == WM_GETICON) return 0;

    switch (message)
    {
        case WM_WINDOWPOSCHANGING:
        case WM_WINDOWPOSCHANGED:
        {
            WINDOWPOS *winpos = (WINDOWPOS *)lParam;

            trace("%s\n", (message == WM_WINDOWPOSCHANGING) ? "WM_WINDOWPOSCHANGING" : "WM_WINDOWPOSCHANGED");
            trace("%p after %p, x %d, y %d, cx %d, cy %d flags %08x\n",
                  winpos->hwnd, winpos->hwndInsertAfter,
                  winpos->x, winpos->y, winpos->cx, winpos->cy, winpos->flags);

            /* Log only documented flags, win2k uses 0x1000 and 0x2000
             * in the high word for internal purposes
             */
            wParam = winpos->flags & 0xffff;
            break;
        }
    }

    msg.message = message;
    msg.flags = sent|wparam|lparam;
    msg.wParam = wParam;
    msg.lParam = lParam;
    add_message(&msg);

    if (message == WM_INITDIALOG) SetTimer( hwnd, 1, 100, NULL );
    if (message == WM_TIMER) EndDialog( hwnd, 0 );
    return 0;
}

static void test_hv_scroll_1(HWND hwnd, INT ctl, DWORD clear, DWORD set, INT min, INT max)
{
    DWORD style, exstyle;
    INT xmin, xmax;
    BOOL ret;

    exstyle = GetWindowLongA(hwnd, GWL_EXSTYLE);
    style = GetWindowLongA(hwnd, GWL_STYLE);
    /* do not be confused by WS_DLGFRAME set */
    if ((style & WS_CAPTION) == WS_CAPTION) style &= ~WS_CAPTION;

    if (clear) ok(style & clear, "style %08lx should be set\n", clear);
    if (set) ok(!(style & set), "style %08lx should not be set\n", set);

    ret = SetScrollRange(hwnd, ctl, min, max, FALSE);
    ok( ret, "SetScrollRange(%d) error %ld\n", ctl, GetLastError());
    if ((style & (WS_DLGFRAME | WS_BORDER | WS_THICKFRAME)) || (exstyle & WS_EX_DLGMODALFRAME))
        ok_sequence(WmSetScrollRangeHV_NC_Seq, "SetScrollRange(SB_HORZ/SB_VERT) NC", FALSE);
    else
        ok_sequence(WmSetScrollRangeHVSeq, "SetScrollRange(SB_HORZ/SB_VERT)", FALSE);

    style = GetWindowLongA(hwnd, GWL_STYLE);
    if (set) ok(style & set, "style %08lx should be set\n", set);
    if (clear) ok(!(style & clear), "style %08lx should not be set\n", clear);

    /* a subsequent call should do nothing */
    ret = SetScrollRange(hwnd, ctl, min, max, FALSE);
    ok( ret, "SetScrollRange(%d) error %ld\n", ctl, GetLastError());
    ok_sequence(WmEmptySeq, "SetScrollRange(SB_HORZ/SB_VERT) empty sequence", FALSE);

    xmin = 0xdeadbeef;
    xmax = 0xdeadbeef;
    trace("Ignore GetScrollRange error below if you are on Win9x\n");
    ret = GetScrollRange(hwnd, ctl, &xmin, &xmax);
    ok( ret, "GetScrollRange(%d) error %ld\n", ctl, GetLastError());
    ok_sequence(WmEmptySeq, "GetScrollRange(SB_HORZ/SB_VERT) empty sequence", FALSE);
    ok(xmin == min, "unexpected min scroll value %d\n", xmin);
    ok(xmax == max, "unexpected max scroll value %d\n", xmax);
}

static void test_hv_scroll_2(HWND hwnd, INT ctl, DWORD clear, DWORD set, INT min, INT max)
{
    DWORD style, exstyle;
    SCROLLINFO si;
    BOOL ret;

    exstyle = GetWindowLongA(hwnd, GWL_EXSTYLE);
    style = GetWindowLongA(hwnd, GWL_STYLE);
    /* do not be confused by WS_DLGFRAME set */
    if ((style & WS_CAPTION) == WS_CAPTION) style &= ~WS_CAPTION;

    if (clear) ok(style & clear, "style %08lx should be set\n", clear);
    if (set) ok(!(style & set), "style %08lx should not be set\n", set);

    si.cbSize = sizeof(si);
    si.fMask = SIF_RANGE;
    si.nMin = min;
    si.nMax = max;
    SetScrollInfo(hwnd, ctl, &si, TRUE);
    if ((style & (WS_DLGFRAME | WS_BORDER | WS_THICKFRAME)) || (exstyle & WS_EX_DLGMODALFRAME))
        ok_sequence(WmSetScrollRangeHV_NC_Seq, "SetScrollInfo(SB_HORZ/SB_VERT) NC", FALSE);
    else
        ok_sequence(WmSetScrollRangeHVSeq, "SetScrollInfo(SB_HORZ/SB_VERT)", FALSE);

    style = GetWindowLongA(hwnd, GWL_STYLE);
    if (set) ok(style & set, "style %08lx should be set\n", set);
    if (clear) ok(!(style & clear), "style %08lx should not be set\n", clear);

    /* a subsequent call should do nothing */
    SetScrollInfo(hwnd, ctl, &si, TRUE);
    if (style & WS_HSCROLL)
        ok_sequence(WmSetScrollRangeHSeq_empty, "SetScrollInfo(SB_HORZ/SB_VERT) empty sequence", FALSE);
    else if (style & WS_VSCROLL)
        ok_sequence(WmSetScrollRangeVSeq_empty, "SetScrollInfo(SB_HORZ/SB_VERT) empty sequence", FALSE);
    else
        ok_sequence(WmEmptySeq, "SetScrollInfo(SB_HORZ/SB_VERT) empty sequence", FALSE);

    si.fMask = SIF_PAGE;
    si.nPage = 5;
    SetScrollInfo(hwnd, ctl, &si, FALSE);
    ok_sequence(WmEmptySeq, "SetScrollInfo(SB_HORZ/SB_VERT) empty sequence", FALSE);

    si.fMask = SIF_POS;
    si.nPos = max - 1;
    SetScrollInfo(hwnd, ctl, &si, FALSE);
    ok_sequence(WmEmptySeq, "SetScrollInfo(SB_HORZ/SB_VERT) empty sequence", FALSE);

    si.fMask = SIF_RANGE;
    si.nMin = 0xdeadbeef;
    si.nMax = 0xdeadbeef;
    ret = GetScrollInfo(hwnd, ctl, &si);
    ok( ret, "GetScrollInfo error %ld\n", GetLastError());
    ok_sequence(WmEmptySeq, "GetScrollRange(SB_HORZ/SB_VERT) empty sequence", FALSE);
    ok(si.nMin == min, "unexpected min scroll value %d\n", si.nMin);
    ok(si.nMax == max, "unexpected max scroll value %d\n", si.nMax);
}

/* Win9x sends WM_USER+xxx while and NT versions send SBM_xxx messages */
static void test_scroll_messages(HWND hwnd)
{
    SCROLLINFO si;
    INT min, max;
    BOOL ret;

    min = 0xdeadbeef;
    max = 0xdeadbeef;
    ret = GetScrollRange(hwnd, SB_CTL, &min, &max);
    ok( ret, "GetScrollRange error %ld\n", GetLastError());
    if (sequence->message != WmGetScrollRangeSeq[0].message)
        trace("GetScrollRange(SB_CTL) generated unknown message %04x\n", sequence->message);
    /* values of min and max are undefined */
    flush_sequence();

    ret = SetScrollRange(hwnd, SB_CTL, 10, 150, FALSE);
    ok( ret, "SetScrollRange error %ld\n", GetLastError());
    if (sequence->message != WmSetScrollRangeSeq[0].message)
        trace("SetScrollRange(SB_CTL) generated unknown message %04x\n", sequence->message);
    flush_sequence();

    min = 0xdeadbeef;
    max = 0xdeadbeef;
    ret = GetScrollRange(hwnd, SB_CTL, &min, &max);
    ok( ret, "GetScrollRange error %ld\n", GetLastError());
    if (sequence->message != WmGetScrollRangeSeq[0].message)
        trace("GetScrollRange(SB_CTL) generated unknown message %04x\n", sequence->message);
    /* values of min and max are undefined */
    flush_sequence();

    si.cbSize = sizeof(si);
    si.fMask = SIF_RANGE;
    si.nMin = 20;
    si.nMax = 160;
    SetScrollInfo(hwnd, SB_CTL, &si, FALSE);
    if (sequence->message != WmSetScrollRangeSeq[0].message)
        trace("SetScrollInfo(SB_CTL) generated unknown message %04x\n", sequence->message);
    flush_sequence();

    si.fMask = SIF_PAGE;
    si.nPage = 10;
    SetScrollInfo(hwnd, SB_CTL, &si, FALSE);
    if (sequence->message != WmSetScrollRangeSeq[0].message)
        trace("SetScrollInfo(SB_CTL) generated unknown message %04x\n", sequence->message);
    flush_sequence();

    si.fMask = SIF_POS;
    si.nPos = 20;
    SetScrollInfo(hwnd, SB_CTL, &si, FALSE);
    if (sequence->message != WmSetScrollRangeSeq[0].message)
        trace("SetScrollInfo(SB_CTL) generated unknown message %04x\n", sequence->message);
    flush_sequence();

    si.fMask = SIF_RANGE;
    si.nMin = 0xdeadbeef;
    si.nMax = 0xdeadbeef;
    ret = GetScrollInfo(hwnd, SB_CTL, &si);
    ok( ret, "GetScrollInfo error %ld\n", GetLastError());
    if (sequence->message != WmGetScrollInfoSeq[0].message)
        trace("GetScrollInfo(SB_CTL) generated unknown message %04x\n", sequence->message);
    /* values of min and max are undefined */
    flush_sequence();

    /* set WS_HSCROLL */
    test_hv_scroll_1(hwnd, SB_HORZ, 0, WS_HSCROLL, 10, 150);
    /* clear WS_HSCROLL */
    test_hv_scroll_1(hwnd, SB_HORZ, WS_HSCROLL, 0, 0, 0);

    /* set WS_HSCROLL */
    test_hv_scroll_2(hwnd, SB_HORZ, 0, WS_HSCROLL, 10, 150);
    /* clear WS_HSCROLL */
    test_hv_scroll_2(hwnd, SB_HORZ, WS_HSCROLL, 0, 0, 0);

    /* set WS_VSCROLL */
    test_hv_scroll_1(hwnd, SB_VERT, 0, WS_VSCROLL, 10, 150);
    /* clear WS_VSCROLL */
    test_hv_scroll_1(hwnd, SB_VERT, WS_VSCROLL, 0, 0, 0);

    /* set WS_VSCROLL */
    test_hv_scroll_2(hwnd, SB_VERT, 0, WS_VSCROLL, 10, 150);
    /* clear WS_VSCROLL */
    test_hv_scroll_2(hwnd, SB_VERT, WS_VSCROLL, 0, 0, 0);
}

static void test_showwindow(void)
{
    HWND hwnd, hchild;

    hwnd = CreateWindowExA(0, "TestWindowClass", "Test overlapped", WS_OVERLAPPEDWINDOW,
                           100, 100, 200, 200, 0, 0, 0, NULL);
    ok (hwnd != 0, "Failed to create overlapped window\n");
    hchild = CreateWindowExA(0, "TestWindowClass", "Test child", WS_CHILD,
                             0, 0, 10, 10, hwnd, 0, 0, NULL);
    ok (hchild != 0, "Failed to create child\n");
    flush_sequence();

    /* ShowWindow( SW_SHOWNA) for invisible top level window */
    trace("calling ShowWindow( SW_SHOWNA) for invisible top level window\n");
    ok( ShowWindow(hwnd, SW_SHOWNA) == FALSE, "ShowWindow: window was visible\n" );
    ok_sequence(WmSHOWNATopInvisible, "ShowWindow(SW_SHOWNA) on invisible top level window", TRUE);
    trace("done\n");

    /* ShowWindow( SW_SHOWNA) for now visible top level window */
    trace("calling ShowWindow( SW_SHOWNA) for now visible top level window\n");
    ok( ShowWindow(hwnd, SW_SHOWNA) != FALSE, "ShowWindow: window was invisible\n" );
    ok_sequence(WmSHOWNATopVisible, "ShowWindow(SW_SHOWNA) on visible top level window", FALSE);
    trace("done\n");
    /* back to invisible */
    ShowWindow(hchild, SW_HIDE);
    ShowWindow(hwnd, SW_HIDE);
    flush_sequence();
    /* ShowWindow(SW_SHOWNA) with child and parent invisible */ 
    trace("calling ShowWindow( SW_SHOWNA) for invisible child with invisible parent\n");
    ok( ShowWindow(hchild, SW_SHOWNA) == FALSE, "ShowWindow: window was visible\n" );
    ok_sequence(WmSHOWNAChildInvisParInvis, "ShowWindow(SW_SHOWNA) invisible child and parent", TRUE);
    trace("done\n");
    /* ShowWindow(SW_SHOWNA) with child visible and parent invisible */ 
    ok( ShowWindow(hchild, SW_SHOW) != FALSE, "ShowWindow: window was invisible\n" );
    flush_sequence();
    trace("calling ShowWindow( SW_SHOWNA) for the visible child and invisible parent\n");
    ok( ShowWindow(hchild, SW_SHOWNA) != FALSE, "ShowWindow: window was invisible\n" );
    ok_sequence(WmSHOWNAChildVisParInvis, "ShowWindow(SW_SHOWNA) visible child and invisible parent", TRUE);
    trace("done\n");
    /* ShowWindow(SW_SHOWNA) with child visible and parent visible */
    ShowWindow( hwnd, SW_SHOW);
    flush_sequence();
    trace("calling ShowWindow( SW_SHOWNA) for the visible child and parent\n");
    ok( ShowWindow(hchild, SW_SHOWNA) != FALSE, "ShowWindow: window was invisible\n" );
    ok_sequence(WmSHOWNAChildVisParVis, "ShowWindow(SW_SHOWNA) for the visible child and parent", FALSE);
    trace("done\n");

    /* ShowWindow(SW_SHOWNA) with child invisible and parent visible */
    ShowWindow( hchild, SW_HIDE);
    flush_sequence();
    trace("calling ShowWindow( SW_SHOWNA) for the invisible child and visible parent\n");
    ok( ShowWindow(hchild, SW_SHOWNA) == FALSE, "ShowWindow: window was visible\n" );
    ok_sequence(WmSHOWNAChildInvisParVis, "ShowWindow(SW_SHOWNA) for the invisible child and visible parent", FALSE);
    trace("done\n");

    SetCapture(hchild);
    ok(GetCapture() == hchild, "wrong capture window %p\n", GetCapture());
    DestroyWindow(hchild);
    ok(!GetCapture(), "wrong capture window %p\n", GetCapture());

    DestroyWindow(hwnd);
    flush_sequence();
}

static void test_sys_menu(HWND hwnd)
{
    HMENU hmenu;
    UINT state;

    /* test existing window without CS_NOCLOSE style */
    hmenu = GetSystemMenu(hwnd, FALSE);
    ok(hmenu != 0, "GetSystemMenu error %ld\n", GetLastError());

    state = GetMenuState(hmenu, SC_CLOSE, MF_BYCOMMAND);
    ok(state != 0xffffffff, "wrong SC_CLOSE state %x\n", state);
    ok(!(state & (MF_DISABLED | MF_GRAYED)), "wrong SC_CLOSE state %x\n", state);

    EnableMenuItem(hmenu, SC_CLOSE, MF_BYCOMMAND | MF_GRAYED);
    ok_sequence(WmEmptySeq, "WmEnableMenuItem", FALSE);

    state = GetMenuState(hmenu, SC_CLOSE, MF_BYCOMMAND);
    ok(state != 0xffffffff, "wrong SC_CLOSE state %x\n", state);
    ok((state & (MF_DISABLED | MF_GRAYED)) == MF_GRAYED, "wrong SC_CLOSE state %x\n", state);

    EnableMenuItem(hmenu, SC_CLOSE, 0);
    ok_sequence(WmEmptySeq, "WmEnableMenuItem", FALSE);

    state = GetMenuState(hmenu, SC_CLOSE, MF_BYCOMMAND);
    ok(state != 0xffffffff, "wrong SC_CLOSE state %x\n", state);
    ok(!(state & (MF_DISABLED | MF_GRAYED)), "wrong SC_CLOSE state %x\n", state);

    /* test new window with CS_NOCLOSE style */
    hwnd = CreateWindowExA(0, "NoCloseWindowClass", NULL, WS_OVERLAPPEDWINDOW,
                           100, 100, 200, 200, 0, 0, 0, NULL);
    ok (hwnd != 0, "Failed to create overlapped window\n");

    hmenu = GetSystemMenu(hwnd, FALSE);
    ok(hmenu != 0, "GetSystemMenu error %ld\n", GetLastError());

    state = GetMenuState(hmenu, SC_CLOSE, MF_BYCOMMAND);
    ok(state == 0xffffffff, "wrong SC_CLOSE state %x\n", state);

    DestroyWindow(hwnd);
}

/* test if we receive the right sequence of messages */
static void test_messages(void)
{
    HWND hwnd, hparent, hchild;
    HWND hchild2, hbutton;
    HMENU hmenu;
    MSG msg;
    DWORD ret;

    flush_sequence();

    hwnd = CreateWindowExA(0, "TestWindowClass", "Test overlapped", WS_OVERLAPPEDWINDOW,
                           100, 100, 200, 200, 0, 0, 0, NULL);
    ok (hwnd != 0, "Failed to create overlapped window\n");
    ok_sequence(WmCreateOverlappedSeq, "CreateWindow:overlapped", FALSE);

    /* test ShowWindow(SW_HIDE) on a newly created invisible window */
    ok( ShowWindow(hwnd, SW_HIDE) == FALSE, "ShowWindow: window was visible\n" );
    ok_sequence(WmEmptySeq, "ShowWindow(SW_HIDE):overlapped, invisible", FALSE);

    /* test WM_SETREDRAW on a not visible top level window */
    test_WM_SETREDRAW(hwnd);

    SetWindowPos(hwnd, 0,0,0,0,0, SWP_SHOWWINDOW|SWP_NOSIZE|SWP_NOMOVE);
    ok_sequence(WmSWP_ShowOverlappedSeq, "SetWindowPos:SWP_SHOWWINDOW:overlapped", FALSE);
    ok(IsWindowVisible(hwnd), "window should be visible at this point\n");

    ok(GetActiveWindow() == hwnd, "window should be active\n");
    ok(GetFocus() == hwnd, "window should have input focus\n");
    ShowWindow(hwnd, SW_HIDE);
    ok_sequence(WmHideOverlappedSeq, "ShowWindow(SW_HIDE):overlapped", TRUE);

    ShowWindow(hwnd, SW_SHOW);
    ok_sequence(WmShowOverlappedSeq, "ShowWindow(SW_SHOW):overlapped", TRUE);

    ShowWindow(hwnd, SW_HIDE);
    ok_sequence(WmHideOverlappedSeq, "ShowWindow(SW_HIDE):overlapped", TRUE);

    ShowWindow(hwnd, SW_SHOWMAXIMIZED);
    ok_sequence(WmShowMaxOverlappedSeq, "ShowWindow(SW_SHOWMAXIMIZED):overlapped", TRUE);

    ShowWindow(hwnd, SW_RESTORE);
    /* FIXME: add ok_sequence() here */
    flush_sequence();

    ShowWindow(hwnd, SW_SHOW);
    ok_sequence(WmEmptySeq, "ShowWindow(SW_SHOW):overlapped already visible", FALSE);

    ok(GetActiveWindow() == hwnd, "window should be active\n");
    ok(GetFocus() == hwnd, "window should have input focus\n");
    SetWindowPos(hwnd, 0,0,0,0,0, SWP_HIDEWINDOW|SWP_NOSIZE|SWP_NOMOVE);
    ok_sequence(WmSWP_HideOverlappedSeq, "SetWindowPos:SWP_HIDEWINDOW:overlapped", FALSE);
    ok(!IsWindowVisible(hwnd), "window should not be visible at this point\n");
    ok(GetActiveWindow() == hwnd, "window should still be active\n");

    /* test WM_SETREDRAW on a visible top level window */
    ShowWindow(hwnd, SW_SHOW);
    test_WM_SETREDRAW(hwnd);

    trace("testing scroll APIs on a visible top level window %p\n", hwnd);
    test_scroll_messages(hwnd);

    /* test resizing and moving */
    SetWindowPos( hwnd, 0, 0, 0, 300, 300, SWP_NOMOVE|SWP_NOZORDER|SWP_NOACTIVATE );
    ok_sequence(WmSWP_ResizeSeq, "SetWindowPos:Resize", FALSE );
    SetWindowPos( hwnd, 0, 200, 200, 0, 0, SWP_NOSIZE|SWP_NOZORDER|SWP_NOACTIVATE );
    ok_sequence(WmSWP_MoveSeq, "SetWindowPos:Move", FALSE );

    /* popups don't get WM_GETMINMAXINFO */
    SetWindowLongW( hwnd, GWL_STYLE, WS_VISIBLE|WS_POPUP );
    SetWindowPos( hwnd, 0, 0, 0, 0, 0, SWP_NOZORDER|SWP_NOACTIVATE|SWP_NOSIZE|SWP_NOMOVE|SWP_FRAMECHANGED);
    flush_sequence();
    SetWindowPos( hwnd, 0, 0, 0, 200, 200, SWP_NOMOVE|SWP_NOZORDER|SWP_NOACTIVATE );
    ok_sequence(WmSWP_ResizePopupSeq, "SetWindowPos:ResizePopup", FALSE );

    test_sys_menu(hwnd);

    flush_sequence();
    DestroyWindow(hwnd);
    ok_sequence(WmDestroyOverlappedSeq, "DestroyWindow:overlapped", FALSE);

    hparent = CreateWindowExA(0, "TestParentClass", "Test parent", WS_OVERLAPPEDWINDOW | WS_VISIBLE,
                              100, 100, 200, 200, 0, 0, 0, NULL);
    ok (hparent != 0, "Failed to create parent window\n");
    flush_sequence();

    hchild = CreateWindowExA(0, "TestWindowClass", "Test child", WS_CHILD | WS_MAXIMIZE,
                             0, 0, 10, 10, hparent, 0, 0, NULL);
    ok (hchild != 0, "Failed to create child window\n");
    ok_sequence(WmCreateMaximizedChildSeq, "CreateWindow:maximized child", TRUE);
    DestroyWindow(hchild);
    flush_sequence();

    /* visible child window with a caption */
    hchild = CreateWindowExA(0, "TestWindowClass", "Test child",
                             WS_CHILD | WS_VISIBLE | WS_CAPTION,
                             0, 0, 10, 10, hparent, 0, 0, NULL);
    ok (hchild != 0, "Failed to create child window\n");
    ok_sequence(WmCreateVisibleChildSeq, "CreateWindow:visible child", FALSE);

    trace("testing scroll APIs on a visible child window %p\n", hchild);
    test_scroll_messages(hchild);

    SetWindowPos(hchild, 0,0,0,0,0, SWP_SHOWWINDOW|SWP_NOSIZE|SWP_NOMOVE);
    ok_sequence(WmShowChildSeq_4, "SetWindowPos(SWP_SHOWWINDOW):child with a caption", FALSE);

    DestroyWindow(hchild);
    flush_sequence();

    hchild = CreateWindowExA(0, "TestWindowClass", "Test child", WS_CHILD,
                             0, 0, 10, 10, hparent, 0, 0, NULL);
    ok (hchild != 0, "Failed to create child window\n");
    ok_sequence(WmCreateChildSeq, "CreateWindow:child", FALSE);
    
    hchild2 = CreateWindowExA(0, "SimpleWindowClass", "Test child2", WS_CHILD,
                               100, 100, 50, 50, hparent, 0, 0, NULL);
    ok (hchild2 != 0, "Failed to create child2 window\n");
    flush_sequence();

    hbutton = CreateWindowExA(0, "TestWindowClass", "Test button", WS_CHILD,
                              0, 100, 50, 50, hchild, 0, 0, NULL);
    ok (hbutton != 0, "Failed to create button window\n");

    /* test WM_SETREDRAW on a not visible child window */
    test_WM_SETREDRAW(hchild);

    ShowWindow(hchild, SW_SHOW);
    ok_sequence(WmShowChildSeq, "ShowWindow(SW_SHOW):child", FALSE);

    ShowWindow(hchild, SW_HIDE);
    ok_sequence(WmHideChildSeq, "ShowWindow(SW_HIDE):child", FALSE);

    ShowWindow(hchild, SW_SHOW);
    ok_sequence(WmShowChildSeq, "ShowWindow(SW_SHOW):child", FALSE);

    /* test WM_SETREDRAW on a visible child window */
    test_WM_SETREDRAW(hchild);

    MoveWindow(hchild, 10, 10, 20, 20, TRUE);
    ok_sequence(WmResizingChildWithMoveWindowSeq, "MoveWindow:child", FALSE);

    ShowWindow(hchild, SW_HIDE);
    flush_sequence();
    SetWindowPos(hchild, 0,0,0,0,0, SWP_SHOWWINDOW|SWP_NOSIZE|SWP_NOMOVE);
    ok_sequence(WmShowChildSeq_2, "SetWindowPos:show_child_2", FALSE);

    ShowWindow(hchild, SW_HIDE);
    flush_sequence();
    SetWindowPos(hchild, 0,0,0,0,0, SWP_SHOWWINDOW|SWP_NOSIZE|SWP_NOMOVE|SWP_NOACTIVATE);
    ok_sequence(WmShowChildSeq_3, "SetWindowPos:show_child_3", FALSE);

    /* DestroyWindow sequence below expects that a child has focus */
    SetFocus(hchild);
    flush_sequence();

    DestroyWindow(hchild);
    ok_sequence(WmDestroyChildSeq, "DestroyWindow:child", FALSE);
    DestroyWindow(hchild2);
    DestroyWindow(hbutton);

    flush_sequence();
    hchild = CreateWindowExA(0, "TestWindowClass", "Test Child Popup", WS_CHILD | WS_POPUP,
                             0, 0, 100, 100, hparent, 0, 0, NULL);
    ok (hchild != 0, "Failed to create child popup window\n");
    ok_sequence(WmCreateChildPopupSeq, "CreateWindow:child_popup", FALSE);
    DestroyWindow(hchild);

    /* test what happens to a window which sets WS_VISIBLE in WM_CREATE */
    flush_sequence();
    hchild = CreateWindowExA(0, "TestPopupClass", "Test Popup", WS_POPUP,
                             0, 0, 100, 100, hparent, 0, 0, NULL);
    ok (hchild != 0, "Failed to create popup window\n");
    ok_sequence(WmCreateInvisiblePopupSeq, "CreateWindow:invisible_popup", FALSE);
    ok(GetWindowLongA(hchild, GWL_STYLE) & WS_VISIBLE, "WS_VISIBLE should be set\n");
    ok(IsWindowVisible(hchild), "IsWindowVisible() should return TRUE\n");
    flush_sequence();
    ShowWindow(hchild, SW_SHOW);
    ok_sequence(WmEmptySeq, "ShowWindow:show_visible_popup", FALSE);
    flush_sequence();
    SetWindowPos(hchild, 0,0,0,0,0, SWP_SHOWWINDOW|SWP_NOSIZE|SWP_NOMOVE|SWP_NOACTIVATE|SWP_NOZORDER);
    ok_sequence(WmShowVisiblePopupSeq_2, "SetWindowPos:show_visible_popup_2", FALSE);
    flush_sequence();
    SetWindowPos(hchild, 0,0,0,0,0, SWP_SHOWWINDOW|SWP_NOSIZE|SWP_NOMOVE);
    ok_sequence(WmShowVisiblePopupSeq_3, "SetWindowPos:show_visible_popup_3", FALSE);
    DestroyWindow(hchild);

    /* this time add WS_VISIBLE for CreateWindowEx, but this fact actually
     * changes nothing in message sequences.
     */
    flush_sequence();
    hchild = CreateWindowExA(0, "TestPopupClass", "Test Popup", WS_POPUP | WS_VISIBLE,
                             0, 0, 100, 100, hparent, 0, 0, NULL);
    ok (hchild != 0, "Failed to create popup window\n");
    ok_sequence(WmCreateInvisiblePopupSeq, "CreateWindow:invisible_popup", FALSE);
    ok(GetWindowLongA(hchild, GWL_STYLE) & WS_VISIBLE, "WS_VISIBLE should be set\n");
    ok(IsWindowVisible(hchild), "IsWindowVisible() should return TRUE\n");
    flush_sequence();
    ShowWindow(hchild, SW_SHOW);
    ok_sequence(WmEmptySeq, "ShowWindow:show_visible_popup", FALSE);
    flush_sequence();
    SetWindowPos(hchild, 0,0,0,0,0, SWP_SHOWWINDOW|SWP_NOSIZE|SWP_NOMOVE|SWP_NOACTIVATE|SWP_NOZORDER);
    ok_sequence(WmShowVisiblePopupSeq_2, "SetWindowPos:show_visible_popup_2", FALSE);
    DestroyWindow(hchild);

    flush_sequence();
    hwnd = CreateWindowExA(WS_EX_DLGMODALFRAME, "TestDialogClass", NULL, WS_VISIBLE|WS_CAPTION|WS_SYSMENU|WS_DLGFRAME,
                           0, 0, 100, 100, hparent, 0, 0, NULL);
    ok(hwnd != 0, "Failed to create custom dialog window\n");
    ok_sequence(WmCreateCustomDialogSeq, "CreateCustomDialog", TRUE);

    /*
    trace("testing scroll APIs on a visible dialog %p\n", hwnd);
    test_scroll_messages(hwnd);
    */

    flush_sequence();
    after_end_dialog = 1;
    EndDialog( hwnd, 0 );
    ok_sequence(WmEndCustomDialogSeq, "EndCustomDialog", FALSE);

    DestroyWindow(hwnd);
    after_end_dialog = 0;

    hwnd = CreateWindowExA(0, "TestDialogClass", NULL, WS_POPUP,
                           0, 0, 100, 100, 0, 0, GetModuleHandleA(0), NULL);
    ok(hwnd != 0, "Failed to create custom dialog window\n");
    flush_sequence();
    trace("call ShowWindow(%p, SW_SHOW)\n", hwnd);
    ShowWindow(hwnd, SW_SHOW);
    ok_sequence(WmShowCustomDialogSeq, "ShowCustomDialog", TRUE);
    DestroyWindow(hwnd);

    flush_sequence();
    DialogBoxA( 0, "TEST_DIALOG", hparent, TestModalDlgProcA );
    ok_sequence(WmModalDialogSeq, "ModalDialog", TRUE);

    /* test showing child with hidden parent */
    ShowWindow( hparent, SW_HIDE );
    flush_sequence();

    hchild = CreateWindowExA(0, "TestWindowClass", "Test child", WS_CHILD,
                             0, 0, 10, 10, hparent, 0, 0, NULL);
    ok (hchild != 0, "Failed to create child window\n");
    ok_sequence(WmCreateChildSeq, "CreateWindow:child", FALSE);

    ShowWindow( hchild, SW_SHOW );
    ok_sequence(WmShowChildInvisibleParentSeq, "ShowWindow:show child with invisible parent", TRUE);
    ok(GetWindowLongA(hchild, GWL_STYLE) & WS_VISIBLE, "WS_VISIBLE should be set\n");
    ok(!IsWindowVisible(hchild), "IsWindowVisible() should return FALSE\n");

    ShowWindow( hchild, SW_HIDE );
    ok_sequence(WmHideChildInvisibleParentSeq, "ShowWindow:hide child with invisible parent", TRUE);
    ok(!(GetWindowLongA(hchild, GWL_STYLE) & WS_VISIBLE), "WS_VISIBLE should be not set\n");
    ok(!IsWindowVisible(hchild), "IsWindowVisible() should return FALSE\n");

    SetWindowPos(hchild, 0,0,0,0,0, SWP_SHOWWINDOW|SWP_NOSIZE|SWP_NOMOVE|SWP_NOACTIVATE|SWP_NOZORDER);
    ok_sequence(WmShowChildInvisibleParentSeq_2, "SetWindowPos:show child with invisible parent", FALSE);
    ok(GetWindowLongA(hchild, GWL_STYLE) & WS_VISIBLE, "WS_VISIBLE should be set\n");
    ok(!IsWindowVisible(hchild), "IsWindowVisible() should return FALSE\n");

    SetWindowPos(hchild, 0,0,0,0,0, SWP_HIDEWINDOW|SWP_NOSIZE|SWP_NOMOVE|SWP_NOACTIVATE|SWP_NOZORDER);
    ok_sequence(WmHideChildInvisibleParentSeq_2, "SetWindowPos:hide child with invisible parent", FALSE);
    ok(!(GetWindowLongA(hchild, GWL_STYLE) & WS_VISIBLE), "WS_VISIBLE should not be set\n");
    ok(!IsWindowVisible(hchild), "IsWindowVisible() should return FALSE\n");

    DestroyWindow(hchild);
    DestroyWindow(hparent);
    flush_sequence();

    /* Message sequence for SetMenu */
    ok(!DrawMenuBar(hwnd), "DrawMenuBar should return FALSE for a window without a menu\n");
    ok_sequence(WmEmptySeq, "DrawMenuBar for a window without a menu", FALSE);

    hmenu = CreateMenu();
    ok (hmenu != 0, "Failed to create menu\n");
    ok (InsertMenuA(hmenu, -1, MF_BYPOSITION, 0x1000, "foo"), "InsertMenu failed\n");
    hwnd = CreateWindowExA(0, "TestWindowClass", "Test overlapped", WS_OVERLAPPEDWINDOW,
                           100, 100, 200, 200, 0, hmenu, 0, NULL);
    ok_sequence(WmCreateOverlappedSeq, "CreateWindow:overlapped", FALSE);
    ok (SetMenu(hwnd, 0), "SetMenu\n");
    ok_sequence(WmSetMenuNonVisibleSizeChangeSeq, "SetMenu:NonVisibleSizeChange", FALSE);
    ok (SetMenu(hwnd, 0), "SetMenu\n");
    ok_sequence(WmSetMenuNonVisibleNoSizeChangeSeq, "SetMenu:NonVisibleNoSizeChange", FALSE);
    ShowWindow(hwnd, SW_SHOW);
    UpdateWindow( hwnd );
    while (PeekMessage( &msg, 0, 0, 0, PM_REMOVE )) DispatchMessage( &msg );
    flush_sequence();
    ok (SetMenu(hwnd, 0), "SetMenu\n");
    ok_sequence(WmSetMenuVisibleNoSizeChangeSeq, "SetMenu:VisibleNoSizeChange", FALSE);
    ok (SetMenu(hwnd, hmenu), "SetMenu\n");
    ok_sequence(WmSetMenuVisibleSizeChangeSeq, "SetMenu:VisibleSizeChange", FALSE);

    UpdateWindow( hwnd );
    while (PeekMessage( &msg, 0, 0, 0, PM_REMOVE )) DispatchMessage( &msg );
    flush_sequence();
    ok(DrawMenuBar(hwnd), "DrawMenuBar\n");
    while (PeekMessage( &msg, 0, 0, 0, PM_REMOVE )) DispatchMessage( &msg );
    ok_sequence(WmDrawMenuBarSeq, "DrawMenuBar", FALSE);

    DestroyWindow(hwnd);
    flush_sequence();

    /* Message sequence for EnableWindow */
    hparent = CreateWindowExA(0, "TestWindowClass", "Test parent", WS_OVERLAPPEDWINDOW | WS_VISIBLE,
                              100, 100, 200, 200, 0, 0, 0, NULL);
    ok (hparent != 0, "Failed to create parent window\n");
    hchild = CreateWindowExA(0, "TestWindowClass", "Test child", WS_CHILD | WS_VISIBLE,
                             0, 0, 10, 10, hparent, 0, 0, NULL);
    ok (hchild != 0, "Failed to create child window\n");

    SetFocus(hchild);
    flush_sequence();

    EnableWindow(hparent, FALSE);
    ok_sequence(WmEnableWindowSeq_1, "EnableWindow(FALSE)", FALSE);

    EnableWindow(hparent, TRUE);
    ok_sequence(WmEnableWindowSeq_2, "EnableWindow(TRUE)", FALSE);

    while (PeekMessage( &msg, 0, 0, 0, PM_REMOVE )) DispatchMessage( &msg );
    flush_sequence();

    /* MsgWaitForMultipleObjects test */
    ret = MsgWaitForMultipleObjects(0, NULL, FALSE, 0, QS_POSTMESSAGE);
    ok(ret == WAIT_TIMEOUT, "MsgWaitForMultipleObjects returned %lx\n", ret);

    PostMessageA(hparent, WM_USER, 0, 0);

    ret = MsgWaitForMultipleObjects(0, NULL, FALSE, 0, QS_POSTMESSAGE);
    ok(ret == WAIT_OBJECT_0, "MsgWaitForMultipleObjects returned %lx\n", ret);

    ok(PeekMessageW( &msg, 0, 0, 0, PM_REMOVE ), "PeekMessage should succeed\n");
    ok(msg.message == WM_USER, "got %04x instead of WM_USER\n", msg.message);

    ret = MsgWaitForMultipleObjects(0, NULL, FALSE, 0, QS_POSTMESSAGE);
    ok(ret == WAIT_TIMEOUT, "MsgWaitForMultipleObjects returned %lx\n", ret);
    /* end of MsgWaitForMultipleObjects test */

    /* the following test causes an exception in user.exe under win9x */
    if (!PostMessageW( hparent, WM_USER, 0, 0 )) return;
    PostMessageW( hparent, WM_USER+1, 0, 0 );
    /* PeekMessage(NULL) fails, but still removes the message */
    SetLastError(0xdeadbeef);
    ok( !PeekMessageW( NULL, 0, 0, 0, PM_REMOVE ), "PeekMessage(NULL) should fail\n" );
    ok( GetLastError() == ERROR_NOACCESS || /* Win2k */
        GetLastError() == 0xdeadbeef, /* NT4 */
        "last error is %ld\n", GetLastError() );
    ok( PeekMessageW( &msg, 0, 0, 0, PM_REMOVE ), "PeekMessage should succeed\n" );
    ok( msg.message == WM_USER+1, "got %x instead of WM_USER+1\n", msg.message );

    DestroyWindow(hchild);
    DestroyWindow(hparent);
    flush_sequence();

    test_showwindow();
}

/****************** button message test *************************/
static const struct message WmSetFocusButtonSeq[] =
{
    { HCBT_SETFOCUS, hook },
    { WM_IME_SETCONTEXT, sent|wparam|optional, 1 },
    { EVENT_OBJECT_FOCUS, winevent_hook|wparam|lparam, OBJID_CLIENT, 0 },
    { WM_SETFOCUS, sent|wparam, 0 },
    { WM_CTLCOLORBTN, sent|defwinproc },
    { 0 }
};
static const struct message WmKillFocusButtonSeq[] =
{
    { HCBT_SETFOCUS, hook },
    { EVENT_OBJECT_FOCUS, winevent_hook|wparam|lparam, OBJID_CLIENT, 0 },
    { WM_KILLFOCUS, sent|wparam, 0 },
    { WM_CTLCOLORBTN, sent|defwinproc },
    { WM_IME_SETCONTEXT, sent|wparam|optional, 0 },
    { 0 }
};
static const struct message WmSetFocusStaticSeq[] =
{
    { HCBT_SETFOCUS, hook },
    { WM_IME_SETCONTEXT, sent|wparam|optional, 1 },
    { EVENT_OBJECT_FOCUS, winevent_hook|wparam|lparam, OBJID_CLIENT, 0 },
    { WM_SETFOCUS, sent|wparam, 0 },
    { WM_CTLCOLORSTATIC, sent|defwinproc },
    { 0 }
};
static const struct message WmKillFocusStaticSeq[] =
{
    { HCBT_SETFOCUS, hook },
    { EVENT_OBJECT_FOCUS, winevent_hook|wparam|lparam, OBJID_CLIENT, 0 },
    { WM_KILLFOCUS, sent|wparam, 0 },
    { WM_CTLCOLORSTATIC, sent|defwinproc },
    { WM_IME_SETCONTEXT, sent|wparam|optional, 0 },
    { 0 }
};
static const struct message WmLButtonDownSeq[] =
{
    { WM_LBUTTONDOWN, sent|wparam|lparam, 0, 0 },
    { EVENT_SYSTEM_CAPTURESTART, winevent_hook|wparam|lparam, 0, 0 },
    { HCBT_SETFOCUS, hook },
    { WM_IME_SETCONTEXT, sent|wparam|defwinproc|optional, 1 },
    { EVENT_OBJECT_FOCUS, winevent_hook|wparam|lparam, OBJID_CLIENT, 0 },
    { WM_SETFOCUS, sent|wparam|defwinproc, 0 },
    { WM_CTLCOLORBTN, sent|defwinproc },
    { BM_SETSTATE, sent|wparam|defwinproc, TRUE },
    { WM_CTLCOLORBTN, sent|defwinproc },
    { EVENT_OBJECT_STATECHANGE, winevent_hook|wparam|lparam, OBJID_CLIENT, 0 },
    { 0 }
};
static const struct message WmLButtonUpSeq[] =
{
    { WM_LBUTTONUP, sent|wparam|lparam, 0, 0 },
    { BM_SETSTATE, sent|wparam|defwinproc, FALSE },
    { WM_CTLCOLORBTN, sent|defwinproc },
    { EVENT_OBJECT_STATECHANGE, winevent_hook|wparam|lparam, OBJID_CLIENT, 0 },
    { EVENT_SYSTEM_CAPTUREEND, winevent_hook|wparam|lparam, 0, 0 },
    { WM_CAPTURECHANGED, sent|wparam|defwinproc, 0 },
    { 0 }
};

static WNDPROC old_button_proc;

static LRESULT CALLBACK button_hook_proc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
{
    static long defwndproc_counter = 0;
    LRESULT ret;
    struct message msg;

    trace("button: %p, %04x, %08x, %08lx\n", hwnd, message, wParam, lParam);

    /* explicitly ignore WM_GETICON message */
    if (message == WM_GETICON) return 0;

    msg.message = message;
    msg.flags = sent|wparam|lparam;
    if (defwndproc_counter) msg.flags |= defwinproc;
    msg.wParam = wParam;
    msg.lParam = lParam;
    add_message(&msg);

    if (message == BM_SETSTATE)
	ok(GetCapture() == hwnd, "GetCapture() = %p\n", GetCapture());

    defwndproc_counter++;
    ret = CallWindowProcA(old_button_proc, hwnd, message, wParam, lParam);
    defwndproc_counter--;

    return ret;
}

static void subclass_button(void)
{
    WNDCLASSA cls;

    if (!GetClassInfoA(0, "button", &cls)) assert(0);

    old_button_proc = cls.lpfnWndProc;

    cls.hInstance = GetModuleHandle(0);
    cls.lpfnWndProc = button_hook_proc;
    cls.lpszClassName = "my_button_class";
    if (!RegisterClassA(&cls)) assert(0);
}

static void test_button_messages(void)
{
    static const struct
    {
	DWORD style;
	DWORD dlg_code;
	const struct message *setfocus;
	const struct message *killfocus;
    } button[] = {
	{ BS_PUSHBUTTON, DLGC_BUTTON | DLGC_UNDEFPUSHBUTTON,
	  WmSetFocusButtonSeq, WmKillFocusButtonSeq },
	{ BS_DEFPUSHBUTTON, DLGC_BUTTON | DLGC_DEFPUSHBUTTON,
	  WmSetFocusButtonSeq, WmKillFocusButtonSeq },
	{ BS_CHECKBOX, DLGC_BUTTON,
	  WmSetFocusStaticSeq, WmKillFocusStaticSeq },
	{ BS_AUTOCHECKBOX, DLGC_BUTTON,
	  WmSetFocusStaticSeq, WmKillFocusStaticSeq },
	{ BS_RADIOBUTTON, DLGC_BUTTON | DLGC_RADIOBUTTON,
	  WmSetFocusStaticSeq, WmKillFocusStaticSeq },
	{ BS_3STATE, DLGC_BUTTON,
	  WmSetFocusStaticSeq, WmKillFocusStaticSeq },
	{ BS_AUTO3STATE, DLGC_BUTTON,
	  WmSetFocusStaticSeq, WmKillFocusStaticSeq },
	{ BS_GROUPBOX, DLGC_STATIC,
	  WmSetFocusStaticSeq, WmKillFocusStaticSeq },
	{ BS_USERBUTTON, DLGC_BUTTON | DLGC_UNDEFPUSHBUTTON,
	  WmSetFocusButtonSeq, WmKillFocusButtonSeq },
	{ BS_AUTORADIOBUTTON, DLGC_BUTTON | DLGC_RADIOBUTTON,
	  WmSetFocusStaticSeq, WmKillFocusStaticSeq },
	{ BS_OWNERDRAW, DLGC_BUTTON,
	  WmSetFocusButtonSeq, WmKillFocusButtonSeq }
    };
    unsigned int i;
    HWND hwnd;
    DWORD dlg_code;

    subclass_button();

    for (i = 0; i < sizeof(button)/sizeof(button[0]); i++)
    {
	hwnd = CreateWindowExA(0, "my_button_class", "test", button[i].style | WS_POPUP,
			       0, 0, 50, 14, 0, 0, 0, NULL);
	ok(hwnd != 0, "Failed to create button window\n");

	dlg_code = SendMessageA(hwnd, WM_GETDLGCODE, 0, 0);
	ok(dlg_code == button[i].dlg_code, "%d: wrong dlg_code %08lx\n", i, dlg_code);

	ShowWindow(hwnd, SW_SHOW);
	UpdateWindow(hwnd);
	SetFocus(0);
	flush_sequence();

	trace("button style %08lx\n", button[i].style);
	SetFocus(hwnd);
	ok_sequence(button[i].setfocus, "SetFocus(hwnd) on a button", FALSE);

	SetFocus(0);
	ok_sequence(button[i].killfocus, "SetFocus(0) on a button", FALSE);

	DestroyWindow(hwnd);
    }

    hwnd = CreateWindowExA(0, "my_button_class", "test", BS_PUSHBUTTON | WS_POPUP | WS_VISIBLE,
			   0, 0, 50, 14, 0, 0, 0, NULL);
    ok(hwnd != 0, "Failed to create button window\n");

    SetFocus(0);
    flush_sequence();

    SendMessageA(hwnd, WM_LBUTTONDOWN, 0, 0);
    ok_sequence(WmLButtonDownSeq, "WM_LBUTTONDOWN on a button", FALSE);

    SendMessageA(hwnd, WM_LBUTTONUP, 0, 0);
    ok_sequence(WmLButtonUpSeq, "WM_LBUTTONUP on a button", FALSE);
    DestroyWindow(hwnd);
}

/************* painting message test ********************/

void dump_region(HRGN hrgn)
{
    DWORD i, size;
    RGNDATA *data = NULL;
    RECT *rect;

    if (!hrgn)
    {
        printf( "null region\n" );
        return;
    }
    if (!(size = GetRegionData( hrgn, 0, NULL ))) return;
    if (!(data = HeapAlloc( GetProcessHeap(), 0, size ))) return;
    GetRegionData( hrgn, size, data );
    printf("%ld rects:", data->rdh.nCount );
    for (i = 0, rect = (RECT *)data->Buffer; i < data->rdh.nCount; i++, rect++)
        printf( " (%ld,%ld)-(%ld,%ld)", rect->left, rect->top, rect->right, rect->bottom );
    printf("\n");
    HeapFree( GetProcessHeap(), 0, data );
}

static void check_update_rgn( HWND hwnd, HRGN hrgn )
{
    INT ret;
    RECT r1, r2;
    HRGN tmp = CreateRectRgn( 0, 0, 0, 0 );
    HRGN update = CreateRectRgn( 0, 0, 0, 0 );

    ret = GetUpdateRgn( hwnd, update, FALSE );
    ok( ret != ERROR, "GetUpdateRgn failed\n" );
    if (ret == NULLREGION)
    {
        ok( !hrgn, "Update region shouldn't be empty\n" );
    }
    else
    {
        if (CombineRgn( tmp, hrgn, update, RGN_XOR ) != NULLREGION)
        {
            ok( 0, "Regions are different\n" );
            if (winetest_debug > 0)
            {
                printf( "Update region: " );
                dump_region( update );
                printf( "Wanted region: " );
                dump_region( hrgn );
            }
        }
    }
    GetRgnBox( update, &r1 );
    GetUpdateRect( hwnd, &r2, FALSE );
    ok( r1.left == r2.left && r1.top == r2.top && r1.right == r2.right && r1.bottom == r2.bottom,
        "Rectangles are different: %ld,%ld-%ld,%ld / %ld,%ld-%ld,%ld\n",
        r1.left, r1.top, r1.right, r1.bottom, r2.left, r2.top, r2.right, r2.bottom );

    DeleteObject( tmp );
    DeleteObject( update );
}

static const struct message WmInvalidateRgn[] = {
    { WM_NCPAINT, sent },
    { WM_GETTEXT, sent|defwinproc|optional },
    { 0 }
};

static const struct message WmGetUpdateRect[] = {
    { WM_NCPAINT, sent },
    { WM_GETTEXT, sent|defwinproc|optional },
    { WM_PAINT, sent },
    { 0 }
};

static const struct message WmInvalidateFull[] = {
    { WM_NCPAINT, sent|wparam, 1 },
    { WM_GETTEXT, sent|defwinproc|optional },
    { 0 }
};

static const struct message WmInvalidateErase[] = {
    { WM_NCPAINT, sent|wparam, 1 },
    { WM_GETTEXT, sent|defwinproc|optional },
    { WM_ERASEBKGND, sent },
    { 0 }
};

static const struct message WmInvalidatePaint[] = {
    { WM_PAINT, sent },
    { WM_NCPAINT, sent|wparam|beginpaint, 1 },
    { WM_GETTEXT, sent|beginpaint|defwinproc|optional },
    { 0 }
};

static const struct message WmInvalidateErasePaint[] = {
    { WM_PAINT, sent },
    { WM_NCPAINT, sent|wparam|beginpaint, 1 },
    { WM_GETTEXT, sent|beginpaint|defwinproc|optional },
    { WM_ERASEBKGND, sent|beginpaint },
    { 0 }
};

static const struct message WmInvalidateErasePaint2[] = {
    { WM_PAINT, sent },
    { WM_NCPAINT, sent|beginpaint },
    { WM_GETTEXT, sent|beginpaint|defwinproc|optional },
    { WM_ERASEBKGND, sent|beginpaint },
    { 0 }
};

static const struct message WmErase[] = {
    { WM_ERASEBKGND, sent },
    { 0 }
};

static const struct message WmPaint[] = {
    { WM_PAINT, sent },
    { 0 }
};

static const struct message WmParentOnlyPaint[] = {
    { WM_PAINT, sent|parent },
    { 0 }
};

static const struct message WmInvalidateParent[] = {
    { WM_NCPAINT, sent|parent },
    { WM_GETTEXT, sent|defwinproc|parent|optional },
    { WM_ERASEBKGND, sent|parent },
    { 0 }
};

static const struct message WmInvalidateParentChild[] = {
    { WM_NCPAINT, sent|parent },
    { WM_GETTEXT, sent|defwinproc|parent|optional },
    { WM_ERASEBKGND, sent|parent },
    { WM_NCPAINT, sent },
    { WM_GETTEXT, sent|defwinproc|optional },
    { WM_ERASEBKGND, sent },
    { 0 }
};

static const struct message WmInvalidateParentChild2[] = {
    { WM_ERASEBKGND, sent|parent },
    { WM_NCPAINT, sent },
    { WM_GETTEXT, sent|defwinproc|optional },
    { WM_ERASEBKGND, sent },
    { 0 }
};

static const struct message WmParentPaint[] = {
    { WM_PAINT, sent|parent },
    { WM_PAINT, sent },
    { 0 }
};

static const struct message WmParentPaintNc[] = {
    { WM_PAINT, sent|parent },
    { WM_PAINT, sent },
    { WM_NCPAINT, sent|beginpaint },
    { WM_GETTEXT, sent|beginpaint|defwinproc|optional },
    { WM_ERASEBKGND, sent|beginpaint },
    { 0 }
};

static const struct message WmChildPaintNc[] = {
    { WM_PAINT, sent },
    { WM_NCPAINT, sent|beginpaint },
    { WM_GETTEXT, sent|beginpaint|defwinproc|optional },
    { WM_ERASEBKGND, sent|beginpaint },
    { 0 }
};

static const struct message WmParentErasePaint[] = {
    { WM_PAINT, sent|parent },
    { WM_NCPAINT, sent|parent|beginpaint },
    { WM_GETTEXT, sent|parent|beginpaint|defwinproc|optional },
    { WM_ERASEBKGND, sent|parent|beginpaint },
    { WM_PAINT, sent },
    { WM_NCPAINT, sent|beginpaint },
    { WM_GETTEXT, sent|beginpaint|defwinproc|optional },
    { WM_ERASEBKGND, sent|beginpaint },
    { 0 }
};

static const struct message WmParentOnlyNcPaint[] = {
    { WM_PAINT, sent|parent },
    { WM_NCPAINT, sent|parent|beginpaint },
    { WM_GETTEXT, sent|parent|beginpaint|defwinproc|optional },
    { 0 }
};

static const struct message WmSetParentStyle[] = {
    { WM_STYLECHANGING, sent|parent },
    { WM_STYLECHANGED, sent|parent },
    { 0 }
};

static void test_paint_messages(void)
{
    RECT rect;
    POINT pt;
    MSG msg;
    HWND hparent, hchild;
    HRGN hrgn = CreateRectRgn( 0, 0, 0, 0 );
    HRGN hrgn2 = CreateRectRgn( 0, 0, 0, 0 );
    HWND hwnd = CreateWindowExA(0, "TestWindowClass", "Test overlapped", WS_OVERLAPPEDWINDOW,
                                100, 100, 200, 200, 0, 0, 0, NULL);
    ok (hwnd != 0, "Failed to create overlapped window\n");

    ShowWindow( hwnd, SW_SHOW );
    UpdateWindow( hwnd );

    /* try to flush pending X expose events */
    MsgWaitForMultipleObjects( 0, NULL, FALSE, 100, QS_ALLINPUT );
    while (PeekMessage( &msg, 0, 0, 0, PM_REMOVE )) DispatchMessage( &msg );

    check_update_rgn( hwnd, 0 );
    SetRectRgn( hrgn, 10, 10, 20, 20 );
    RedrawWindow( hwnd, NULL, hrgn, RDW_INVALIDATE );
    check_update_rgn( hwnd, hrgn );
    SetRectRgn( hrgn2, 20, 20, 30, 30 );
    RedrawWindow( hwnd, NULL, hrgn2, RDW_INVALIDATE );
    CombineRgn( hrgn, hrgn, hrgn2, RGN_OR );
    check_update_rgn( hwnd, hrgn );
    /* validate everything */
    RedrawWindow( hwnd, NULL, NULL, RDW_VALIDATE );
    check_update_rgn( hwnd, 0 );

    /* flush pending messages */
    while (PeekMessage( &msg, 0, 0, 0, PM_REMOVE )) DispatchMessage( &msg );
    flush_sequence();

    GetClientRect( hwnd, &rect );
    SetRectRgn( hrgn, 0, 0, rect.right - rect.left, rect.bottom - rect.top );
    /* MSDN: if hwnd parameter is NULL, InvalidateRect invalidates and redraws
     * all windows and sends WM_ERASEBKGND and WM_NCPAINT.
     */
    trace("testing InvalidateRect(0, NULL, FALSE)\n");
    SetRectEmpty( &rect );
    ok(InvalidateRect(0, &rect, FALSE), "InvalidateRect(0, &rc, FALSE) should fail\n");
    check_update_rgn( hwnd, hrgn );
    ok_sequence( WmInvalidateErase, "InvalidateErase", FALSE );
    while (PeekMessage( &msg, 0, 0, 0, PM_REMOVE )) DispatchMessage( &msg );
    ok_sequence( WmPaint, "Paint", FALSE );
    RedrawWindow( hwnd, NULL, NULL, RDW_VALIDATE );
    check_update_rgn( hwnd, 0 );

    /* MSDN: if hwnd parameter is NULL, ValidateRect invalidates and redraws
     * all windows and sends WM_ERASEBKGND and WM_NCPAINT.
     */
    trace("testing ValidateRect(0, NULL)\n");
    SetRectEmpty( &rect );
    ok(ValidateRect(0, &rect), "ValidateRect(0, &rc) should not fail");
    check_update_rgn( hwnd, hrgn );
    ok_sequence( WmInvalidateErase, "InvalidateErase", FALSE );
    while (PeekMessage( &msg, 0, 0, 0, PM_REMOVE )) DispatchMessage( &msg );
    ok_sequence( WmPaint, "Paint", FALSE );
    RedrawWindow( hwnd, NULL, NULL, RDW_VALIDATE );
    check_update_rgn( hwnd, 0 );

    trace("testing InvalidateRgn(0, NULL, FALSE)\n");
    SetLastError(0xdeadbeef);
    ok(!InvalidateRgn(0, NULL, FALSE), "InvalidateRgn(0, NULL, FALSE) should fail\n");
    ok(GetLastError() == ERROR_INVALID_WINDOW_HANDLE, "wrong error code %ld\n", GetLastError());
    check_update_rgn( hwnd, 0 );
    while (PeekMessage( &msg, 0, 0, 0, PM_REMOVE )) DispatchMessage( &msg );
    ok_sequence( WmEmptySeq, "WmEmptySeq", FALSE );

    trace("testing ValidateRgn(0, NULL)\n");
    SetLastError(0xdeadbeef);
    ok(!ValidateRgn(0, NULL), "ValidateRgn(0, NULL) should fail");
    ok(GetLastError() == ERROR_INVALID_WINDOW_HANDLE, "wrong error code %ld\n", GetLastError());
    check_update_rgn( hwnd, 0 );
    while (PeekMessage( &msg, 0, 0, 0, PM_REMOVE )) DispatchMessage( &msg );
    ok_sequence( WmEmptySeq, "WmEmptySeq", FALSE );

    /* now with frame */
    SetRectRgn( hrgn, -5, -5, 20, 20 );

    /* flush pending messages */
    while (PeekMessage( &msg, 0, 0, 0, PM_REMOVE )) DispatchMessage( &msg );

    flush_sequence();
    RedrawWindow( hwnd, NULL, hrgn, RDW_INVALIDATE | RDW_FRAME );
    ok_sequence( WmEmptySeq, "EmptySeq", FALSE );

    SetRectRgn( hrgn, 0, 0, 20, 20 );  /* GetUpdateRgn clips to client area */
    check_update_rgn( hwnd, hrgn );

    flush_sequence();
    RedrawWindow( hwnd, NULL, hrgn, RDW_INVALIDATE | RDW_FRAME | RDW_ERASENOW );
    ok_sequence( WmInvalidateRgn, "InvalidateRgn", FALSE );

    flush_sequence();
    RedrawWindow( hwnd, NULL, NULL, RDW_INVALIDATE | RDW_FRAME | RDW_ERASENOW );
    ok_sequence( WmInvalidateFull, "InvalidateFull", FALSE );

    GetClientRect( hwnd, &rect );
    SetRectRgn( hrgn, rect.left, rect.top, rect.right, rect.bottom );
    check_update_rgn( hwnd, hrgn );

    flush_sequence();
    RedrawWindow( hwnd, NULL, NULL, RDW_INVALIDATE | RDW_FRAME | RDW_ERASE | RDW_ERASENOW );
    ok_sequence( WmInvalidateErase, "InvalidateErase", FALSE );

    flush_sequence();
    RedrawWindow( hwnd, NULL, NULL, RDW_INVALIDATE | RDW_FRAME | RDW_ERASENOW | RDW_UPDATENOW );
    ok_sequence( WmInvalidatePaint, "InvalidatePaint", FALSE );
    check_update_rgn( hwnd, 0 );

    flush_sequence();
    RedrawWindow( hwnd, NULL, NULL, RDW_INVALIDATE | RDW_FRAME | RDW_ERASE | RDW_UPDATENOW );
    ok_sequence( WmInvalidateErasePaint, "InvalidateErasePaint", FALSE );
    check_update_rgn( hwnd, 0 );

    flush_sequence();
    SetRectRgn( hrgn, 0, 0, 100, 100 );
    RedrawWindow( hwnd, NULL, hrgn, RDW_INVALIDATE );
    SetRectRgn( hrgn, 0, 0, 50, 100 );
    RedrawWindow( hwnd, NULL, hrgn, RDW_VALIDATE );
    SetRectRgn( hrgn, 50, 0, 100, 100 );
    check_update_rgn( hwnd, hrgn );
    RedrawWindow( hwnd, NULL, hrgn, RDW_VALIDATE | RDW_ERASENOW );
    ok_sequence( WmEmptySeq, "EmptySeq", FALSE );  /* must not generate messages, everything is valid */
    check_update_rgn( hwnd, 0 );

    flush_sequence();
    SetRectRgn( hrgn, 0, 0, 100, 100 );
    RedrawWindow( hwnd, NULL, hrgn, RDW_INVALIDATE | RDW_ERASE );
    SetRectRgn( hrgn, 0, 0, 100, 50 );
    RedrawWindow( hwnd, NULL, hrgn, RDW_VALIDATE | RDW_ERASENOW );
    ok_sequence( WmErase, "Erase", FALSE );
    SetRectRgn( hrgn, 0, 50, 100, 100 );
    check_update_rgn( hwnd, hrgn );

    flush_sequence();
    SetRectRgn( hrgn, 0, 0, 100, 100 );
    RedrawWindow( hwnd, NULL, hrgn, RDW_INVALIDATE | RDW_ERASE );
    SetRectRgn( hrgn, 0, 0, 50, 50 );
    RedrawWindow( hwnd, NULL, hrgn, RDW_VALIDATE | RDW_NOERASE | RDW_UPDATENOW );
    ok_sequence( WmPaint, "Paint", FALSE );

    flush_sequence();
    SetRectRgn( hrgn, -4, -4, -2, -2 );
    RedrawWindow( hwnd, NULL, hrgn, RDW_INVALIDATE | RDW_FRAME );
    SetRectRgn( hrgn, -200, -200, -198, -198 );
    RedrawWindow( hwnd, NULL, hrgn, RDW_VALIDATE | RDW_NOFRAME | RDW_ERASENOW );
    ok_sequence( WmEmptySeq, "EmptySeq", FALSE );

    flush_sequence();
    SetRectRgn( hrgn, -4, -4, -2, -2 );
    RedrawWindow( hwnd, NULL, hrgn, RDW_INVALIDATE | RDW_FRAME );
    SetRectRgn( hrgn, -4, -4, -3, -3 );
    RedrawWindow( hwnd, NULL, hrgn, RDW_VALIDATE | RDW_NOFRAME );
    SetRectRgn( hrgn, 0, 0, 1, 1 );
    RedrawWindow( hwnd, NULL, hrgn, RDW_INVALIDATE | RDW_UPDATENOW );
    ok_sequence( WmPaint, "Paint", FALSE );

    flush_sequence();
    SetRectRgn( hrgn, -4, -4, -1, -1 );
    RedrawWindow( hwnd, NULL, hrgn, RDW_INVALIDATE | RDW_FRAME );
    RedrawWindow( hwnd, NULL, 0, RDW_ERASENOW );
    /* make sure no WM_PAINT was generated */
    while (PeekMessage( &msg, 0, 0, 0, PM_REMOVE )) DispatchMessage( &msg );
    ok_sequence( WmInvalidateRgn, "InvalidateRgn", FALSE );

    flush_sequence();
    SetRectRgn( hrgn, -4, -4, -1, -1 );
    RedrawWindow( hwnd, NULL, hrgn, RDW_INVALIDATE | RDW_FRAME );
    while (PeekMessage( &msg, 0, 0, 0, PM_REMOVE ))
    {
        if (msg.hwnd == hwnd && msg.message == WM_PAINT)
        {
            /* GetUpdateRgn must return empty region since only nonclient area is invalidated */
            INT ret = GetUpdateRgn( hwnd, hrgn, FALSE );
            ok( ret == NULLREGION, "Invalid GetUpdateRgn result %d\n", ret );
            ret = GetUpdateRect( hwnd, &rect, FALSE );
            ok( ret, "Invalid GetUpdateRect result %d\n", ret );
            /* this will send WM_NCPAINT and validate the non client area */
            ret = GetUpdateRect( hwnd, &rect, TRUE );
            ok( !ret, "Invalid GetUpdateRect result %d\n", ret );
        }
        DispatchMessage( &msg );
    }
    ok_sequence( WmGetUpdateRect, "GetUpdateRect", FALSE );

    DestroyWindow( hwnd );

    /* now test with a child window */

    hparent = CreateWindowExA(0, "TestParentClass", "Test parent", WS_OVERLAPPEDWINDOW,
                              100, 100, 200, 200, 0, 0, 0, NULL);
    ok (hparent != 0, "Failed to create parent window\n");

    hchild = CreateWindowExA(0, "TestWindowClass", "Test child", WS_CHILD | WS_VISIBLE | WS_BORDER,
                           10, 10, 100, 100, hparent, 0, 0, NULL);
    ok (hchild != 0, "Failed to create child window\n");

    ShowWindow( hparent, SW_SHOW );
    UpdateWindow( hparent );
    UpdateWindow( hchild );
    /* try to flush pending X expose events */
    MsgWaitForMultipleObjects( 0, NULL, FALSE, 100, QS_ALLINPUT );
    while (PeekMessage( &msg, 0, 0, 0, PM_REMOVE )) DispatchMessage( &msg );

    flush_sequence();
    log_all_parent_messages++;

    SetRect( &rect, 0, 0, 50, 50 );
    RedrawWindow( hparent, &rect, 0, RDW_INVALIDATE | RDW_ERASE | RDW_FRAME );
    RedrawWindow( hparent, NULL, 0, RDW_ERASENOW | RDW_ALLCHILDREN );
    ok_sequence( WmInvalidateParentChild, "InvalidateParentChild", FALSE );

    RedrawWindow( hparent, &rect, 0, RDW_INVALIDATE | RDW_ERASE | RDW_FRAME );
    pt.x = pt.y = 0;
    MapWindowPoints( hchild, hparent, &pt, 1 );
    SetRectRgn( hrgn, 0, 0, 50 - pt.x, 50 - pt.y );
    check_update_rgn( hchild, hrgn );
    SetRectRgn( hrgn, 0, 0, 50, 50 );
    check_update_rgn( hparent, hrgn );
    RedrawWindow( hparent, NULL, 0, RDW_ERASENOW );
    ok_sequence( WmInvalidateParent, "InvalidateParent", FALSE );
    RedrawWindow( hchild, NULL, 0, RDW_ERASENOW );
    ok_sequence( WmEmptySeq, "EraseNow child", FALSE );

    while (PeekMessage( &msg, 0, 0, 0, PM_REMOVE )) DispatchMessage( &msg );
    ok_sequence( WmParentPaintNc, "WmParentPaintNc", FALSE );

    RedrawWindow( hparent, &rect, 0, RDW_INVALIDATE | RDW_ERASE | RDW_FRAME | RDW_ALLCHILDREN );
    RedrawWindow( hparent, NULL, 0, RDW_ERASENOW );
    ok_sequence( WmInvalidateParent, "InvalidateParent2", FALSE );
    RedrawWindow( hchild, NULL, 0, RDW_ERASENOW );
    ok_sequence( WmEmptySeq, "EraseNow child", FALSE );

    RedrawWindow( hparent, &rect, 0, RDW_INVALIDATE | RDW_ERASE );
    RedrawWindow( hparent, NULL, 0, RDW_ERASENOW | RDW_ALLCHILDREN );
    ok_sequence( WmInvalidateParentChild2, "InvalidateParentChild2", FALSE );

    SetWindowLong( hparent, GWL_STYLE, GetWindowLong(hparent,GWL_STYLE) | WS_CLIPCHILDREN );
    flush_sequence();
    RedrawWindow( hparent, &rect, 0, RDW_INVALIDATE | RDW_ERASE | RDW_FRAME | RDW_ALLCHILDREN );
    RedrawWindow( hparent, NULL, 0, RDW_ERASENOW );
    ok_sequence( WmInvalidateParentChild, "InvalidateParentChild3", FALSE );

    /* flush all paint messages */
    while (PeekMessage( &msg, 0, 0, 0, PM_REMOVE )) DispatchMessage( &msg );
    flush_sequence();

    /* RDW_UPDATENOW on child with WS_CLIPCHILDREN doesn't change corresponding parent area */
    RedrawWindow( hparent, &rect, 0, RDW_INVALIDATE | RDW_ERASE | RDW_FRAME | RDW_ALLCHILDREN );
    SetRectRgn( hrgn, 0, 0, 50, 50 );
    check_update_rgn( hparent, hrgn );
    RedrawWindow( hchild, NULL, 0, RDW_UPDATENOW );
    ok_sequence( WmInvalidateErasePaint2, "WmInvalidateErasePaint2", FALSE );
    SetRectRgn( hrgn, 0, 0, 50, 50 );
    check_update_rgn( hparent, hrgn );

    /* flush all paint messages */
    while (PeekMessage( &msg, 0, 0, 0, PM_REMOVE )) DispatchMessage( &msg );
    SetWindowLong( hparent, GWL_STYLE, GetWindowLong(hparent,GWL_STYLE) & ~WS_CLIPCHILDREN );
    flush_sequence();

    /* RDW_UPDATENOW on child without WS_CLIPCHILDREN will validate corresponding parent area */
    RedrawWindow( hparent, &rect, 0, RDW_INVALIDATE | RDW_ERASE | RDW_FRAME );
    SetRectRgn( hrgn, 0, 0, 50, 50 );
    check_update_rgn( hparent, hrgn );
    RedrawWindow( hchild, NULL, 0, RDW_UPDATENOW );
    ok_sequence( WmInvalidateErasePaint2, "WmInvalidateErasePaint2", FALSE );
    SetRectRgn( hrgn2, 10, 10, 50, 50 );
    CombineRgn( hrgn, hrgn, hrgn2, RGN_DIFF );
    check_update_rgn( hparent, hrgn );
    /* flush all paint messages */
    while (PeekMessage( &msg, 0, 0, 0, PM_REMOVE )) DispatchMessage( &msg );
    flush_sequence();

    /* same as above but parent gets completely validated */
    SetRect( &rect, 20, 20, 30, 30 );
    RedrawWindow( hparent, &rect, 0, RDW_INVALIDATE | RDW_ERASE | RDW_FRAME );
    SetRectRgn( hrgn, 20, 20, 30, 30 );
    check_update_rgn( hparent, hrgn );
    RedrawWindow( hchild, NULL, 0, RDW_UPDATENOW );
    ok_sequence( WmInvalidateErasePaint2, "WmInvalidateErasePaint2", FALSE );
    check_update_rgn( hparent, 0 );  /* no update region */
    while (PeekMessage( &msg, 0, 0, 0, PM_REMOVE )) DispatchMessage( &msg );
    ok_sequence( WmEmptySeq, "WmEmpty", FALSE );  /* and no paint messages */

    /* make sure RDW_VALIDATE on child doesn't have the same effect */
    flush_sequence();
    RedrawWindow( hparent, &rect, 0, RDW_INVALIDATE | RDW_ERASE | RDW_FRAME );
    SetRectRgn( hrgn, 20, 20, 30, 30 );
    check_update_rgn( hparent, hrgn );
    RedrawWindow( hchild, NULL, 0, RDW_VALIDATE | RDW_NOERASE );
    SetRectRgn( hrgn, 20, 20, 30, 30 );
    check_update_rgn( hparent, hrgn );

    /* same as above but normal WM_PAINT doesn't validate parent */
    flush_sequence();
    SetRect( &rect, 20, 20, 30, 30 );
    RedrawWindow( hparent, &rect, 0, RDW_INVALIDATE | RDW_ERASE | RDW_FRAME );
    SetRectRgn( hrgn, 20, 20, 30, 30 );
    check_update_rgn( hparent, hrgn );
    /* no WM_PAINT in child while parent still pending */
    while (PeekMessage( &msg, hchild, 0, 0, PM_REMOVE )) DispatchMessage( &msg );
    ok_sequence( WmEmptySeq, "No WM_PAINT", FALSE );
    while (PeekMessage( &msg, hparent, 0, 0, PM_REMOVE )) DispatchMessage( &msg );
    ok_sequence( WmParentErasePaint, "WmParentErasePaint", FALSE );

    flush_sequence();
    RedrawWindow( hparent, &rect, 0, RDW_INVALIDATE | RDW_ERASE | RDW_FRAME );
    /* no WM_PAINT in child while parent still pending */
    while (PeekMessage( &msg, hchild, 0, 0, PM_REMOVE )) DispatchMessage( &msg );
    ok_sequence( WmEmptySeq, "No WM_PAINT", FALSE );
    RedrawWindow( hparent, &rect, 0, RDW_VALIDATE | RDW_NOERASE | RDW_NOCHILDREN );
    /* now that parent is valid child should get WM_PAINT */
    while (PeekMessage( &msg, hchild, 0, 0, PM_REMOVE )) DispatchMessage( &msg );
    ok_sequence( WmInvalidateErasePaint2, "WmInvalidateErasePaint2", FALSE );
    while (PeekMessage( &msg, 0, 0, 0, PM_REMOVE )) DispatchMessage( &msg );
    ok_sequence( WmEmptySeq, "No other message", FALSE );

    /* same thing with WS_CLIPCHILDREN in parent */
    flush_sequence();
    SetWindowLong( hparent, GWL_STYLE, GetWindowLong(hparent,GWL_STYLE) | WS_CLIPCHILDREN );
    ok_sequence( WmSetParentStyle, "WmSetParentStyle", FALSE );
    /* changing style invalidates non client area, but we need to invalidate something else to see it */
    RedrawWindow( hparent, &rect, 0, RDW_UPDATENOW );
    ok_sequence( WmEmptySeq, "No message", FALSE );
    RedrawWindow( hparent, &rect, 0, RDW_INVALIDATE | RDW_UPDATENOW );
    ok_sequence( WmParentOnlyNcPaint, "WmParentOnlyNcPaint", FALSE );

    flush_sequence();
    RedrawWindow( hparent, &rect, 0, RDW_INVALIDATE | RDW_ERASE | RDW_ALLCHILDREN );
    SetRectRgn( hrgn, 20, 20, 30, 30 );
    check_update_rgn( hparent, hrgn );
    /* no WM_PAINT in child while parent still pending */
    while (PeekMessage( &msg, hchild, 0, 0, PM_REMOVE )) DispatchMessage( &msg );
    ok_sequence( WmEmptySeq, "No WM_PAINT", FALSE );
    /* WM_PAINT in parent first */
    while (PeekMessage( &msg, 0, 0, 0, PM_REMOVE )) DispatchMessage( &msg );
    ok_sequence( WmParentPaintNc, "WmParentPaintNc2", FALSE );

    /* no RDW_ERASE in parent still causes RDW_ERASE and RDW_FRAME in child */
    flush_sequence();
    SetRect( &rect, 0, 0, 30, 30 );
    RedrawWindow( hparent, &rect, 0, RDW_INVALIDATE | RDW_ALLCHILDREN );
    SetRectRgn( hrgn, 0, 0, 30, 30 );
    check_update_rgn( hparent, hrgn );
    while (PeekMessage( &msg, 0, 0, 0, PM_REMOVE )) DispatchMessage( &msg );
    ok_sequence( WmParentPaintNc, "WmParentPaintNc3", FALSE );

    /* validate doesn't cause RDW_NOERASE or RDW_NOFRAME in child */
    flush_sequence();
    SetRect( &rect, -10, 0, 30, 30 );
    RedrawWindow( hchild, &rect, 0, RDW_INVALIDATE | RDW_FRAME | RDW_ERASE );
    SetRect( &rect, 0, 0, 20, 20 );
    RedrawWindow( hparent, &rect, 0, RDW_VALIDATE | RDW_ALLCHILDREN );
    RedrawWindow( hparent, NULL, 0, RDW_UPDATENOW );
    ok_sequence( WmChildPaintNc, "WmChildPaintNc", FALSE );

    /* validate doesn't cause RDW_NOERASE or RDW_NOFRAME in child */
    flush_sequence();
    SetRect( &rect, -10, 0, 30, 30 );
    RedrawWindow( hchild, &rect, 0, RDW_INVALIDATE | RDW_FRAME | RDW_ERASE );
    SetRect( &rect, 0, 0, 100, 100 );
    RedrawWindow( hparent, &rect, 0, RDW_VALIDATE | RDW_ALLCHILDREN );
    RedrawWindow( hparent, NULL, 0, RDW_UPDATENOW );
    ok_sequence( WmEmptySeq, "WmChildPaintNc2", FALSE );
    RedrawWindow( hparent, NULL, 0, RDW_ERASENOW );
    ok_sequence( WmEmptySeq, "WmChildPaintNc3", FALSE );

    /* test RDW_INTERNALPAINT behavior */

    flush_sequence();
    RedrawWindow( hparent, NULL, 0, RDW_INTERNALPAINT | RDW_NOCHILDREN );
    while (PeekMessage( &msg, 0, 0, 0, PM_REMOVE )) DispatchMessage( &msg );
    ok_sequence( WmParentOnlyPaint, "WmParentOnlyPaint", FALSE );

    RedrawWindow( hparent, NULL, 0, RDW_INTERNALPAINT | RDW_ALLCHILDREN );
    while (PeekMessage( &msg, 0, 0, 0, PM_REMOVE )) DispatchMessage( &msg );
    ok_sequence( WmParentPaint, "WmParentPaint", FALSE );

    RedrawWindow( hparent, NULL, 0, RDW_INTERNALPAINT );
    while (PeekMessage( &msg, 0, 0, 0, PM_REMOVE )) DispatchMessage( &msg );
    ok_sequence( WmParentOnlyPaint, "WmParentOnlyPaint", FALSE );

    assert( GetWindowLong(hparent, GWL_STYLE) & WS_CLIPCHILDREN );
    UpdateWindow( hparent );
    while (PeekMessage( &msg, 0, 0, 0, PM_REMOVE )) DispatchMessage( &msg );
    flush_sequence();
    trace("testing SWP_FRAMECHANGED on parent with WS_CLIPCHILDREN\n");
    RedrawWindow( hchild, NULL, 0, RDW_INVALIDATE | RDW_ERASE | RDW_FRAME );
    SetWindowPos( hparent, 0, 0, 0, 0, 0, SWP_NOSIZE | SWP_NOMOVE |
                  SWP_NOACTIVATE | SWP_NOZORDER | SWP_FRAMECHANGED );
    while (PeekMessage( &msg, 0, 0, 0, PM_REMOVE )) DispatchMessage( &msg );
    ok_sequence(WmSWP_FrameChanged_clip, "SetWindowPos:FrameChanged_clip", FALSE );

    UpdateWindow( hparent );
    while (PeekMessage( &msg, 0, 0, 0, PM_REMOVE )) DispatchMessage( &msg );
    flush_sequence();
    trace("testing SWP_FRAMECHANGED|SWP_DEFERERASE on parent with WS_CLIPCHILDREN\n");
    RedrawWindow( hchild, NULL, 0, RDW_INVALIDATE | RDW_ERASE | RDW_FRAME );
    SetWindowPos( hparent, 0, 0, 0, 0, 0, SWP_NOSIZE | SWP_NOMOVE | SWP_DEFERERASE |
                  SWP_NOACTIVATE | SWP_NOZORDER | SWP_FRAMECHANGED );
    while (PeekMessage( &msg, 0, 0, 0, PM_REMOVE )) DispatchMessage( &msg );
    ok_sequence(WmSWP_FrameChangedDeferErase, "SetWindowPos:FrameChangedDeferErase", FALSE );

    SetWindowLong( hparent, GWL_STYLE, GetWindowLong(hparent,GWL_STYLE) & ~WS_CLIPCHILDREN );
    ok_sequence( WmSetParentStyle, "WmSetParentStyle", FALSE );
    RedrawWindow( hparent, NULL, 0, RDW_INTERNALPAINT );
    while (PeekMessage( &msg, 0, 0, 0, PM_REMOVE )) DispatchMessage( &msg );
    ok_sequence( WmParentPaint, "WmParentPaint", FALSE );

    assert( !(GetWindowLong(hparent, GWL_STYLE) & WS_CLIPCHILDREN) );
    UpdateWindow( hparent );
    while (PeekMessage( &msg, 0, 0, 0, PM_REMOVE )) DispatchMessage( &msg );
    flush_sequence();
    trace("testing SWP_FRAMECHANGED on parent without WS_CLIPCHILDREN\n");
    RedrawWindow( hchild, NULL, 0, RDW_INVALIDATE | RDW_ERASE | RDW_FRAME );
    SetWindowPos( hparent, 0, 0, 0, 0, 0, SWP_NOSIZE | SWP_NOMOVE |
                  SWP_NOACTIVATE | SWP_NOZORDER | SWP_FRAMECHANGED );
    while (PeekMessage( &msg, 0, 0, 0, PM_REMOVE )) DispatchMessage( &msg );
    ok_sequence(WmSWP_FrameChanged_noclip, "SetWindowPos:FrameChanged_noclip", FALSE );

    UpdateWindow( hparent );
    while (PeekMessage( &msg, 0, 0, 0, PM_REMOVE )) DispatchMessage( &msg );
    flush_sequence();
    trace("testing SWP_FRAMECHANGED|SWP_DEFERERASE on parent without WS_CLIPCHILDREN\n");
    RedrawWindow( hchild, NULL, 0, RDW_INVALIDATE | RDW_ERASE | RDW_FRAME );
    SetWindowPos( hparent, 0, 0, 0, 0, 0, SWP_NOSIZE | SWP_NOMOVE | SWP_DEFERERASE |
                  SWP_NOACTIVATE | SWP_NOZORDER | SWP_FRAMECHANGED );
    while (PeekMessage( &msg, 0, 0, 0, PM_REMOVE )) DispatchMessage( &msg );
    ok_sequence(WmSWP_FrameChangedDeferErase, "SetWindowPos:FrameChangedDeferErase", FALSE );

    log_all_parent_messages--;
    DestroyWindow( hparent );
    ok(!IsWindow(hchild), "child must be destroyed with its parent\n");

    DeleteObject( hrgn );
    DeleteObject( hrgn2 );
}

struct wnd_event
{
    HWND hwnd;
    HANDLE event;
};

static DWORD WINAPI thread_proc(void *param)
{
    MSG msg;
    struct wnd_event *wnd_event = (struct wnd_event *)param;

    wnd_event->hwnd = CreateWindowExA(0, "TestWindowClass", "window caption text", WS_OVERLAPPEDWINDOW,
                                      100, 100, 200, 200, 0, 0, 0, NULL);
    ok(wnd_event->hwnd != 0, "Failed to create overlapped window\n");

    SetEvent(wnd_event->event);

    while (GetMessage(&msg, 0, 0, 0))
    {
	TranslateMessage(&msg);
	DispatchMessage(&msg);
    }

    ok(IsWindow(wnd_event->hwnd), "window should still exist\n");

    return 0;
}

static void test_interthread_messages(void)
{
    HANDLE hThread;
    DWORD tid;
    WNDPROC proc;
    MSG msg;
    char buf[256];
    int len, expected_len;
    struct wnd_event wnd_event;
    BOOL ret;

    wnd_event.event = CreateEventW(NULL, 0, 0, NULL);
    if (!wnd_event.event)
    {
        trace("skipping interthread message test under win9x\n");
        return;
    }

    hThread = CreateThread(NULL, 0, thread_proc, &wnd_event, 0, &tid);
    ok(hThread != NULL, "CreateThread failed, error %ld\n", GetLastError());

    ok(WaitForSingleObject(wnd_event.event, INFINITE) == WAIT_OBJECT_0, "WaitForSingleObject failed\n");

    CloseHandle(wnd_event.event);

    SetLastError(0xdeadbeef);
    ok(!DestroyWindow(wnd_event.hwnd), "DestroyWindow succeded\n");
    ok(GetLastError() == ERROR_ACCESS_DENIED, "wrong error code %ld\n", GetLastError());

    proc = (WNDPROC)GetWindowLongPtrA(wnd_event.hwnd, GWLP_WNDPROC);
    ok(proc != NULL, "GetWindowLongPtrA(GWLP_WNDPROC) error %ld\n", GetLastError());

    expected_len = lstrlenA("window caption text");
    memset(buf, 0, sizeof(buf));
    SetLastError(0xdeadbeef);
    len = CallWindowProcA(proc, wnd_event.hwnd, WM_GETTEXT, sizeof(buf), (LPARAM)buf);
    ok(len == expected_len, "CallWindowProcA(WM_GETTEXT) error %ld, len %d, expected len %d\n", GetLastError(), len, expected_len);
    ok(!lstrcmpA(buf, "window caption text"), "window text mismatch\n");

    msg.hwnd = wnd_event.hwnd;
    msg.message = WM_GETTEXT;
    msg.wParam = sizeof(buf);
    msg.lParam = (LPARAM)buf;
    memset(buf, 0, sizeof(buf));
    SetLastError(0xdeadbeef);
    len = DispatchMessageA(&msg);
    ok(!len && GetLastError() == ERROR_MESSAGE_SYNC_ONLY,
       "DispatchMessageA(WM_GETTEXT) succeded on another thread window: ret %d, error %ld\n", len, GetLastError());

    /* the following test causes an exception in user.exe under win9x */
    msg.hwnd = wnd_event.hwnd;
    msg.message = WM_TIMER;
    msg.wParam = 0;
    msg.lParam = GetWindowLongPtrA(wnd_event.hwnd, GWLP_WNDPROC);
    SetLastError(0xdeadbeef);
    len = DispatchMessageA(&msg);
    ok(!len && GetLastError() == 0xdeadbeef,
       "DispatchMessageA(WM_TIMER) failed on another thread window: ret %d, error %ld\n", len, GetLastError());

    ret = PostMessageA(wnd_event.hwnd, WM_QUIT, 0, 0);
    ok( ret, "PostMessageA(WM_QUIT) error %ld\n", GetLastError());

    ok(WaitForSingleObject(hThread, INFINITE) == WAIT_OBJECT_0, "WaitForSingleObject failed\n");
    CloseHandle(hThread);

    ok(!IsWindow(wnd_event.hwnd), "window should be destroyed on thread exit\n");
}


static const struct message WmVkN[] = {
    { WM_KEYDOWN, wparam|lparam, 'N', 1 },
    { WM_KEYDOWN, sent|wparam|lparam, 'N', 1 },
    { WM_CHAR, wparam|lparam, 'n', 1 },
    { WM_COMMAND, sent|wparam|lparam, MAKEWPARAM(1002,1), 0 },
    { WM_KEYUP, wparam|lparam, 'N', 0xc0000001 },
    { WM_KEYUP, sent|wparam|lparam, 'N', 0xc0000001 },
    { 0 }
};
static const struct message WmShiftVkN[] = {
    { WM_KEYDOWN, wparam|lparam, VK_SHIFT, 1 },
    { WM_KEYDOWN, sent|wparam|lparam, VK_SHIFT, 1 },
    { WM_KEYDOWN, wparam|lparam, 'N', 1 },
    { WM_KEYDOWN, sent|wparam|lparam, 'N', 1 },
    { WM_CHAR, wparam|lparam, 'N', 1 },
    { WM_COMMAND, sent|wparam|lparam, MAKEWPARAM(1001,1), 0 },
    { WM_KEYUP, wparam|lparam, 'N', 0xc0000001 },
    { WM_KEYUP, sent|wparam|lparam, 'N', 0xc0000001 },
    { WM_KEYUP, wparam|lparam, VK_SHIFT, 0xc0000001 },
    { WM_KEYUP, sent|wparam|lparam, VK_SHIFT, 0xc0000001 },
    { 0 }
};
static const struct message WmCtrlVkN[] = {
    { WM_KEYDOWN, wparam|lparam, VK_CONTROL, 1 },
    { WM_KEYDOWN, sent|wparam|lparam, VK_CONTROL, 1 },
    { WM_KEYDOWN, wparam|lparam, 'N', 1 },
    { WM_KEYDOWN, sent|wparam|lparam, 'N', 1 },
    { WM_CHAR, wparam|lparam, 0x000e, 1 },
    { WM_COMMAND, sent|wparam|lparam, MAKEWPARAM(1000,1), 0 },
    { WM_KEYUP, wparam|lparam, 'N', 0xc0000001 },
    { WM_KEYUP, sent|wparam|lparam, 'N', 0xc0000001 },
    { WM_KEYUP, wparam|lparam, VK_CONTROL, 0xc0000001 },
    { WM_KEYUP, sent|wparam|lparam, VK_CONTROL, 0xc0000001 },
    { 0 }
};
static const struct message WmCtrlVkN_2[] = {
    { WM_KEYDOWN, wparam|lparam, VK_CONTROL, 1 },
    { WM_KEYDOWN, sent|wparam|lparam, VK_CONTROL, 1 },
    { WM_KEYDOWN, wparam|lparam, 'N', 1 },
    { WM_COMMAND, sent|wparam|lparam, MAKEWPARAM(1000,1), 0 },
    { WM_KEYUP, wparam|lparam, 'N', 0xc0000001 },
    { WM_KEYUP, sent|wparam|lparam, 'N', 0xc0000001 },
    { WM_KEYUP, wparam|lparam, VK_CONTROL, 0xc0000001 },
    { WM_KEYUP, sent|wparam|lparam, VK_CONTROL, 0xc0000001 },
    { 0 }
};
static const struct message WmAltVkN[] = {
    { WM_SYSKEYDOWN, wparam|lparam, VK_MENU, 0x20000001 },
    { WM_SYSKEYDOWN, sent|wparam|lparam, VK_MENU, 0x20000001 },
    { WM_SYSKEYDOWN, wparam|lparam, 'N', 0x20000001 },
    { WM_SYSKEYDOWN, sent|wparam|lparam, 'N', 0x20000001 },
    { WM_SYSCHAR, wparam|lparam, 'n', 0x20000001 },
    { WM_SYSCHAR, sent|wparam|lparam, 'n', 0x20000001 },
    { WM_SYSCOMMAND, sent|defwinproc|wparam|lparam, SC_KEYMENU, 'n' },
    { HCBT_SYSCOMMAND, hook },
    { WM_ENTERMENULOOP, sent|defwinproc|wparam|lparam, 0, 0 },
    { EVENT_SYSTEM_CAPTURESTART, winevent_hook|wparam|lparam, 0, 0 },
    { WM_INITMENU, sent|defwinproc },
    { EVENT_SYSTEM_MENUSTART, winevent_hook|wparam|lparam, OBJID_SYSMENU, 0 },
    { WM_MENUCHAR, sent|defwinproc|wparam, MAKEWPARAM('n',MF_SYSMENU) },
    { EVENT_SYSTEM_CAPTUREEND, winevent_hook|wparam|lparam, 0, 0 },
    { WM_CAPTURECHANGED, sent|defwinproc },
    { WM_MENUSELECT, sent|defwinproc|wparam, MAKEWPARAM(0,0xffff) },
    { EVENT_SYSTEM_MENUEND, winevent_hook|wparam|lparam, OBJID_SYSMENU, 0 },
    { WM_EXITMENULOOP, sent|defwinproc },
    { WM_MENUSELECT, sent|defwinproc|wparam|optional, MAKEWPARAM(0,0xffff) }, /* Win95 bug */
    { WM_EXITMENULOOP, sent|defwinproc|optional }, /* Win95 bug */
    { WM_SYSKEYUP, wparam|lparam, 'N', 0xe0000001 },
    { WM_SYSKEYUP, sent|wparam|lparam, 'N', 0xe0000001 },
    { WM_KEYUP, wparam|lparam, VK_MENU, 0xc0000001 },
    { WM_KEYUP, sent|wparam|lparam, VK_MENU, 0xc0000001 },
    { 0 }
};
static const struct message WmAltVkN_2[] = {
    { WM_SYSKEYDOWN, wparam|lparam, VK_MENU, 0x20000001 },
    { WM_SYSKEYDOWN, sent|wparam|lparam, VK_MENU, 0x20000001 },
    { WM_SYSKEYDOWN, wparam|lparam, 'N', 0x20000001 },
    { WM_COMMAND, sent|wparam|lparam, MAKEWPARAM(1003,1), 0 },
    { WM_SYSKEYUP, wparam|lparam, 'N', 0xe0000001 },
    { WM_SYSKEYUP, sent|wparam|lparam, 'N', 0xe0000001 },
    { WM_KEYUP, wparam|lparam, VK_MENU, 0xc0000001 },
    { WM_KEYUP, sent|wparam|lparam, VK_MENU, 0xc0000001 },
    { 0 }
};
static const struct message WmCtrlAltVkN[] = {
    { WM_KEYDOWN, wparam|lparam, VK_CONTROL, 1 },
    { WM_KEYDOWN, sent|wparam|lparam, VK_CONTROL, 1 },
    { WM_KEYDOWN, wparam|lparam, VK_MENU, 0x20000001 },
    { WM_KEYDOWN, sent|wparam|lparam, VK_MENU, 0x20000001 },
    { WM_KEYDOWN, wparam|lparam, 'N', 0x20000001 },
    { WM_KEYDOWN, sent|wparam|lparam, 'N', 0x20000001 },
    { WM_KEYUP, wparam|lparam, 'N', 0xe0000001 },
    { WM_KEYUP, sent|wparam|lparam, 'N', 0xe0000001 },
    { WM_KEYUP, wparam|lparam, VK_MENU, 0xc0000001 },
    { WM_KEYUP, sent|wparam|lparam, VK_MENU, 0xc0000001 },
    { WM_KEYUP, wparam|lparam, VK_CONTROL, 0xc0000001 },
    { WM_KEYUP, sent|wparam|lparam, VK_CONTROL, 0xc0000001 },
    { 0 }
};
static const struct message WmCtrlShiftVkN[] = {
    { WM_KEYDOWN, wparam|lparam, VK_CONTROL, 1 },
    { WM_KEYDOWN, sent|wparam|lparam, VK_CONTROL, 1 },
    { WM_KEYDOWN, wparam|lparam, VK_SHIFT, 1 },
    { WM_KEYDOWN, sent|wparam|lparam, VK_SHIFT, 1 },
    { WM_KEYDOWN, wparam|lparam, 'N', 1 },
    { WM_COMMAND, sent|wparam|lparam, MAKEWPARAM(1004,1), 0 },
    { WM_KEYUP, wparam|lparam, 'N', 0xc0000001 },
    { WM_KEYUP, sent|wparam|lparam, 'N', 0xc0000001 },
    { WM_KEYUP, wparam|lparam, VK_SHIFT, 0xc0000001 },
    { WM_KEYUP, sent|wparam|lparam, VK_SHIFT, 0xc0000001 },
    { WM_KEYUP, wparam|lparam, VK_CONTROL, 0xc0000001 },
    { WM_KEYUP, sent|wparam|lparam, VK_CONTROL, 0xc0000001 },
    { 0 }
};
static const struct message WmCtrlAltShiftVkN[] = {
    { WM_KEYDOWN, wparam|lparam, VK_CONTROL, 1 },
    { WM_KEYDOWN, sent|wparam|lparam, VK_CONTROL, 1 },
    { WM_KEYDOWN, wparam|lparam, VK_MENU, 0x20000001 },
    { WM_KEYDOWN, sent|wparam|lparam, VK_MENU, 0x20000001 },
    { WM_KEYDOWN, wparam|lparam, VK_SHIFT, 0x20000001 },
    { WM_KEYDOWN, sent|wparam|lparam, VK_SHIFT, 0x20000001 },
    { WM_KEYDOWN, wparam|lparam, 'N', 0x20000001 },
    { WM_COMMAND, sent|wparam|lparam, MAKEWPARAM(1005,1), 0 },
    { WM_KEYUP, wparam|lparam, 'N', 0xe0000001 },
    { WM_KEYUP, sent|wparam|lparam, 'N', 0xe0000001 },
    { WM_KEYUP, wparam|lparam, VK_SHIFT, 0xe0000001 },
    { WM_KEYUP, sent|wparam|lparam, VK_SHIFT, 0xe0000001 },
    { WM_KEYUP, wparam|lparam, VK_MENU, 0xc0000001 },
    { WM_KEYUP, sent|wparam|lparam, VK_MENU, 0xc0000001 },
    { WM_KEYUP, wparam|lparam, VK_CONTROL, 0xc0000001 },
    { WM_KEYUP, sent|wparam|lparam, VK_CONTROL, 0xc0000001 },
    { 0 }
};
static const struct message WmAltPressRelease[] = {
    { WM_SYSKEYDOWN, wparam|lparam, VK_MENU, 0x20000001 },
    { WM_SYSKEYDOWN, sent|wparam|lparam, VK_MENU, 0x20000001 },
    { WM_SYSKEYUP, wparam|lparam, VK_MENU, 0xc0000001 },
    { WM_SYSKEYUP, sent|wparam|lparam, VK_MENU, 0xc0000001 },
    { WM_SYSCOMMAND, sent|defwinproc|wparam|lparam, SC_KEYMENU, 0 },
    { HCBT_SYSCOMMAND, hook },
    { WM_ENTERMENULOOP, sent|defwinproc|wparam|lparam, 0, 0 },
    { EVENT_SYSTEM_CAPTURESTART, winevent_hook|wparam|lparam, 0, 0 },
    { WM_INITMENU, sent|defwinproc },
    { EVENT_SYSTEM_MENUSTART, winevent_hook|wparam|lparam, OBJID_SYSMENU, 0 },
    { WM_MENUSELECT, sent|defwinproc|wparam, MAKEWPARAM(0,MF_SYSMENU|MF_POPUP|MF_HILITE) },
    { EVENT_OBJECT_FOCUS, winevent_hook|wparam|lparam, OBJID_SYSMENU, 1 },

    { EVENT_OBJECT_FOCUS, winevent_hook|wparam|lparam, OBJID_SYSMENU, 0 },
    { EVENT_SYSTEM_CAPTUREEND, winevent_hook|wparam|lparam, 0, 0, },
    { WM_CAPTURECHANGED, sent|defwinproc },
    { WM_MENUSELECT, sent|defwinproc|wparam|optional, MAKEWPARAM(0,0xffff) },
    { EVENT_SYSTEM_MENUEND, winevent_hook|wparam|lparam, OBJID_SYSMENU, 0 },
    { WM_EXITMENULOOP, sent|defwinproc },
    { WM_SYSKEYUP, wparam|lparam, VK_MENU, 0xc0000001 },
    { WM_SYSKEYUP, sent|wparam|lparam, VK_MENU, 0xc0000001 },
    { 0 }
};
static const struct message WmAltMouseButton[] = {
    { WM_SYSKEYDOWN, wparam|lparam, VK_MENU, 0x20000001 },
    { WM_SYSKEYDOWN, sent|wparam|lparam, VK_MENU, 0x20000001 },
    { WM_MOUSEMOVE, wparam|optional, 0, 0 },
    { WM_MOUSEMOVE, sent|wparam|optional, 0, 0 },
    { WM_LBUTTONDOWN, wparam, MK_LBUTTON, 0 },
    { WM_LBUTTONDOWN, sent|wparam, MK_LBUTTON, 0 },
    { WM_LBUTTONUP, wparam, 0, 0 },
    { WM_LBUTTONUP, sent|wparam, 0, 0 },
    { WM_SYSKEYUP, wparam|lparam, VK_MENU, 0xc0000001 },
    { WM_SYSKEYUP, sent|wparam|lparam, VK_MENU, 0xc0000001 },
    { 0 }
};
static const struct message WmF1Seq[] = {
    { WM_KEYDOWN, wparam|lparam, VK_F1, 1 },
    { WM_KEYDOWN, sent|wparam|lparam, VK_F1, 0x00000001 },
    { 0x4d, wparam|lparam, 0, 0 },
    { 0x4d, sent|wparam|lparam, 0, 0 },
    { WM_HELP, sent|defwinproc },
    { WM_KEYUP, wparam|lparam, VK_F1, 0xc0000001 },
    { WM_KEYUP, sent|wparam|lparam, VK_F1, 0xc0000001 },
    { 0 }
};

static void pump_msg_loop(HWND hwnd, HACCEL hAccel)
{
    MSG msg;

    while (PeekMessageA(&msg, 0, 0, 0, PM_REMOVE))
    {
        struct message log_msg;

        trace("accel: %p, %04x, %08x, %08lx\n", msg.hwnd, msg.message, msg.wParam, msg.lParam);

        /* ignore some unwanted messages */
        if (msg.message == WM_MOUSEMOVE ||
            msg.message == WM_GETICON ||
            msg.message == WM_DEVICECHANGE)
            continue;

        log_msg.message = msg.message;
        log_msg.flags = wparam|lparam;
        log_msg.wParam = msg.wParam;
        log_msg.lParam = msg.lParam;
        add_message(&log_msg);

        if (!hAccel || !TranslateAccelerator(hwnd, hAccel, &msg))
        {
            TranslateMessage(&msg);
            DispatchMessage(&msg);
        }
    }
}

static void test_accelerators(void)
{
    RECT rc;
    SHORT state;
    HACCEL hAccel;
    HWND hwnd = CreateWindowExA(0, "TestWindowClass", NULL, WS_OVERLAPPEDWINDOW | WS_VISIBLE,
                                100, 100, 200, 200, 0, 0, 0, NULL);
    BOOL ret;

    assert(hwnd != 0);
    UpdateWindow(hwnd);
    SetFocus(hwnd);
    ok(GetFocus() == hwnd, "wrong focus window %p\n", GetFocus());

    state = GetKeyState(VK_SHIFT);
    ok(!(state & 0x8000), "wrong Shift state %04x\n", state);
    state = GetKeyState(VK_CAPITAL);
    ok(state == 0, "wrong CapsLock state %04x\n", state);

    hAccel = LoadAccelerators(GetModuleHandleA(0), MAKEINTRESOURCE(1));
    assert(hAccel != 0);

    pump_msg_loop(hwnd, 0);
    flush_sequence();

    trace("testing VK_N press/release\n");
    flush_sequence();
    keybd_event('N', 0, 0, 0);
    keybd_event('N', 0, KEYEVENTF_KEYUP, 0);
    pump_msg_loop(hwnd, hAccel);
    ok_sequence(WmVkN, "VK_N press/release", FALSE);

    trace("testing Shift+VK_N press/release\n");
    flush_sequence();
    keybd_event(VK_SHIFT, 0, 0, 0);
    keybd_event('N', 0, 0, 0);
    keybd_event('N', 0, KEYEVENTF_KEYUP, 0);
    keybd_event(VK_SHIFT, 0, KEYEVENTF_KEYUP, 0);
    pump_msg_loop(hwnd, hAccel);
    ok_sequence(WmShiftVkN, "Shift+VK_N press/release", FALSE);

    trace("testing Ctrl+VK_N press/release\n");
    flush_sequence();
    keybd_event(VK_CONTROL, 0, 0, 0);
    keybd_event('N', 0, 0, 0);
    keybd_event('N', 0, KEYEVENTF_KEYUP, 0);
    keybd_event(VK_CONTROL, 0, KEYEVENTF_KEYUP, 0);
    pump_msg_loop(hwnd, hAccel);
    ok_sequence(WmCtrlVkN, "Ctrl+VK_N press/release", FALSE);

    trace("testing Alt+VK_N press/release\n");
    flush_sequence();
    keybd_event(VK_MENU, 0, 0, 0);
    keybd_event('N', 0, 0, 0);
    keybd_event('N', 0, KEYEVENTF_KEYUP, 0);
    keybd_event(VK_MENU, 0, KEYEVENTF_KEYUP, 0);
    pump_msg_loop(hwnd, hAccel);
    ok_sequence(WmAltVkN, "Alt+VK_N press/release", FALSE);

    trace("testing Ctrl+Alt+VK_N press/release 1\n");
    flush_sequence();
    keybd_event(VK_CONTROL, 0, 0, 0);
    keybd_event(VK_MENU, 0, 0, 0);
    keybd_event('N', 0, 0, 0);
    keybd_event('N', 0, KEYEVENTF_KEYUP, 0);
    keybd_event(VK_MENU, 0, KEYEVENTF_KEYUP, 0);
    keybd_event(VK_CONTROL, 0, KEYEVENTF_KEYUP, 0);
    pump_msg_loop(hwnd, hAccel);
    ok_sequence(WmCtrlAltVkN, "Ctrl+Alt+VK_N press/release 1", FALSE);

    ret = DestroyAcceleratorTable(hAccel);
    ok( ret, "DestroyAcceleratorTable error %ld\n", GetLastError());

    hAccel = LoadAccelerators(GetModuleHandleA(0), MAKEINTRESOURCE(2));
    assert(hAccel != 0);

    trace("testing VK_N press/release\n");
    flush_sequence();
    keybd_event('N', 0, 0, 0);
    keybd_event('N', 0, KEYEVENTF_KEYUP, 0);
    pump_msg_loop(hwnd, hAccel);
    ok_sequence(WmVkN, "VK_N press/release", FALSE);

    trace("testing Shift+VK_N press/release\n");
    flush_sequence();
    keybd_event(VK_SHIFT, 0, 0, 0);
    keybd_event('N', 0, 0, 0);
    keybd_event('N', 0, KEYEVENTF_KEYUP, 0);
    keybd_event(VK_SHIFT, 0, KEYEVENTF_KEYUP, 0);
    pump_msg_loop(hwnd, hAccel);
    ok_sequence(WmShiftVkN, "Shift+VK_N press/release", FALSE);

    trace("testing Ctrl+VK_N press/release 2\n");
    flush_sequence();
    keybd_event(VK_CONTROL, 0, 0, 0);
    keybd_event('N', 0, 0, 0);
    keybd_event('N', 0, KEYEVENTF_KEYUP, 0);
    keybd_event(VK_CONTROL, 0, KEYEVENTF_KEYUP, 0);
    pump_msg_loop(hwnd, hAccel);
    ok_sequence(WmCtrlVkN_2, "Ctrl+VK_N press/release 2", FALSE);

    trace("testing Alt+VK_N press/release 2\n");
    flush_sequence();
    keybd_event(VK_MENU, 0, 0, 0);
    keybd_event('N', 0, 0, 0);
    keybd_event('N', 0, KEYEVENTF_KEYUP, 0);
    keybd_event(VK_MENU, 0, KEYEVENTF_KEYUP, 0);
    pump_msg_loop(hwnd, hAccel);
    ok_sequence(WmAltVkN_2, "Alt+VK_N press/release 2", FALSE);

    trace("testing Ctrl+Alt+VK_N press/release 2\n");
    flush_sequence();
    keybd_event(VK_CONTROL, 0, 0, 0);
    keybd_event(VK_MENU, 0, 0, 0);
    keybd_event('N', 0, 0, 0);
    keybd_event('N', 0, KEYEVENTF_KEYUP, 0);
    keybd_event(VK_MENU, 0, KEYEVENTF_KEYUP, 0);
    keybd_event(VK_CONTROL, 0, KEYEVENTF_KEYUP, 0);
    pump_msg_loop(hwnd, hAccel);
    ok_sequence(WmCtrlAltVkN, "Ctrl+Alt+VK_N press/release 2", FALSE);

    trace("testing Ctrl+Shift+VK_N press/release\n");
    flush_sequence();
    keybd_event(VK_CONTROL, 0, 0, 0);
    keybd_event(VK_SHIFT, 0, 0, 0);
    keybd_event('N', 0, 0, 0);
    keybd_event('N', 0, KEYEVENTF_KEYUP, 0);
    keybd_event(VK_SHIFT, 0, KEYEVENTF_KEYUP, 0);
    keybd_event(VK_CONTROL, 0, KEYEVENTF_KEYUP, 0);
    pump_msg_loop(hwnd, hAccel);
    ok_sequence(WmCtrlShiftVkN, "Ctrl+Shift+VK_N press/release", FALSE);

    trace("testing Ctrl+Alt+Shift+VK_N press/release\n");
    flush_sequence();
    keybd_event(VK_CONTROL, 0, 0, 0);
    keybd_event(VK_MENU, 0, 0, 0);
    keybd_event(VK_SHIFT, 0, 0, 0);
    keybd_event('N', 0, 0, 0);
    keybd_event('N', 0, KEYEVENTF_KEYUP, 0);
    keybd_event(VK_SHIFT, 0, KEYEVENTF_KEYUP, 0);
    keybd_event(VK_MENU, 0, KEYEVENTF_KEYUP, 0);
    keybd_event(VK_CONTROL, 0, KEYEVENTF_KEYUP, 0);
    pump_msg_loop(hwnd, hAccel);
    ok_sequence(WmCtrlAltShiftVkN, "Ctrl+Alt+Shift+VK_N press/release", FALSE);

    ret = DestroyAcceleratorTable(hAccel);
    ok( ret, "DestroyAcceleratorTable error %ld\n", GetLastError());

    trace("testing Alt press/release\n");
    flush_sequence();
    keybd_event(VK_MENU, 0, 0, 0);
    keybd_event(VK_MENU, 0, KEYEVENTF_KEYUP, 0);
    keybd_event(VK_MENU, 0, 0, 0);
    keybd_event(VK_MENU, 0, KEYEVENTF_KEYUP, 0);
    pump_msg_loop(hwnd, 0);
    /* this test doesn't pass in Wine for managed windows */
    ok_sequence(WmAltPressRelease, "Alt press/release", TRUE);

    trace("testing Alt+MouseButton press/release\n");
    /* first, move mouse pointer inside of the window client area */
    GetClientRect(hwnd, &rc);
    MapWindowPoints(hwnd, 0, (LPPOINT)&rc, 2);
    rc.left += (rc.right - rc.left)/2;
    rc.top += (rc.bottom - rc.top)/2;
    SetCursorPos(rc.left, rc.top);

    pump_msg_loop(hwnd, 0);
    flush_sequence();
    keybd_event(VK_MENU, 0, 0, 0);
    mouse_event(MOUSEEVENTF_LEFTDOWN, 0, 0, 0, 0);
    mouse_event(MOUSEEVENTF_LEFTUP, 0, 0, 0, 0);
    keybd_event(VK_MENU, 0, KEYEVENTF_KEYUP, 0);
    pump_msg_loop(hwnd, 0);
    ok_sequence(WmAltMouseButton, "Alt+MouseButton press/release", FALSE);

    keybd_event(VK_F1, 0, 0, 0);
    keybd_event(VK_F1, 0, KEYEVENTF_KEYUP, 0);
    pump_msg_loop(hwnd, 0);
    ok_sequence(WmF1Seq, "F1 press/release", TRUE);

    DestroyWindow(hwnd);
}

/************* window procedures ********************/

static LRESULT MsgCheckProc (BOOL unicode, HWND hwnd, UINT message, 
			     WPARAM wParam, LPARAM lParam)
{
    static long defwndproc_counter = 0;
    static long beginpaint_counter = 0;
    LRESULT ret;
    struct message msg;

    trace("%p, %04x, %08x, %08lx\n", hwnd, message, wParam, lParam);

    /* explicitly ignore WM_GETICON message */
    if (message == WM_GETICON) return 0;

    switch (message)
    {
	case WM_ENABLE:
	{
	    LONG style = GetWindowLongA(hwnd, GWL_STYLE);
	    ok((BOOL)wParam == !(style & WS_DISABLED),
		"wrong WS_DISABLED state: %d != %d\n", wParam, !(style & WS_DISABLED));
	    break;
	}

	case WM_CAPTURECHANGED:
	    if (test_DestroyWindow_flag)
	    {
		DWORD style = GetWindowLongA(hwnd, GWL_STYLE);
		if (style & WS_CHILD)
		    lParam = GetWindowLongPtrA(hwnd, GWLP_ID);
		else if (style & WS_POPUP)
		    lParam = WND_POPUP_ID;
		else
		    lParam = WND_PARENT_ID;
	    }
	    break;

	case WM_NCDESTROY:
	{
	    HWND capture;

	    ok(!GetWindow(hwnd, GW_CHILD), "children should be unlinked at this point\n");
	    capture = GetCapture();
	    if (capture)
	    {
		ok(capture == hwnd, "capture should NOT be released at this point (capture %p)\n", capture);
		trace("current capture %p, releasing...\n", capture);
		ReleaseCapture();
	    }
	}
	/* fall through */
	case WM_DESTROY:
            if (pGetAncestor)
	        ok(pGetAncestor(hwnd, GA_PARENT) != 0, "parent should NOT be unlinked at this point\n");
	    if (test_DestroyWindow_flag)
	    {
		DWORD style = GetWindowLongA(hwnd, GWL_STYLE);
		if (style & WS_CHILD)
		    lParam = GetWindowLongPtrA(hwnd, GWLP_ID);
		else if (style & WS_POPUP)
		    lParam = WND_POPUP_ID;
		else
		    lParam = WND_PARENT_ID;
	    }
	    break;

	/* test_accelerators() depends on this */
	case WM_NCHITTEST:
	    return HTCLIENT;
    
	/* ignore */
	case WM_MOUSEMOVE:
	case WM_SETCURSOR:
	case WM_DEVICECHANGE:
	    return 0;

        case WM_WINDOWPOSCHANGING:
        case WM_WINDOWPOSCHANGED:
        {
            WINDOWPOS *winpos = (WINDOWPOS *)lParam;

            trace("%s\n", (message == WM_WINDOWPOSCHANGING) ? "WM_WINDOWPOSCHANGING" : "WM_WINDOWPOSCHANGED");
            trace("%p after %p, x %d, y %d, cx %d, cy %d flags %08x\n",
                  winpos->hwnd, winpos->hwndInsertAfter,
                  winpos->x, winpos->y, winpos->cx, winpos->cy, winpos->flags);

            /* Log only documented flags, win2k uses 0x1000 and 0x2000
             * in the high word for internal purposes
             */
            wParam = winpos->flags & 0xffff;
            break;
        }
    }

    msg.message = message;
    msg.flags = sent|wparam|lparam;
    if (defwndproc_counter) msg.flags |= defwinproc;
    if (beginpaint_counter) msg.flags |= beginpaint;
    msg.wParam = wParam;
    msg.lParam = lParam;
    add_message(&msg);

    if (message == WM_GETMINMAXINFO && (GetWindowLongA(hwnd, GWL_STYLE) & WS_CHILD))
    {
	HWND parent = GetParent(hwnd);
	RECT rc;
	MINMAXINFO *minmax = (MINMAXINFO *)lParam;

	GetClientRect(parent, &rc);
	trace("parent %p client size = (%ld x %ld)\n", parent, rc.right, rc.bottom);

	trace("ptReserved = (%ld,%ld)\n"
	      "ptMaxSize = (%ld,%ld)\n"
	      "ptMaxPosition = (%ld,%ld)\n"
	      "ptMinTrackSize = (%ld,%ld)\n"
	      "ptMaxTrackSize = (%ld,%ld)\n",
	      minmax->ptReserved.x, minmax->ptReserved.y,
	      minmax->ptMaxSize.x, minmax->ptMaxSize.y,
	      minmax->ptMaxPosition.x, minmax->ptMaxPosition.y,
	      minmax->ptMinTrackSize.x, minmax->ptMinTrackSize.y,
	      minmax->ptMaxTrackSize.x, minmax->ptMaxTrackSize.y);

	ok(minmax->ptMaxSize.x == rc.right, "default width of maximized child %ld != %ld\n",
	   minmax->ptMaxSize.x, rc.right);
	ok(minmax->ptMaxSize.y == rc.bottom, "default height of maximized child %ld != %ld\n",
	   minmax->ptMaxSize.y, rc.bottom);
    }

    if (message == WM_PAINT)
    {
        PAINTSTRUCT ps;
        beginpaint_counter++;
        BeginPaint( hwnd, &ps );
        beginpaint_counter--;
        EndPaint( hwnd, &ps );
        return 0;
    }

    defwndproc_counter++;
    ret = unicode ? DefWindowProcW(hwnd, message, wParam, lParam) 
		  : DefWindowProcA(hwnd, message, wParam, lParam);
    defwndproc_counter--;

    return ret;
}

static LRESULT WINAPI MsgCheckProcA(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
{
    return MsgCheckProc (FALSE, hwnd, message, wParam, lParam);
}

static LRESULT WINAPI MsgCheckProcW(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
{
    return MsgCheckProc (TRUE, hwnd, message, wParam, lParam);
}

static LRESULT WINAPI PopupMsgCheckProcA(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
{
    static long defwndproc_counter = 0;
    LRESULT ret;
    struct message msg;

    trace("popup: %p, %04x, %08x, %08lx\n", hwnd, message, wParam, lParam);

    /* explicitly ignore WM_GETICON message */
    if (message == WM_GETICON) return 0;

    msg.message = message;
    msg.flags = sent|wparam|lparam;
    if (defwndproc_counter) msg.flags |= defwinproc;
    msg.wParam = wParam;
    msg.lParam = lParam;
    add_message(&msg);

    if (message == WM_CREATE)
    {
	DWORD style = GetWindowLongA(hwnd, GWL_STYLE) | WS_VISIBLE;
	SetWindowLongA(hwnd, GWL_STYLE, style);
    }

    defwndproc_counter++;
    ret = DefWindowProcA(hwnd, message, wParam, lParam);
    defwndproc_counter--;

    return ret;
}

static LRESULT WINAPI ParentMsgCheckProcA(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
{
    static long defwndproc_counter = 0;
    static long beginpaint_counter = 0;
    LRESULT ret;
    struct message msg;

    trace("parent: %p, %04x, %08x, %08lx\n", hwnd, message, wParam, lParam);

    /* explicitly ignore WM_GETICON message */
    if (message == WM_GETICON) return 0;

    if (log_all_parent_messages ||
        message == WM_PARENTNOTIFY || message == WM_CANCELMODE ||
	message == WM_SETFOCUS || message == WM_KILLFOCUS ||
	message == WM_ENABLE ||	message == WM_ENTERIDLE ||
	message == WM_IME_SETCONTEXT)
    {
        switch (message)
        {
            case WM_ERASEBKGND:
            {
                RECT rc;
                INT ret = GetClipBox((HDC)wParam, &rc);

                trace("WM_ERASEBKGND: GetClipBox()=%d, (%ld,%ld-%ld,%ld)\n",
                       ret, rc.left, rc.top, rc.right, rc.bottom);
                break;
            }

            case WM_WINDOWPOSCHANGING:
            case WM_WINDOWPOSCHANGED:
            {
                WINDOWPOS *winpos = (WINDOWPOS *)lParam;

                trace("%s\n", (message == WM_WINDOWPOSCHANGING) ? "WM_WINDOWPOSCHANGING" : "WM_WINDOWPOSCHANGED");
                trace("%p after %p, x %d, y %d, cx %d, cy %d flags %08x\n",
                      winpos->hwnd, winpos->hwndInsertAfter,
                      winpos->x, winpos->y, winpos->cx, winpos->cy, winpos->flags);

                /* Log only documented flags, win2k uses 0x1000 and 0x2000
                 * in the high word for internal purposes
                 */
                wParam = winpos->flags & 0xffff;
                break;
            }
        }

        msg.message = message;
        msg.flags = sent|parent|wparam|lparam;
        if (defwndproc_counter) msg.flags |= defwinproc;
        if (beginpaint_counter) msg.flags |= beginpaint;
        msg.wParam = wParam;
        msg.lParam = lParam;
        add_message(&msg);
    }

    if (message == WM_PAINT)
    {
        PAINTSTRUCT ps;
        beginpaint_counter++;
        BeginPaint( hwnd, &ps );
        beginpaint_counter--;
        EndPaint( hwnd, &ps );
        return 0;
    }

    defwndproc_counter++;
    ret = DefWindowProcA(hwnd, message, wParam, lParam);
    defwndproc_counter--;

    return ret;
}

static LRESULT WINAPI TestDlgProcA(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
{
    static long defwndproc_counter = 0;
    LRESULT ret;
    struct message msg;

    trace("dialog: %p, %04x, %08x, %08lx\n", hwnd, message, wParam, lParam);

    /* explicitly ignore WM_GETICON message */
    if (message == WM_GETICON) return 0;

    DefDlgProcA(hwnd, DM_SETDEFID, 1, 0);
    ret = DefDlgProcA(hwnd, DM_GETDEFID, 0, 0);
    if (after_end_dialog)
        ok( ret == 0, "DM_GETDEFID should return 0 after EndDialog, got %lx\n", ret );
    else
        ok(HIWORD(ret) == DC_HASDEFID, "DM_GETDEFID should return DC_HASDEFID, got %lx\n", ret);

    switch (message)
    {
        case WM_WINDOWPOSCHANGING:
        case WM_WINDOWPOSCHANGED:
        {
            WINDOWPOS *winpos = (WINDOWPOS *)lParam;

            trace("%s\n", (message == WM_WINDOWPOSCHANGING) ? "WM_WINDOWPOSCHANGING" : "WM_WINDOWPOSCHANGED");
            trace("%p after %p, x %d, y %d, cx %d, cy %d flags %08x\n",
                  winpos->hwnd, winpos->hwndInsertAfter,
                  winpos->x, winpos->y, winpos->cx, winpos->cy, winpos->flags);

            /* Log only documented flags, win2k uses 0x1000 and 0x2000
             * in the high word for internal purposes
             */
            wParam = winpos->flags & 0xffff;
            break;
        }
    }

    msg.message = message;
    msg.flags = sent|wparam|lparam;
    if (defwndproc_counter) msg.flags |= defwinproc;
    msg.wParam = wParam;
    msg.lParam = lParam;
    add_message(&msg);

    defwndproc_counter++;
    ret = DefDlgProcA(hwnd, message, wParam, lParam);
    defwndproc_counter--;

    return ret;
}

static BOOL RegisterWindowClasses(void)
{
    WNDCLASSA cls;

    cls.style = 0;
    cls.lpfnWndProc = MsgCheckProcA;
    cls.cbClsExtra = 0;
    cls.cbWndExtra = 0;
    cls.hInstance = GetModuleHandleA(0);
    cls.hIcon = 0;
    cls.hCursor = LoadCursorA(0, (LPSTR)IDC_ARROW);
    cls.hbrBackground = GetStockObject(WHITE_BRUSH);
    cls.lpszMenuName = NULL;
    cls.lpszClassName = "TestWindowClass";
    if(!RegisterClassA(&cls)) return FALSE;

    cls.lpfnWndProc = PopupMsgCheckProcA;
    cls.lpszClassName = "TestPopupClass";
    if(!RegisterClassA(&cls)) return FALSE;

    cls.lpfnWndProc = ParentMsgCheckProcA;
    cls.lpszClassName = "TestParentClass";
    if(!RegisterClassA(&cls)) return FALSE;

    cls.lpfnWndProc = DefWindowProcA;
    cls.lpszClassName = "SimpleWindowClass";
    if(!RegisterClassA(&cls)) return FALSE;

    cls.style = CS_NOCLOSE;
    cls.lpszClassName = "NoCloseWindowClass";
    if(!RegisterClassA(&cls)) return FALSE;

    ok(GetClassInfoA(0, "#32770", &cls), "GetClassInfo failed\n");
    cls.style = 0;
    cls.hInstance = GetModuleHandleA(0);
    cls.hbrBackground = 0;
    cls.lpfnWndProc = TestDlgProcA;
    cls.lpszClassName = "TestDialogClass";
    if(!RegisterClassA(&cls)) return FALSE;

    return TRUE;
}

static HHOOK hCBT_hook;
static DWORD cbt_hook_thread_id;

static LRESULT CALLBACK cbt_hook_proc(int nCode, WPARAM wParam, LPARAM lParam) 
{ 
    static const char *CBT_code_name[10] = {
	"HCBT_MOVESIZE",
	"HCBT_MINMAX",
	"HCBT_QS",
	"HCBT_CREATEWND",
	"HCBT_DESTROYWND",
	"HCBT_ACTIVATE",
	"HCBT_CLICKSKIPPED",
	"HCBT_KEYSKIPPED",
	"HCBT_SYSCOMMAND",
	"HCBT_SETFOCUS" };
    const char *code_name = (nCode >= 0 && nCode <= HCBT_SETFOCUS) ? CBT_code_name[nCode] : "Unknown";
    HWND hwnd;
    char buf[256];

    trace("CBT: %d (%s), %08x, %08lx\n", nCode, code_name, wParam, lParam);

    ok(cbt_hook_thread_id == GetCurrentThreadId(), "we didn't ask for events from other threads\n");

    if (nCode == HCBT_SYSCOMMAND)
    {
	struct message msg;

	msg.message = nCode;
	msg.flags = hook|wparam|lparam;
	msg.wParam = wParam;
	msg.lParam = lParam;
	add_message(&msg);

	return CallNextHookEx(hCBT_hook, nCode, wParam, lParam);
    }

    if (nCode == HCBT_DESTROYWND)
    {
	if (test_DestroyWindow_flag)
	{
	    DWORD style = GetWindowLongA((HWND)wParam, GWL_STYLE);
	    if (style & WS_CHILD)
		lParam = GetWindowLongPtrA((HWND)wParam, GWLP_ID);
	    else if (style & WS_POPUP)
		lParam = WND_POPUP_ID;
	    else
		lParam = WND_PARENT_ID;
	}
    }

    /* Log also SetFocus(0) calls */
    hwnd = wParam ? (HWND)wParam : (HWND)lParam;

    if (GetClassNameA(hwnd, buf, sizeof(buf)))
    {
	if (!lstrcmpiA(buf, "TestWindowClass") ||
	    !lstrcmpiA(buf, "TestParentClass") ||
	    !lstrcmpiA(buf, "TestPopupClass") ||
	    !lstrcmpiA(buf, "SimpleWindowClass") ||
	    !lstrcmpiA(buf, "TestDialogClass") ||
	    !lstrcmpiA(buf, "MDI_frame_class") ||
	    !lstrcmpiA(buf, "MDI_client_class") ||
	    !lstrcmpiA(buf, "MDI_child_class") ||
	    !lstrcmpiA(buf, "my_button_class") ||
	    !lstrcmpiA(buf, "static") ||
	    !lstrcmpiA(buf, "#32770"))
	{
	    struct message msg;

	    msg.message = nCode;
	    msg.flags = hook|wparam|lparam;
	    msg.wParam = wParam;
	    msg.lParam = lParam;
	    add_message(&msg);
	}
    }
    return CallNextHookEx(hCBT_hook, nCode, wParam, lParam);
}

static void CALLBACK win_event_proc(HWINEVENTHOOK hevent,
				    DWORD event,
				    HWND hwnd,
				    LONG object_id,
				    LONG child_id,
				    DWORD thread_id,
				    DWORD event_time)
{
    char buf[256];

    trace("WEH:%p,event %08lx,hwnd %p,obj %08lx,id %08lx,thread %08lx,time %08lx\n",
	   hevent, event, hwnd, object_id, child_id, thread_id, event_time);

    ok(thread_id == GetCurrentThreadId(), "we didn't ask for events from other threads\n");

    /* ignore mouse cursor events */
    if (object_id == OBJID_CURSOR) return;

    if (!hwnd || GetClassNameA(hwnd, buf, sizeof(buf)))
    {
	if (!hwnd ||
	    !lstrcmpiA(buf, "TestWindowClass") ||
	    !lstrcmpiA(buf, "TestParentClass") ||
	    !lstrcmpiA(buf, "TestPopupClass") ||
	    !lstrcmpiA(buf, "SimpleWindowClass") ||
	    !lstrcmpiA(buf, "TestDialogClass") ||
	    !lstrcmpiA(buf, "MDI_frame_class") ||
	    !lstrcmpiA(buf, "MDI_client_class") ||
	    !lstrcmpiA(buf, "MDI_child_class") ||
	    !lstrcmpiA(buf, "my_button_class") ||
	    !lstrcmpiA(buf, "static") ||
	    !lstrcmpiA(buf, "#32770"))
	{
	    struct message msg;

	    msg.message = event;
	    msg.flags = winevent_hook|wparam|lparam;
	    msg.wParam = object_id;
	    msg.lParam = child_id;
	    add_message(&msg);
	}
    }
}

static const WCHAR wszUnicode[] = {'U','n','i','c','o','d','e',0};
static const WCHAR wszAnsi[] = {'U',0};

static LRESULT CALLBACK MsgConversionProcW(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
{
    switch (uMsg)
    {
    case CB_FINDSTRINGEXACT:
        trace("String: %p\n", (LPCWSTR)lParam);
        if (!lstrcmpW((LPCWSTR)lParam, wszUnicode))
            return 1;
        if (!lstrcmpW((LPCWSTR)lParam, wszAnsi))
            return 0;
        return -1;
    }
    return DefWindowProcW(hwnd, uMsg, wParam, lParam);
}

static const struct message WmGetTextLengthAfromW[] = {
    { WM_GETTEXTLENGTH, sent },
    { WM_GETTEXT, sent },
    { 0 }
};

static const WCHAR testWindowClassW[] = 
{ 'T','e','s','t','W','i','n','d','o','w','C','l','a','s','s','W',0 };

static const WCHAR dummy_window_text[] = {'d','u','m','m','y',' ','t','e','x','t',0};

/* dummy window proc for WM_GETTEXTLENGTH test */
static LRESULT CALLBACK get_text_len_proc( HWND hwnd, UINT msg, WPARAM wp, LPARAM lp )
{
    switch(msg)
    {
    case WM_GETTEXTLENGTH:
        return lstrlenW(dummy_window_text) + 37;  /* some random length */
    case WM_GETTEXT:
        lstrcpynW( (LPWSTR)lp, dummy_window_text, wp );
        return lstrlenW( (LPWSTR)lp );
    default:
        return DefWindowProcW( hwnd, msg, wp, lp );
    }
}

static void test_message_conversion(void)
{
    static const WCHAR wszMsgConversionClass[] =
        {'M','s','g','C','o','n','v','e','r','s','i','o','n','C','l','a','s','s',0};
    WNDCLASSW cls;
    LRESULT lRes;
    HWND hwnd;
    WNDPROC wndproc, newproc;
    BOOL ret;

    cls.style = 0;
    cls.lpfnWndProc = MsgConversionProcW;
    cls.cbClsExtra = 0;
    cls.cbWndExtra = 0;
    cls.hInstance = GetModuleHandleW(NULL);
    cls.hIcon = NULL;
    cls.hCursor = LoadCursorW(NULL, (LPWSTR)IDC_ARROW);
    cls.hbrBackground = (HBRUSH)(COLOR_BTNFACE+1);
    cls.lpszMenuName = NULL;
    cls.lpszClassName = wszMsgConversionClass;
    /* this call will fail on Win9x, but that doesn't matter as this test is
     * meaningless on those platforms */
    if(!RegisterClassW(&cls)) return;

    cls.style = 0;
    cls.lpfnWndProc = MsgCheckProcW;
    cls.cbClsExtra = 0;
    cls.cbWndExtra = 0;
    cls.hInstance = GetModuleHandleW(0);
    cls.hIcon = 0;
    cls.hCursor = LoadCursorW(0, (LPWSTR)IDC_ARROW);
    cls.hbrBackground = GetStockObject(WHITE_BRUSH);
    cls.lpszMenuName = NULL;
    cls.lpszClassName = testWindowClassW;
    if(!RegisterClassW(&cls)) return;

    hwnd = CreateWindowExW(0, wszMsgConversionClass, NULL, WS_OVERLAPPED,
                           100, 100, 200, 200, 0, 0, 0, NULL);
    ok(hwnd != NULL, "Window creation failed\n");

    /* {W, A} -> A */

    wndproc = (WNDPROC)GetWindowLongPtrA(hwnd, GWLP_WNDPROC);
    lRes = CallWindowProcA(wndproc, hwnd, CB_FINDSTRINGEXACT, 0, (LPARAM)wszUnicode);
    ok(lRes == 0, "String should have been converted\n");
    lRes = CallWindowProcW(wndproc, hwnd, CB_FINDSTRINGEXACT, 0, (LPARAM)wszUnicode);
    ok(lRes == 1, "String shouldn't have been converted\n");

    /* {W, A} -> W */

    wndproc = (WNDPROC)GetWindowLongPtrW(hwnd, GWLP_WNDPROC);
    lRes = CallWindowProcA(wndproc, hwnd, CB_FINDSTRINGEXACT, 0, (LPARAM)wszUnicode);
    ok(lRes == 1, "String shouldn't have been converted\n");
    lRes = CallWindowProcW(wndproc, hwnd, CB_FINDSTRINGEXACT, 0, (LPARAM)wszUnicode);
    ok(lRes == 1, "String shouldn't have been converted\n");

    /* Synchronous messages */

    lRes = SendMessageA(hwnd, CB_FINDSTRINGEXACT, 0, (LPARAM)wszUnicode);
    ok(lRes == 0, "String should have been converted\n");
    lRes = SendMessageW(hwnd, CB_FINDSTRINGEXACT, 0, (LPARAM)wszUnicode);
    ok(lRes == 1, "String shouldn't have been converted\n");

    /* Asynchronous messages */

    SetLastError(0);
    lRes = PostMessageA(hwnd, CB_FINDSTRINGEXACT, 0, (LPARAM)wszUnicode);
    ok(lRes == 0 && (GetLastError() == ERROR_MESSAGE_SYNC_ONLY || GetLastError() == ERROR_INVALID_PARAMETER),
        "PostMessage on sync only message returned %ld, last error %ld\n", lRes, GetLastError());
    SetLastError(0);
    lRes = PostMessageW(hwnd, CB_FINDSTRINGEXACT, 0, (LPARAM)wszUnicode);
    ok(lRes == 0 && (GetLastError() == ERROR_MESSAGE_SYNC_ONLY || GetLastError() == ERROR_INVALID_PARAMETER),
        "PostMessage on sync only message returned %ld, last error %ld\n", lRes, GetLastError());
    SetLastError(0);
    lRes = PostThreadMessageA(GetCurrentThreadId(), CB_FINDSTRINGEXACT, 0, (LPARAM)wszUnicode);
    ok(lRes == 0 && (GetLastError() == ERROR_MESSAGE_SYNC_ONLY || GetLastError() == ERROR_INVALID_PARAMETER),
        "PosThreadtMessage on sync only message returned %ld, last error %ld\n", lRes, GetLastError());
    SetLastError(0);
    lRes = PostThreadMessageW(GetCurrentThreadId(), CB_FINDSTRINGEXACT, 0, (LPARAM)wszUnicode);
    ok(lRes == 0 && (GetLastError() == ERROR_MESSAGE_SYNC_ONLY || GetLastError() == ERROR_INVALID_PARAMETER),
        "PosThreadtMessage on sync only message returned %ld, last error %ld\n", lRes, GetLastError());
    SetLastError(0);
    lRes = SendNotifyMessageA(hwnd, CB_FINDSTRINGEXACT, 0, (LPARAM)wszUnicode);
    ok(lRes == 0 && (GetLastError() == ERROR_MESSAGE_SYNC_ONLY || GetLastError() == ERROR_INVALID_PARAMETER),
        "SendNotifyMessage on sync only message returned %ld, last error %ld\n", lRes, GetLastError());
    SetLastError(0);
    lRes = SendNotifyMessageW(hwnd, CB_FINDSTRINGEXACT, 0, (LPARAM)wszUnicode);
    ok(lRes == 0 && (GetLastError() == ERROR_MESSAGE_SYNC_ONLY || GetLastError() == ERROR_INVALID_PARAMETER),
        "SendNotifyMessage on sync only message returned %ld, last error %ld\n", lRes, GetLastError());
    SetLastError(0);
    lRes = SendMessageCallbackA(hwnd, CB_FINDSTRINGEXACT, 0, (LPARAM)wszUnicode, NULL, 0);
    ok(lRes == 0 && (GetLastError() == ERROR_MESSAGE_SYNC_ONLY || GetLastError() == ERROR_INVALID_PARAMETER),
        "SendMessageCallback on sync only message returned %ld, last error %ld\n", lRes, GetLastError());
    SetLastError(0);
    lRes = SendMessageCallbackW(hwnd, CB_FINDSTRINGEXACT, 0, (LPARAM)wszUnicode, NULL, 0);
    ok(lRes == 0 && (GetLastError() == ERROR_MESSAGE_SYNC_ONLY || GetLastError() == ERROR_INVALID_PARAMETER),
        "SendMessageCallback on sync only message returned %ld, last error %ld\n", lRes, GetLastError());

    /* Check WM_GETTEXTLENGTH A->W behaviour, whether WM_GETTEXT is also sent or not */

    hwnd = CreateWindowW (testWindowClassW, wszUnicode,
                          WS_OVERLAPPEDWINDOW,
                          100, 100, 200, 200, 0, 0, 0, NULL);
    assert(hwnd);
    flush_sequence();
    lRes = SendMessageA (hwnd, WM_GETTEXTLENGTH, 0, 0);
    ok_sequence(WmGetTextLengthAfromW, "ANSI WM_GETTEXTLENGTH to Unicode window", FALSE);
    ok( lRes == WideCharToMultiByte( CP_ACP, 0, wszUnicode, lstrlenW(wszUnicode), NULL, 0, NULL, NULL ),
        "got bad length %ld\n", lRes );

    flush_sequence();
    lRes = CallWindowProcA( (WNDPROC)GetWindowLongPtrA( hwnd, GWLP_WNDPROC ),
                            hwnd, WM_GETTEXTLENGTH, 0, 0);
    ok_sequence(WmGetTextLengthAfromW, "ANSI WM_GETTEXTLENGTH to Unicode window", FALSE);
    ok( lRes == WideCharToMultiByte( CP_ACP, 0, wszUnicode, lstrlenW(wszUnicode), NULL, 0, NULL, NULL ),
        "got bad length %ld\n", lRes );

    wndproc = (WNDPROC)SetWindowLongPtrW( hwnd, GWLP_WNDPROC, (LONG_PTR)get_text_len_proc );
    newproc = (WNDPROC)GetWindowLongPtrA( hwnd, GWLP_WNDPROC );
    lRes = CallWindowProcA( newproc, hwnd, WM_GETTEXTLENGTH, 0, 0 );
    ok( lRes == WideCharToMultiByte( CP_ACP, 0, dummy_window_text, lstrlenW(dummy_window_text),
                                     NULL, 0, NULL, NULL ),
        "got bad length %ld\n", lRes );

    SetWindowLongPtrW( hwnd, GWLP_WNDPROC, (LONG_PTR)wndproc );  /* restore old wnd proc */
    lRes = CallWindowProcA( newproc, hwnd, WM_GETTEXTLENGTH, 0, 0 );
    ok( lRes == WideCharToMultiByte( CP_ACP, 0, dummy_window_text, lstrlenW(dummy_window_text),
                                     NULL, 0, NULL, NULL ),
        "got bad length %ld\n", lRes );

    ret = DestroyWindow(hwnd);
    ok( ret, "DestroyWindow() error %ld\n", GetLastError());
}

typedef struct _thread_info
{
    HWND hWnd;
    HANDLE handles[2];
    DWORD id;
} thread_info;

static VOID CALLBACK tfunc(HWND hwnd, UINT uMsg, UINT id, DWORD dwTime)
{
}

#define TIMER_ID  0x19

static DWORD WINAPI timer_thread_proc(LPVOID x)
{
    thread_info *info = x;
    DWORD r;

    r = KillTimer(info->hWnd, 0x19);
    ok(r,"KillTimer failed in thread\n");
    r = SetTimer(info->hWnd,TIMER_ID,10000,tfunc);
    ok(r,"SetTimer failed in thread\n");
    ok(r==TIMER_ID,"SetTimer id different\n");
    r = SetEvent(info->handles[0]);
    ok(r,"SetEvent failed in thread\n");
    return 0;
}

static void test_timers(void)
{
    thread_info info;
    DWORD id;

    info.hWnd = CreateWindow ("TestWindowClass", NULL,
       WS_OVERLAPPEDWINDOW ,
       CW_USEDEFAULT, CW_USEDEFAULT, 300, 300, 0,
       NULL, NULL, 0);

    info.id = SetTimer(info.hWnd,TIMER_ID,10000,tfunc);
    ok(info.id, "SetTimer failed\n");
    ok(info.id==TIMER_ID, "SetTimer timer ID different\n");
    info.handles[0] = CreateEvent(NULL,0,0,NULL);
    info.handles[1] = CreateThread(NULL,0,timer_thread_proc,&info,0,&id);

    WaitForMultipleObjects(2, info.handles, FALSE, INFINITE);

    WaitForSingleObject(info.handles[1], INFINITE);

    CloseHandle(info.handles[0]);
    CloseHandle(info.handles[1]);

    ok( KillTimer(info.hWnd, TIMER_ID), "KillTimer failed\n");

    ok(DestroyWindow(info.hWnd), "failed to destroy window\n");
}

/* Various win events with arbitrary parameters */
static const struct message WmWinEventsSeq[] = {
    { EVENT_SYSTEM_SOUND, winevent_hook|wparam|lparam, OBJID_WINDOW, 0 },
    { EVENT_SYSTEM_ALERT, winevent_hook|wparam|lparam, OBJID_SYSMENU, 1 },
    { EVENT_SYSTEM_FOREGROUND, winevent_hook|wparam|lparam, OBJID_TITLEBAR, 2 },
    { EVENT_SYSTEM_MENUSTART, winevent_hook|wparam|lparam, OBJID_MENU, 3 },
    { EVENT_SYSTEM_MENUEND, winevent_hook|wparam|lparam, OBJID_CLIENT, 4 },
    { EVENT_SYSTEM_MENUPOPUPSTART, winevent_hook|wparam|lparam, OBJID_VSCROLL, 5 },
    { EVENT_SYSTEM_MENUPOPUPEND, winevent_hook|wparam|lparam, OBJID_HSCROLL, 6 },
    { EVENT_SYSTEM_CAPTURESTART, winevent_hook|wparam|lparam, OBJID_SIZEGRIP, 7 },
    { EVENT_SYSTEM_CAPTUREEND, winevent_hook|wparam|lparam, OBJID_CARET, 8 },
    /* our win event hook ignores OBJID_CURSOR events */
    /*{ EVENT_SYSTEM_MOVESIZESTART, winevent_hook|wparam|lparam, OBJID_CURSOR, 9 },*/
    { EVENT_SYSTEM_MOVESIZEEND, winevent_hook|wparam|lparam, OBJID_ALERT, 10 },
    { EVENT_SYSTEM_CONTEXTHELPSTART, winevent_hook|wparam|lparam, OBJID_SOUND, 11 },
    { EVENT_SYSTEM_CONTEXTHELPEND, winevent_hook|wparam|lparam, OBJID_QUERYCLASSNAMEIDX, 12 },
    { EVENT_SYSTEM_DRAGDROPSTART, winevent_hook|wparam|lparam, OBJID_NATIVEOM, 13 },
    { EVENT_SYSTEM_DRAGDROPEND, winevent_hook|wparam|lparam, OBJID_WINDOW, 0 },
    { EVENT_SYSTEM_DIALOGSTART, winevent_hook|wparam|lparam, OBJID_SYSMENU, 1 },
    { EVENT_SYSTEM_DIALOGEND, winevent_hook|wparam|lparam, OBJID_TITLEBAR, 2 },
    { EVENT_SYSTEM_SCROLLINGSTART, winevent_hook|wparam|lparam, OBJID_MENU, 3 },
    { EVENT_SYSTEM_SCROLLINGEND, winevent_hook|wparam|lparam, OBJID_CLIENT, 4 },
    { EVENT_SYSTEM_SWITCHSTART, winevent_hook|wparam|lparam, OBJID_VSCROLL, 5 },
    { EVENT_SYSTEM_SWITCHEND, winevent_hook|wparam|lparam, OBJID_HSCROLL, 6 },
    { EVENT_SYSTEM_MINIMIZESTART, winevent_hook|wparam|lparam, OBJID_SIZEGRIP, 7 },
    { EVENT_SYSTEM_MINIMIZEEND, winevent_hook|wparam|lparam, OBJID_CARET, 8 },
    { 0 }
};
static const struct message WmWinEventCaretSeq[] = {
    { EVENT_OBJECT_CREATE, winevent_hook|wparam|lparam, OBJID_CARET, 0 }, /* hook 1 */
    { EVENT_OBJECT_SHOW, winevent_hook|wparam|lparam, OBJID_CARET, 0 }, /* hook 1 */
    { EVENT_OBJECT_SHOW, winevent_hook|wparam|lparam, OBJID_CARET, 0 }, /* hook 2 */
    { EVENT_OBJECT_NAMECHANGE, winevent_hook|wparam|lparam, OBJID_CARET, 0 }, /* hook 1 */
    { 0 }
};
static const struct message WmWinEventCaretSeq_2[] = {
    { EVENT_OBJECT_CREATE, winevent_hook|wparam|lparam, OBJID_CARET, 0 }, /* hook 1/2 */
    { EVENT_OBJECT_SHOW, winevent_hook|wparam|lparam, OBJID_CARET, 0 }, /* hook 1/2 */
    { EVENT_OBJECT_NAMECHANGE, winevent_hook|wparam|lparam, OBJID_CARET, 0 }, /* hook 1/2 */
    { 0 }
};
static const struct message WmWinEventAlertSeq[] = {
    { EVENT_OBJECT_LOCATIONCHANGE, winevent_hook|wparam|lparam, OBJID_ALERT, 0 },
    { 0 }
};
static const struct message WmWinEventAlertSeq_2[] = {
    /* create window in the thread proc */
    { EVENT_OBJECT_CREATE, winevent_hook|wparam|lparam, OBJID_WINDOW, 2 },
    /* our test event */
    { EVENT_OBJECT_LOCATIONCHANGE, winevent_hook|wparam|lparam, OBJID_ALERT, 2 },
    { 0 }
};
static const struct message WmGlobalHookSeq_1[] = {
    /* create window in the thread proc */
    { HCBT_CREATEWND, hook|lparam, 0, 2 },
    /* our test events */
    { HCBT_SYSCOMMAND, hook|wparam|lparam, SC_PREVWINDOW, 2 },
    { HCBT_SYSCOMMAND, hook|wparam|lparam, SC_NEXTWINDOW, 2 },
    { 0 }
};
static const struct message WmGlobalHookSeq_2[] = {
    { HCBT_SYSCOMMAND, hook|wparam|lparam, SC_NEXTWINDOW, 0 }, /* old local hook */
    { HCBT_SYSCOMMAND, hook|wparam|lparam, SC_NEXTWINDOW, 2 }, /* new global hook */
    { HCBT_SYSCOMMAND, hook|wparam|lparam, SC_PREVWINDOW, 0 }, /* old local hook */
    { HCBT_SYSCOMMAND, hook|wparam|lparam, SC_PREVWINDOW, 2 }, /* new global hook */
    { 0 }
};

static void CALLBACK win_event_global_hook_proc(HWINEVENTHOOK hevent,
					 DWORD event,
					 HWND hwnd,
					 LONG object_id,
					 LONG child_id,
					 DWORD thread_id,
					 DWORD event_time)
{
    char buf[256];

    trace("WEH_2:%p,event %08lx,hwnd %p,obj %08lx,id %08lx,thread %08lx,time %08lx\n",
	   hevent, event, hwnd, object_id, child_id, thread_id, event_time);

    if (GetClassNameA(hwnd, buf, sizeof(buf)))
    {
	if (!lstrcmpiA(buf, "TestWindowClass") ||
	    !lstrcmpiA(buf, "static"))
	{
	    struct message msg;

	    msg.message = event;
	    msg.flags = winevent_hook|wparam|lparam;
	    msg.wParam = object_id;
	    msg.lParam = (thread_id == GetCurrentThreadId()) ? child_id : (child_id + 2);
	    add_message(&msg);
	}
    }
}

static HHOOK hCBT_global_hook;
static DWORD cbt_global_hook_thread_id;

static LRESULT CALLBACK cbt_global_hook_proc(int nCode, WPARAM wParam, LPARAM lParam) 
{ 
    HWND hwnd;
    char buf[256];

    trace("CBT_2: %d, %08x, %08lx\n", nCode, wParam, lParam);

    if (nCode == HCBT_SYSCOMMAND)
    {
	struct message msg;

	msg.message = nCode;
	msg.flags = hook|wparam|lparam;
	msg.wParam = wParam;
	msg.lParam = (cbt_global_hook_thread_id == GetCurrentThreadId()) ? 1 : 2;
	add_message(&msg);

	return CallNextHookEx(hCBT_global_hook, nCode, wParam, lParam);
    }

    /* Log also SetFocus(0) calls */
    hwnd = wParam ? (HWND)wParam : (HWND)lParam;

    if (GetClassNameA(hwnd, buf, sizeof(buf)))
    {
	if (!lstrcmpiA(buf, "TestWindowClass") ||
	    !lstrcmpiA(buf, "static"))
	{
	    struct message msg;

	    msg.message = nCode;
	    msg.flags = hook|wparam|lparam;
	    msg.wParam = wParam;
	    msg.lParam = (cbt_global_hook_thread_id == GetCurrentThreadId()) ? 1 : 2;
	    add_message(&msg);
	}
    }
    return CallNextHookEx(hCBT_global_hook, nCode, wParam, lParam);
}

static DWORD WINAPI win_event_global_thread_proc(void *param)
{
    HWND hwnd;
    MSG msg;
    HANDLE hevent = *(HANDLE *)param;
    HMODULE user32 = GetModuleHandleA("user32.dll");
    FARPROC pNotifyWinEvent = GetProcAddress(user32, "NotifyWinEvent");

    assert(pNotifyWinEvent);

    hwnd = CreateWindowExA(0, "static", NULL, WS_POPUP, 0,0,0,0,0,0,0, NULL);
    assert(hwnd);
    trace("created thread window %p\n", hwnd);

    *(HWND *)param = hwnd;

    flush_sequence();
    /* this event should be received only by our new hook proc,
     * an old one does not expect an event from another thread.
     */
    pNotifyWinEvent(EVENT_OBJECT_LOCATIONCHANGE, hwnd, OBJID_ALERT, 0);
    SetEvent(hevent);

    while (GetMessage(&msg, 0, 0, 0))
    {
	TranslateMessage(&msg);
	DispatchMessage(&msg);
    }
    return 0;
}

static DWORD WINAPI cbt_global_hook_thread_proc(void *param)
{
    HWND hwnd;
    MSG msg;
    HANDLE hevent = *(HANDLE *)param;

    flush_sequence();
    /* these events should be received only by our new hook proc,
     * an old one does not expect an event from another thread.
     */

    hwnd = CreateWindowExA(0, "static", NULL, WS_POPUP, 0,0,0,0,0,0,0, NULL);
    assert(hwnd);
    trace("created thread window %p\n", hwnd);

    *(HWND *)param = hwnd;

    /* Windows doesn't like when a thread plays games with the focus,
       that leads to all kinds of misbehaviours and failures to activate
       a window. So, better keep next lines commented out.
    SetFocus(0);
    SetFocus(hwnd);*/

    DefWindowProcA(hwnd, WM_SYSCOMMAND, SC_PREVWINDOW, 0);
    DefWindowProcA(hwnd, WM_SYSCOMMAND, SC_NEXTWINDOW, 0);

    SetEvent(hevent);

    while (GetMessage(&msg, 0, 0, 0))
    {
	TranslateMessage(&msg);
	DispatchMessage(&msg);
    }
    return 0;
}

static void test_winevents(void)
{
    BOOL ret;
    MSG msg;
    HWND hwnd, hwnd2;
    UINT i;
    HANDLE hthread, hevent;
    DWORD tid;
    HWINEVENTHOOK hhook;
    const struct message *events = WmWinEventsSeq;
    HMODULE user32 = GetModuleHandleA("user32.dll");
    FARPROC pSetWinEventHook = GetProcAddress(user32, "SetWinEventHook");
    FARPROC pUnhookWinEvent = GetProcAddress(user32, "UnhookWinEvent");
    FARPROC pNotifyWinEvent = GetProcAddress(user32, "NotifyWinEvent");

    hwnd = CreateWindowExA(0, "TestWindowClass", NULL,
			   WS_OVERLAPPEDWINDOW,
			   CW_USEDEFAULT, CW_USEDEFAULT, 300, 300, 0,
			   NULL, NULL, 0);
    assert(hwnd);

    /****** start of global hook test *************/
    hCBT_global_hook = SetWindowsHookExA(WH_CBT, cbt_global_hook_proc, GetModuleHandleA(0), 0);
    assert(hCBT_global_hook);

    hevent = CreateEventA(NULL, 0, 0, NULL);
    assert(hevent);
    hwnd2 = (HWND)hevent;

    hthread = CreateThread(NULL, 0, cbt_global_hook_thread_proc, &hwnd2, 0, &tid);
    ok(hthread != NULL, "CreateThread failed, error %ld\n", GetLastError());

    ok(WaitForSingleObject(hevent, INFINITE) == WAIT_OBJECT_0, "WaitForSingleObject failed\n");

    ok_sequence(WmGlobalHookSeq_1, "global hook 1", FALSE);

    flush_sequence();
    /* this one should be received only by old hook proc */
    DefWindowProcA(hwnd, WM_SYSCOMMAND, SC_NEXTWINDOW, 0);
    /* this one should be received only by old hook proc */
    DefWindowProcA(hwnd, WM_SYSCOMMAND, SC_PREVWINDOW, 0);

    ok_sequence(WmGlobalHookSeq_2, "global hook 2", FALSE);

    ret = UnhookWindowsHookEx(hCBT_global_hook);
    ok( ret, "UnhookWindowsHookEx error %ld\n", GetLastError());

    PostThreadMessageA(tid, WM_QUIT, 0, 0);
    ok(WaitForSingleObject(hthread, INFINITE) == WAIT_OBJECT_0, "WaitForSingleObject failed\n");
    CloseHandle(hthread);
    CloseHandle(hevent);
    ok(!IsWindow(hwnd2), "window should be destroyed on thread exit\n");
    /****** end of global hook test *************/

    if (!pSetWinEventHook || !pNotifyWinEvent || !pUnhookWinEvent)
    {
	ok(DestroyWindow(hwnd), "failed to destroy window\n");
	return;
    }

    flush_sequence();

#if 0 /* this test doesn't pass under Win9x */
    /* win2k ignores events with hwnd == 0 */
    SetLastError(0xdeadbeef);
    pNotifyWinEvent(events[0].message, 0, events[0].wParam, events[0].lParam);
    ok(GetLastError() == ERROR_INVALID_WINDOW_HANDLE || /* Win2k */
       GetLastError() == 0xdeadbeef, /* Win9x */
       "unexpected error %ld\n", GetLastError());
    ok_sequence(WmEmptySeq, "empty notify winevents", FALSE);
#endif

    for (i = 0; i < sizeof(WmWinEventsSeq)/sizeof(WmWinEventsSeq[0]); i++)
	pNotifyWinEvent(events[i].message, hwnd, events[i].wParam, events[i].lParam);

    ok_sequence(WmWinEventsSeq, "notify winevents", FALSE);

    /****** start of event filtering test *************/
    hhook = (HWINEVENTHOOK)pSetWinEventHook(
	EVENT_OBJECT_SHOW, /* 0x8002 */
	EVENT_OBJECT_LOCATIONCHANGE, /* 0x800B */
	GetModuleHandleA(0), win_event_global_hook_proc,
	GetCurrentProcessId(), 0,
	WINEVENT_INCONTEXT);
    ok(hhook != 0, "SetWinEventHook error %ld\n", GetLastError());

    hevent = CreateEventA(NULL, 0, 0, NULL);
    assert(hevent);
    hwnd2 = (HWND)hevent;

    hthread = CreateThread(NULL, 0, win_event_global_thread_proc, &hwnd2, 0, &tid);
    ok(hthread != NULL, "CreateThread failed, error %ld\n", GetLastError());

    ok(WaitForSingleObject(hevent, INFINITE) == WAIT_OBJECT_0, "WaitForSingleObject failed\n");

    ok_sequence(WmWinEventAlertSeq, "alert winevent", FALSE);

    flush_sequence();
    /* this one should be received only by old hook proc */
    pNotifyWinEvent(EVENT_OBJECT_CREATE, hwnd, OBJID_CARET, 0); /* 0x8000 */
    pNotifyWinEvent(EVENT_OBJECT_SHOW, hwnd, OBJID_CARET, 0); /* 0x8002 */
    /* this one should be received only by old hook proc */
    pNotifyWinEvent(EVENT_OBJECT_NAMECHANGE, hwnd, OBJID_CARET, 0); /* 0x800C */

    ok_sequence(WmWinEventCaretSeq, "caret winevent", FALSE);

    ret = pUnhookWinEvent(hhook);
    ok( ret, "UnhookWinEvent error %ld\n", GetLastError());

    PostThreadMessageA(tid, WM_QUIT, 0, 0);
    ok(WaitForSingleObject(hthread, INFINITE) == WAIT_OBJECT_0, "WaitForSingleObject failed\n");
    CloseHandle(hthread);
    CloseHandle(hevent);
    ok(!IsWindow(hwnd2), "window should be destroyed on thread exit\n");
    /****** end of event filtering test *************/

    /****** start of out of context event test *************/
    hhook = (HWINEVENTHOOK)pSetWinEventHook(
	EVENT_MIN, EVENT_MAX,
	0, win_event_global_hook_proc,
	GetCurrentProcessId(), 0,
	WINEVENT_OUTOFCONTEXT);
    ok(hhook != 0, "SetWinEventHook error %ld\n", GetLastError());

    hevent = CreateEventA(NULL, 0, 0, NULL);
    assert(hevent);
    hwnd2 = (HWND)hevent;

    flush_sequence();

    hthread = CreateThread(NULL, 0, win_event_global_thread_proc, &hwnd2, 0, &tid);
    ok(hthread != NULL, "CreateThread failed, error %ld\n", GetLastError());

    ok(WaitForSingleObject(hevent, INFINITE) == WAIT_OBJECT_0, "WaitForSingleObject failed\n");

    ok_sequence(WmEmptySeq, "empty notify winevents", FALSE);
    /* process pending winevent messages */
    ok(!PeekMessageA(&msg, 0, 0, 0, PM_NOREMOVE), "msg queue should be empty\n");
    ok_sequence(WmWinEventAlertSeq_2, "alert winevent for out of context proc", FALSE);

    flush_sequence();
    /* this one should be received only by old hook proc */
    pNotifyWinEvent(EVENT_OBJECT_CREATE, hwnd, OBJID_CARET, 0); /* 0x8000 */
    pNotifyWinEvent(EVENT_OBJECT_SHOW, hwnd, OBJID_CARET, 0); /* 0x8002 */
    /* this one should be received only by old hook proc */
    pNotifyWinEvent(EVENT_OBJECT_NAMECHANGE, hwnd, OBJID_CARET, 0); /* 0x800C */

    ok_sequence(WmWinEventCaretSeq_2, "caret winevent for incontext proc", FALSE);
    /* process pending winevent messages */
    ok(!PeekMessageA(&msg, 0, 0, 0, PM_NOREMOVE), "msg queue should be empty\n");
    ok_sequence(WmWinEventCaretSeq_2, "caret winevent for out of context proc", FALSE);

    ret = pUnhookWinEvent(hhook);
    ok( ret, "UnhookWinEvent error %ld\n", GetLastError());

    PostThreadMessageA(tid, WM_QUIT, 0, 0);
    ok(WaitForSingleObject(hthread, INFINITE) == WAIT_OBJECT_0, "WaitForSingleObject failed\n");
    CloseHandle(hthread);
    CloseHandle(hevent);
    ok(!IsWindow(hwnd2), "window should be destroyed on thread exit\n");
    /****** end of out of context event test *************/

    ok(DestroyWindow(hwnd), "failed to destroy window\n");
}

static void test_set_hook(void)
{
    BOOL ret;
    HHOOK hhook;
    HWINEVENTHOOK hwinevent_hook;
    HMODULE user32 = GetModuleHandleA("user32.dll");
    FARPROC pSetWinEventHook = GetProcAddress(user32, "SetWinEventHook");
    FARPROC pUnhookWinEvent = GetProcAddress(user32, "UnhookWinEvent");

    hhook = SetWindowsHookExA(WH_CBT, cbt_hook_proc, GetModuleHandleA(0), GetCurrentThreadId());
    ok(hhook != 0, "local hook does not require hModule set to 0\n");
    UnhookWindowsHookEx(hhook);

#if 0 /* this test doesn't pass under Win9x: BUG! */
    SetLastError(0xdeadbeef);
    hhook = SetWindowsHookExA(WH_CBT, cbt_hook_proc, 0, 0);
    ok(!hhook, "global hook requires hModule != 0\n");
    ok(GetLastError() == ERROR_HOOK_NEEDS_HMOD, "unexpected error %ld\n", GetLastError());
#endif

    SetLastError(0xdeadbeef);
    hhook = SetWindowsHookExA(WH_CBT, 0, GetModuleHandleA(0), GetCurrentThreadId());
    ok(!hhook, "SetWinEventHook with invalid proc should fail\n");
    ok(GetLastError() == ERROR_INVALID_FILTER_PROC || /* Win2k */
       GetLastError() == 0xdeadbeef, /* Win9x */
       "unexpected error %ld\n", GetLastError());

    SetLastError(0xdeadbeef);
    ok(!UnhookWindowsHookEx((HHOOK)0xdeadbeef), "UnhookWindowsHookEx succeeded\n");
    ok(GetLastError() == ERROR_INVALID_HOOK_HANDLE || /* Win2k */
       GetLastError() == 0xdeadbeef, /* Win9x */
       "unexpected error %ld\n", GetLastError());

    if (!pSetWinEventHook || !pUnhookWinEvent) return;

    /* even process local incontext hooks require hmodule */
    SetLastError(0xdeadbeef);
    hwinevent_hook = (HWINEVENTHOOK)pSetWinEventHook(EVENT_MIN, EVENT_MAX,
	0, win_event_proc, GetCurrentProcessId(), 0, WINEVENT_INCONTEXT);
    ok(!hwinevent_hook, "WINEVENT_INCONTEXT requires hModule != 0\n");
    ok(GetLastError() == ERROR_HOOK_NEEDS_HMOD || /* Win2k */
       GetLastError() == 0xdeadbeef, /* Win9x */
       "unexpected error %ld\n", GetLastError());

    /* even thread local incontext hooks require hmodule */
    SetLastError(0xdeadbeef);
    hwinevent_hook = (HWINEVENTHOOK)pSetWinEventHook(EVENT_MIN, EVENT_MAX,
	0, win_event_proc, GetCurrentProcessId(), GetCurrentThreadId(), WINEVENT_INCONTEXT);
    ok(!hwinevent_hook, "WINEVENT_INCONTEXT requires hModule != 0\n");
    ok(GetLastError() == ERROR_HOOK_NEEDS_HMOD || /* Win2k */
       GetLastError() == 0xdeadbeef, /* Win9x */
       "unexpected error %ld\n", GetLastError());

#if 0 /* these 3 tests don't pass under Win9x */
    SetLastError(0xdeadbeef);
    hwinevent_hook = (HWINEVENTHOOK)pSetWinEventHook(1, 0,
	0, win_event_proc, GetCurrentProcessId(), 0, WINEVENT_OUTOFCONTEXT);
    ok(!hwinevent_hook, "SetWinEventHook with invalid event range should fail\n");
    ok(GetLastError() == ERROR_INVALID_HOOK_FILTER, "unexpected error %ld\n", GetLastError());

    SetLastError(0xdeadbeef);
    hwinevent_hook = (HWINEVENTHOOK)pSetWinEventHook(-1, 1,
	0, win_event_proc, GetCurrentProcessId(), 0, WINEVENT_OUTOFCONTEXT);
    ok(!hwinevent_hook, "SetWinEventHook with invalid event range should fail\n");
    ok(GetLastError() == ERROR_INVALID_HOOK_FILTER, "unexpected error %ld\n", GetLastError());

    SetLastError(0xdeadbeef);
    hwinevent_hook = (HWINEVENTHOOK)pSetWinEventHook(EVENT_MIN, EVENT_MAX,
	0, win_event_proc, 0, 0xdeadbeef, WINEVENT_OUTOFCONTEXT);
    ok(!hwinevent_hook, "SetWinEventHook with invalid tid should fail\n");
    ok(GetLastError() == ERROR_INVALID_THREAD_ID, "unexpected error %ld\n", GetLastError());
#endif

    SetLastError(0xdeadbeef);
    hwinevent_hook = (HWINEVENTHOOK)pSetWinEventHook(0, 0,
	0, win_event_proc, GetCurrentProcessId(), 0, WINEVENT_OUTOFCONTEXT);
    ok(hwinevent_hook != 0, "SetWinEventHook error %ld\n", GetLastError());
    ok(GetLastError() == 0xdeadbeef, "unexpected error %ld\n", GetLastError());
    ret = pUnhookWinEvent(hwinevent_hook);
    ok( ret, "UnhookWinEvent error %ld\n", GetLastError());

todo_wine {
    /* This call succeeds under win2k SP4, but fails under Wine.
       Does win2k test/use passed process id? */
    SetLastError(0xdeadbeef);
    hwinevent_hook = (HWINEVENTHOOK)pSetWinEventHook(EVENT_MIN, EVENT_MAX,
	0, win_event_proc, 0xdeadbeef, 0, WINEVENT_OUTOFCONTEXT);
    ok(hwinevent_hook != 0, "SetWinEventHook error %ld\n", GetLastError());
    ok(GetLastError() == 0xdeadbeef, "unexpected error %ld\n", GetLastError());
    ret = pUnhookWinEvent(hwinevent_hook);
    ok( ret, "UnhookWinEvent error %ld\n", GetLastError());
}

    SetLastError(0xdeadbeef);
    ok(!pUnhookWinEvent((HWINEVENTHOOK)0xdeadbeef), "UnhookWinEvent succeeded\n");
    ok(GetLastError() == ERROR_INVALID_HANDLE || /* Win2k */
	GetLastError() == 0xdeadbeef, /* Win9x */
	"unexpected error %ld\n", GetLastError());
}

static const struct message ScrollWindowPaint1[] = {
    { WM_PAINT, sent },
    { WM_ERASEBKGND, sent|beginpaint },
    { 0 }
};

static const struct message ScrollWindowPaint2[] = {
    { WM_PAINT, sent },
    { 0 }
};

static void test_scrollwindowex(void)
{
    HWND hwnd, hchild;
    RECT rect={0,0,130,130};
    MSG msg;

    hwnd = CreateWindowExA(0, "TestWindowClass", "Test Scroll",
            WS_VISIBLE|WS_OVERLAPPEDWINDOW,
            100, 100, 200, 200, 0, 0, 0, NULL);
    ok (hwnd != 0, "Failed to create overlapped window\n");
    hchild = CreateWindowExA(0, "TestWindowClass", "Test child", 
            WS_VISIBLE|WS_CAPTION|WS_CHILD,
            10, 10, 150, 150, hwnd, 0, 0, NULL);
    ok (hchild != 0, "Failed to create child\n");
    UpdateWindow(hwnd);
    while (PeekMessage( &msg, 0, 0, 0, PM_REMOVE )) DispatchMessage( &msg );
    flush_sequence();

    /* scroll without the child window */
    trace("start scroll\n");
    ScrollWindowEx( hwnd, 10, 10, &rect, NULL, NULL, NULL,
            SW_ERASE|SW_INVALIDATE);
    ok_sequence(WmEmptySeq, "ScrollWindowEx", 0);
    trace("end scroll\n");
    flush_sequence();
    while (PeekMessage( &msg, 0, 0, 0, PM_REMOVE )) DispatchMessage( &msg );
    ok_sequence(ScrollWindowPaint1, "ScrollWindowEx", 0);

    /* Now without the SW_ERASE flag */
    trace("start scroll\n");
    ScrollWindowEx( hwnd, 10, 10, &rect, NULL, NULL, NULL, SW_INVALIDATE);
    ok_sequence(WmEmptySeq, "ScrollWindowEx", 0);
    trace("end scroll\n");
    flush_sequence();
    while (PeekMessage( &msg, 0, 0, 0, PM_REMOVE )) DispatchMessage( &msg );
    ok_sequence(ScrollWindowPaint2, "ScrollWindowEx", 0);

    /* now scroll the child window as well */
    trace("start scroll\n");
    ScrollWindowEx( hwnd, 10, 10, &rect, NULL, NULL, NULL,
            SW_SCROLLCHILDREN|SW_ERASE|SW_INVALIDATE);
    todo_wine { /* wine sends WM_POSCHANGING, WM_POSCHANGED messages */
                /* windows sometimes a WM_MOVE */
        ok_sequence(WmEmptySeq, "ScrollWindowEx", 0);
    }
    trace("end scroll\n");
    flush_sequence();
    while (PeekMessage( &msg, 0, 0, 0, PM_REMOVE )) DispatchMessage( &msg );
    ok_sequence(ScrollWindowPaint1, "ScrollWindowEx", 0);

    /* now scroll with ScrollWindow() */
    trace("start scroll with ScrollWindow\n");
    ScrollWindow( hwnd, 5, 5, NULL, NULL);
    trace("end scroll\n");
    flush_sequence();
    while (PeekMessage( &msg, 0, 0, 0, PM_REMOVE )) DispatchMessage( &msg );
    ok_sequence(ScrollWindowPaint1, "ScrollWindow", 0);

    ok(DestroyWindow(hchild), "failed to destroy window\n");
    ok(DestroyWindow(hwnd), "failed to destroy window\n");
    flush_sequence();
}

static const struct message destroy_window_with_children[] = {
    { EVENT_SYSTEM_CAPTURESTART, winevent_hook|wparam|lparam, 0, 0 }, /* popup */
    { HCBT_DESTROYWND, hook|lparam, 0, WND_PARENT_ID }, /* parent */
    { HCBT_DESTROYWND, hook|lparam, 0, WND_POPUP_ID }, /* popup */
    { EVENT_OBJECT_DESTROY, winevent_hook|wparam|lparam, 0, 0 }, /* popup */
    { WM_DESTROY, sent|wparam|lparam, 0, WND_POPUP_ID }, /* popup */
    { WM_CAPTURECHANGED, sent|wparam|lparam, 0, WND_POPUP_ID }, /* popup */
    { WM_NCDESTROY, sent|wparam|lparam, 0, WND_POPUP_ID }, /* popup */
    { EVENT_OBJECT_DESTROY, winevent_hook|wparam|lparam, 0, 0 }, /* parent */
    { WM_DESTROY, sent|wparam|lparam, 0, WND_PARENT_ID }, /* parent */
    { WM_DESTROY, sent|wparam|lparam, 0, WND_CHILD_ID + 2 }, /* child2 */
    { WM_DESTROY, sent|wparam|lparam, 0, WND_CHILD_ID + 1 }, /* child1 */
    { WM_DESTROY, sent|wparam|lparam, 0, WND_CHILD_ID + 3 }, /* child3 */
    { WM_NCDESTROY, sent|wparam|lparam, 0, WND_CHILD_ID + 2 }, /* child2 */
    { WM_NCDESTROY, sent|wparam|lparam, 0, WND_CHILD_ID + 3 }, /* child3 */
    { WM_NCDESTROY, sent|wparam|lparam, 0, WND_CHILD_ID + 1 }, /* child1 */
    { WM_NCDESTROY, sent|wparam|lparam, 0, WND_PARENT_ID }, /* parent */
    { 0 }
};

static void test_DestroyWindow(void)
{
    BOOL ret;
    HWND parent, child1, child2, child3, child4, test;
    UINT child_id = WND_CHILD_ID + 1;

    parent = CreateWindowExA(0, "TestWindowClass", NULL, WS_OVERLAPPEDWINDOW,
			     100, 100, 200, 200, 0, 0, 0, NULL);
    assert(parent != 0);
    child1 = CreateWindowExA(0, "TestWindowClass", NULL, WS_CHILD,
			     0, 0, 50, 50, parent, (HMENU)child_id++, 0, NULL);
    assert(child1 != 0);
    child2 = CreateWindowExA(0, "TestWindowClass", NULL, WS_CHILD,
			     0, 0, 50, 50, GetDesktopWindow(), (HMENU)child_id++, 0, NULL);
    assert(child2 != 0);
    child3 = CreateWindowExA(0, "TestWindowClass", NULL, WS_CHILD,
			     0, 0, 50, 50, child1, (HMENU)child_id++, 0, NULL);
    assert(child3 != 0);
    child4 = CreateWindowExA(0, "TestWindowClass", NULL, WS_POPUP,
			     0, 0, 50, 50, parent, 0, 0, NULL);
    assert(child4 != 0);

    /* test owner/parent of child2 */
    test = GetParent(child2);
    ok(test == GetDesktopWindow(), "wrong parent %p\n", test);
    ok(!IsChild(parent, child2), "wrong parent/child %p/%p\n", parent, child2);
    if(pGetAncestor) {
        test = pGetAncestor(child2, GA_PARENT);
        ok(test == GetDesktopWindow(), "wrong parent %p\n", test);
    }
    test = GetWindow(child2, GW_OWNER);
    ok(!test, "wrong owner %p\n", test);

    test = SetParent(child2, parent);
    ok(test == GetDesktopWindow(), "wrong old parent %p\n", test);

    /* test owner/parent of the parent */
    test = GetParent(parent);
    ok(!test, "wrong parent %p\n", test);
todo_wine {
    ok(!IsChild(GetDesktopWindow(), parent), "wrong parent/child %p/%p\n", GetDesktopWindow(), parent);
}
    if(pGetAncestor) {
        test = pGetAncestor(parent, GA_PARENT);
        ok(test == GetDesktopWindow(), "wrong parent %p\n", test);
    }
    test = GetWindow(parent, GW_OWNER);
    ok(!test, "wrong owner %p\n", test);

    /* test owner/parent of child1 */
    test = GetParent(child1);
    ok(test == parent, "wrong parent %p\n", test);
    ok(IsChild(parent, child1), "wrong parent/child %p/%p\n", parent, child1);
    if(pGetAncestor) {
        test = pGetAncestor(child1, GA_PARENT);
        ok(test == parent, "wrong parent %p\n", test);
    }
    test = GetWindow(child1, GW_OWNER);
    ok(!test, "wrong owner %p\n", test);

    /* test owner/parent of child2 */
    test = GetParent(child2);
    ok(test == parent, "wrong parent %p\n", test);
    ok(IsChild(parent, child2), "wrong parent/child %p/%p\n", parent, child2);
    if(pGetAncestor) {
        test = pGetAncestor(child2, GA_PARENT);
        ok(test == parent, "wrong parent %p\n", test);
    }
    test = GetWindow(child2, GW_OWNER);
    ok(!test, "wrong owner %p\n", test);

    /* test owner/parent of child3 */
    test = GetParent(child3);
    ok(test == child1, "wrong parent %p\n", test);
    ok(IsChild(parent, child3), "wrong parent/child %p/%p\n", parent, child3);
    if(pGetAncestor) {
        test = pGetAncestor(child3, GA_PARENT);
        ok(test == child1, "wrong parent %p\n", test);
    }
    test = GetWindow(child3, GW_OWNER);
    ok(!test, "wrong owner %p\n", test);

    /* test owner/parent of child4 */
    test = GetParent(child4);
    ok(test == parent, "wrong parent %p\n", test);
    ok(!IsChild(parent, child4), "wrong parent/child %p/%p\n", parent, child4);
    if(pGetAncestor) {
        test = pGetAncestor(child4, GA_PARENT);
        ok(test == GetDesktopWindow(), "wrong parent %p\n", test);
    }
    test = GetWindow(child4, GW_OWNER);
    ok(test == parent, "wrong owner %p\n", test);

    flush_sequence();

    trace("parent %p, child1 %p, child2 %p, child3 %p, child4 %p\n",
	   parent, child1, child2, child3, child4);

    SetCapture(child4);
    test = GetCapture();
    ok(test == child4, "wrong capture window %p\n", test);

    test_DestroyWindow_flag = TRUE;
    ret = DestroyWindow(parent);
    ok( ret, "DestroyWindow() error %ld\n", GetLastError());
    test_DestroyWindow_flag = FALSE;
    ok_sequence(destroy_window_with_children, "destroy window with children", 0);

    ok(!IsWindow(parent), "parent still exists\n");
    ok(!IsWindow(child1), "child1 still exists\n");
    ok(!IsWindow(child2), "child2 still exists\n");
    ok(!IsWindow(child3), "child3 still exists\n");
    ok(!IsWindow(child4), "child4 still exists\n");

    test = GetCapture();
    ok(!test, "wrong capture window %p\n", test);
}


static const struct message WmDispatchPaint[] = {
    { WM_NCPAINT, sent },
    { WM_GETTEXT, sent|defwinproc|optional },
    { WM_GETTEXT, sent|defwinproc|optional },
    { WM_ERASEBKGND, sent },
    { 0 }
};

static LRESULT WINAPI DispatchMessageCheckProc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
{
    if (message == WM_PAINT) return 0;
    return MsgCheckProcA( hwnd, message, wParam, lParam );
}

static void test_DispatchMessage(void)
{
    RECT rect;
    MSG msg;
    int count;
    HWND hwnd = CreateWindowA( "TestWindowClass", NULL, WS_OVERLAPPEDWINDOW,
                               100, 100, 200, 200, 0, 0, 0, NULL);
    ShowWindow( hwnd, SW_SHOW );
    UpdateWindow( hwnd );
    while (PeekMessage( &msg, 0, 0, 0, PM_REMOVE )) DispatchMessage( &msg );
    flush_sequence();
    SetWindowLongPtrA( hwnd, GWLP_WNDPROC, (LONG_PTR)DispatchMessageCheckProc );

    SetRect( &rect, -5, -5, 5, 5 );
    RedrawWindow( hwnd, &rect, 0, RDW_INVALIDATE|RDW_ERASE|RDW_FRAME );
    count = 0;
    while (PeekMessage( &msg, 0, 0, 0, PM_REMOVE ))
    {
        if (msg.message != WM_PAINT) DispatchMessage( &msg );
        else
        {
            flush_sequence();
            DispatchMessage( &msg );
            /* DispatchMessage will send WM_NCPAINT if non client area is still invalid after WM_PAINT */
            if (!count) ok_sequence( WmDispatchPaint, "WmDispatchPaint", FALSE );
            else ok_sequence( WmEmptySeq, "WmEmpty", FALSE );
            if (++count > 10) break;
        }
    }
    ok( msg.message == WM_PAINT && count > 10, "WM_PAINT messages stopped\n" );

    trace("now without DispatchMessage\n");
    flush_sequence();
    RedrawWindow( hwnd, &rect, 0, RDW_INVALIDATE|RDW_ERASE|RDW_FRAME );
    count = 0;
    while (PeekMessage( &msg, 0, 0, 0, PM_REMOVE ))
    {
        if (msg.message != WM_PAINT) DispatchMessage( &msg );
        else
        {
            HRGN hrgn = CreateRectRgn( 0, 0, 0, 0 );
            flush_sequence();
            /* this will send WM_NCCPAINT just like DispatchMessage does */
            GetUpdateRgn( hwnd, hrgn, TRUE );
            ok_sequence( WmDispatchPaint, "WmDispatchPaint", FALSE );
            DeleteObject( hrgn );
            GetClientRect( hwnd, &rect );
            ValidateRect( hwnd, &rect );  /* this will stop WM_PAINTs */
            ok( !count, "Got multiple WM_PAINTs\n" );
            if (++count > 10) break;
        }
    }
}


static const struct message WmUser[] = {
    { WM_USER, sent },
    { 0 }
};

struct thread_info
{
    HWND  hwnd;
    DWORD timeout;
    DWORD ret;
};

static DWORD CALLBACK send_msg_thread( LPVOID arg )
{
    struct thread_info *info = arg;
    info->ret = SendMessageTimeoutA( info->hwnd, WM_USER, 0, 0, 0, info->timeout, NULL );
    if (!info->ret) ok( GetLastError() == ERROR_TIMEOUT, "unexpected error %ld\n", GetLastError());
    return 0;
}

static void wait_for_thread( HANDLE thread )
{
    while (MsgWaitForMultipleObjects(1, &thread, FALSE, INFINITE, QS_SENDMESSAGE) != WAIT_OBJECT_0)
    {
        MSG msg;
        while (PeekMessageA( &msg, 0, 0, 0, PM_REMOVE )) DispatchMessage(&msg);
    }
}

static LRESULT WINAPI send_msg_delay_proc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
{
    if (message == WM_USER) Sleep(200);
    return MsgCheckProcA( hwnd, message, wParam, lParam );
}

static void test_SendMessageTimeout(void)
{
    MSG msg;
    HANDLE thread;
    struct thread_info info;
    DWORD tid;

    info.hwnd = CreateWindowA( "TestWindowClass", NULL, WS_OVERLAPPEDWINDOW,
                               100, 100, 200, 200, 0, 0, 0, NULL);
    while (PeekMessageA( &msg, 0, 0, 0, PM_REMOVE )) DispatchMessage( &msg );
    flush_sequence();

    info.timeout = 1000;
    info.ret = 0xdeadbeef;
    thread = CreateThread( NULL, 0, send_msg_thread, &info, 0, &tid );
    wait_for_thread( thread );
    CloseHandle( thread );
    ok( info.ret == 1, "SendMessageTimeout failed\n" );
    ok_sequence( WmUser, "WmUser", FALSE );

    info.timeout = 1;
    info.ret = 0xdeadbeef;
    thread = CreateThread( NULL, 0, send_msg_thread, &info, 0, &tid );
    Sleep(100);  /* SendMessageTimeout should timeout here */
    wait_for_thread( thread );
    CloseHandle( thread );
    ok( info.ret == 0, "SendMessageTimeout succeeded\n" );
    ok_sequence( WmEmptySeq, "WmEmptySeq", FALSE );

    /* 0 means infinite timeout */
    info.timeout = 0;
    info.ret = 0xdeadbeef;
    thread = CreateThread( NULL, 0, send_msg_thread, &info, 0, &tid );
    Sleep(100);
    wait_for_thread( thread );
    CloseHandle( thread );
    ok( info.ret == 1, "SendMessageTimeout failed\n" );
    ok_sequence( WmUser, "WmUser", FALSE );

    /* timeout is treated as signed despite the prototype */
    info.timeout = 0x7fffffff;
    info.ret = 0xdeadbeef;
    thread = CreateThread( NULL, 0, send_msg_thread, &info, 0, &tid );
    Sleep(100);
    wait_for_thread( thread );
    CloseHandle( thread );
    ok( info.ret == 1, "SendMessageTimeout failed\n" );
    ok_sequence( WmUser, "WmUser", FALSE );

    info.timeout = 0x80000000;
    info.ret = 0xdeadbeef;
    thread = CreateThread( NULL, 0, send_msg_thread, &info, 0, &tid );
    Sleep(100);
    wait_for_thread( thread );
    CloseHandle( thread );
    ok( info.ret == 0, "SendMessageTimeout succeeded\n" );
    ok_sequence( WmEmptySeq, "WmEmptySeq", FALSE );

    /* now check for timeout during message processing */
    SetWindowLongPtrA( info.hwnd, GWLP_WNDPROC, (LONG_PTR)send_msg_delay_proc );
    info.timeout = 100;
    info.ret = 0xdeadbeef;
    thread = CreateThread( NULL, 0, send_msg_thread, &info, 0, &tid );
    wait_for_thread( thread );
    CloseHandle( thread );
    /* we should timeout but still get the message */
    ok( info.ret == 0, "SendMessageTimeout failed\n" );
    ok_sequence( WmUser, "WmUser", FALSE );

    DestroyWindow( info.hwnd );
}


START_TEST(msg)
{
    BOOL ret;
    HMODULE user32 = GetModuleHandleA("user32.dll");
    FARPROC pSetWinEventHook = GetProcAddress(user32, "SetWinEventHook");
    FARPROC pUnhookWinEvent = GetProcAddress(user32, "UnhookWinEvent");
    FARPROC pIsWinEventHookInstalled = 0;/*GetProcAddress(user32, "IsWinEventHookInstalled");*/
    pGetAncestor = (void*) GetProcAddress(user32, "GetAncestor");

    if (!RegisterWindowClasses()) assert(0);

    if (pSetWinEventHook)
    {
	hEvent_hook = (HWINEVENTHOOK)pSetWinEventHook(EVENT_MIN, EVENT_MAX,
						      GetModuleHandleA(0),
						      win_event_proc,
						      0,
						      GetCurrentThreadId(),
						      WINEVENT_INCONTEXT);
	assert(hEvent_hook);

	if (pIsWinEventHookInstalled)
	{
	    UINT event;
	    for (event = EVENT_MIN; event <= EVENT_MAX; event++)
		ok(pIsWinEventHookInstalled(event), "IsWinEventHookInstalled(%u) failed\n", event);
	}
    }

    cbt_hook_thread_id = GetCurrentThreadId();
    hCBT_hook = SetWindowsHookExA(WH_CBT, cbt_hook_proc, 0, GetCurrentThreadId());
    assert(hCBT_hook);

    test_winevents();

    /* Fix message sequences before removing 3 lines below */
    ret = pUnhookWinEvent(hEvent_hook);
    ok( ret, "UnhookWinEvent error %ld\n", GetLastError());
    pUnhookWinEvent = 0;
    hEvent_hook = 0;

    test_scrollwindowex();
    test_messages();
    test_mdi_messages();
    test_button_messages();
    test_paint_messages();
    test_interthread_messages();
    test_message_conversion();
    test_accelerators();
    test_timers();
    test_set_hook();
    test_DestroyWindow();
    test_DispatchMessage();
    test_SendMessageTimeout();

    UnhookWindowsHookEx(hCBT_hook);
    if (pUnhookWinEvent)
    {
	ret = pUnhookWinEvent(hEvent_hook);
	ok( ret, "UnhookWinEvent error %ld\n", GetLastError());
	SetLastError(0xdeadbeef);
	ok(!pUnhookWinEvent(hEvent_hook), "UnhookWinEvent succeeded\n");
	ok(GetLastError() == ERROR_INVALID_HANDLE || /* Win2k */
	   GetLastError() == 0xdeadbeef, /* Win9x */
	   "unexpected error %ld\n", GetLastError());
    }
}