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a27807dca8
wine/windows/win.c
Slava Monich a27807dca8 o check for both CW_USEDEFAULT and CW_USEDEFAULT16. 
o if x is CW_USEDEFAULT (or CW_USEDEFAULT16) and y is *not*
  CW_USEDEFAULT (or CW_USEDEFAULT16) then use y as a second
  parameter to ShowWindow(). Some apps (CALC.EXE for Win98
  is one of them) use this undocumented feature to create
  hidden window with WS_VISIBLE style set.
1999-06-05 11:46:35 +00:00

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/*
* Window related functions
*
* Copyright 1993, 1994 Alexandre Julliard
*/
#include <stdlib.h>
#include <string.h>
#include "wine/winbase16.h"
#include "wine/winuser16.h"
#include "options.h"
#include "class.h"
#include "win.h"
#include "heap.h"
#include "user.h"
#include "dce.h"
#include "cursoricon.h"
#include "hook.h"
#include "menu.h"
#include "message.h"
#include "nonclient.h"
#include "queue.h"
#include "winpos.h"
#include "shm_main_blk.h"
#include "dde_proc.h"
#include "clipboard.h"
#include "winproc.h"
#include "task.h"
#include "thread.h"
#include "process.h"
#include "debugtools.h"
#include "winerror.h"
#include "mdi.h"
#include "local.h"
#include "desktop.h"
#include "syslevel.h"
DECLARE_DEBUG_CHANNEL(msg)
DECLARE_DEBUG_CHANNEL(win)
/**********************************************************************/
WND_DRIVER *WND_Driver = NULL;
/* Desktop window */
static WND *pWndDesktop = NULL;
static HWND hwndSysModal = 0;
static WORD wDragWidth = 4;
static WORD wDragHeight= 3;
/* thread safeness */
static SYSLEVEL WIN_SysLevel;
/***********************************************************************
* WIN_Init
*/
void WIN_Init( void )
{
/* Initialisation of the critical section for thread safeness */
_CreateSysLevel( &WIN_SysLevel, 2 );
}
/***********************************************************************
* WIN_LockWnds
*
* Locks access to all WND structures for thread safeness
*/
void WIN_LockWnds( void )
{
_EnterSysLevel( &WIN_SysLevel );
}
/***********************************************************************
* WIN_UnlockWnds
*
* Unlocks access to all WND structures
*/
void WIN_UnlockWnds( void )
{
_LeaveSysLevel( &WIN_SysLevel );
}
/***********************************************************************
* WIN_SuspendWndsLock
*
* Suspend the lock on WND structures.
* Returns the number of locks suspended
*/
int WIN_SuspendWndsLock( void )
{
int isuspendedLocks = _ConfirmSysLevel( &WIN_SysLevel );
int count = isuspendedLocks;
while ( count-- > 0 )
_LeaveSysLevel( &WIN_SysLevel );
return isuspendedLocks;
}
/***********************************************************************
* WIN_RestoreWndsLock
*
* Restore the suspended locks on WND structures
*/
void WIN_RestoreWndsLock( int ipreviousLocks )
{
while ( ipreviousLocks-- > 0 )
_EnterSysLevel( &WIN_SysLevel );
}
/***********************************************************************
* WIN_FindWndPtr
*
* Return a pointer to the WND structure corresponding to a HWND.
*/
WND * WIN_FindWndPtr( HWND hwnd )
{
WND * ptr;
if (!hwnd || HIWORD(hwnd)) goto error2;
ptr = (WND *) USER_HEAP_LIN_ADDR( hwnd );
/* Lock all WND structures for thread safeness*/
WIN_LockWnds();
/*and increment destruction monitoring*/
ptr->irefCount++;
if (ptr->dwMagic != WND_MAGIC) goto error;
if (ptr->hwndSelf != hwnd)
{
ERR_(win)("Can't happen: hwnd %04x self pointer is %04x\n",hwnd, ptr->hwndSelf );
goto error;
}
/* returns a locked pointer */
return ptr;
error:
/* Unlock all WND structures for thread safeness*/
WIN_UnlockWnds();
/* and decrement destruction monitoring value */
ptr->irefCount--;
error2:
if ( hwnd!=0 )
SetLastError( ERROR_INVALID_WINDOW_HANDLE );
return NULL;
}
/***********************************************************************
* WIN_LockWndPtr
*
* Use in case the wnd ptr is not initialized with WIN_FindWndPtr
* but by initWndPtr;
* Returns the locked initialisation pointer
*/
WND *WIN_LockWndPtr(WND *initWndPtr)
{
if(!initWndPtr) return 0;
/* Lock all WND structures for thread safeness*/
WIN_LockWnds();
/*and increment destruction monitoring*/
initWndPtr->irefCount++;
return initWndPtr;
}
/***********************************************************************
* WIN_ReleaseWndPtr
*
* Release the pointer to the WND structure.
*/
void WIN_ReleaseWndPtr(WND *wndPtr)
{
if(!wndPtr) return;
/*Decrement destruction monitoring value*/
wndPtr->irefCount--;
/* Check if it's time to release the memory*/
if(wndPtr->irefCount == 0 && !wndPtr->dwMagic)
{
/* Release memory */
USER_HEAP_FREE( wndPtr->hwndSelf);
wndPtr->hwndSelf = 0;
}
else if(wndPtr->irefCount < 0)
{
/* This else if is useful to monitor the WIN_ReleaseWndPtr function */
ERR_(win)("forgot a Lock on %p somewhere\n",wndPtr);
}
/*unlock all WND structures for thread safeness*/
WIN_UnlockWnds();
}
/***********************************************************************
* WIN_UpdateWndPtr
*
* Updates the value of oldPtr to newPtr.
*/
void WIN_UpdateWndPtr(WND **oldPtr, WND *newPtr)
{
WND *tmpWnd = NULL;
tmpWnd = WIN_LockWndPtr(newPtr);
WIN_ReleaseWndPtr(*oldPtr);
*oldPtr = tmpWnd;
}
/***********************************************************************
* WIN_DumpWindow
*
* Dump the content of a window structure to stderr.
*/
void WIN_DumpWindow( HWND hwnd )
{
WND *ptr;
char className[80];
int i;
if (!(ptr = WIN_FindWndPtr( hwnd )))
{
WARN_(win)("%04x is not a window handle\n", hwnd );
return;
}
if (!GetClassNameA( hwnd, className, sizeof(className ) ))
strcpy( className, "#NULL#" );
TRACE_(win)("Window %04x (%p):\n", hwnd, ptr );
DPRINTF( "next=%p child=%p parent=%p owner=%p class=%p '%s'\n"
"inst=%04x taskQ=%04x updRgn=%04x active=%04x dce=%p idmenu=%08x\n"
"style=%08lx exstyle=%08lx wndproc=%08x text='%s'\n"
"client=%d,%d-%d,%d window=%d,%d-%d,%d"
"sysmenu=%04x flags=%04x props=%p vscroll=%p hscroll=%p\n",
ptr->next, ptr->child, ptr->parent, ptr->owner,
ptr->class, className, ptr->hInstance, ptr->hmemTaskQ,
ptr->hrgnUpdate, ptr->hwndLastActive, ptr->dce, ptr->wIDmenu,
ptr->dwStyle, ptr->dwExStyle, (UINT)ptr->winproc,
ptr->text ? ptr->text : "",
ptr->rectClient.left, ptr->rectClient.top, ptr->rectClient.right,
ptr->rectClient.bottom, ptr->rectWindow.left, ptr->rectWindow.top,
ptr->rectWindow.right, ptr->rectWindow.bottom, ptr->hSysMenu,
ptr->flags, ptr->pProp, ptr->pVScroll, ptr->pHScroll );
if (ptr->class->cbWndExtra)
{
DPRINTF( "extra bytes:" );
for (i = 0; i < ptr->class->cbWndExtra; i++)
DPRINTF( " %02x", *((BYTE*)ptr->wExtra+i) );
DPRINTF( "\n" );
}
DPRINTF( "\n" );
WIN_ReleaseWndPtr(ptr);
}
/***********************************************************************
* WIN_WalkWindows
*
* Walk the windows tree and print each window on stderr.
*/
void WIN_WalkWindows( HWND hwnd, int indent )
{
WND *ptr;
char className[80];
ptr = hwnd ? WIN_FindWndPtr( hwnd ) : WIN_GetDesktop();
if (!ptr)
{
WARN_(win)("Invalid window handle %04x\n", hwnd );
return;
}
if (!indent) /* first time around */
DPRINTF( "%-16.16s %-8.8s %-6.6s %-17.17s %-8.8s %s\n",
"hwnd", " wndPtr", "queue", "Class Name", " Style", " WndProc"
" Text");
while (ptr)
{
DPRINTF( "%*s%04x%*s", indent, "", ptr->hwndSelf, 13-indent,"");
GlobalGetAtomName16(ptr->class->atomName,className,sizeof(className));
DPRINTF( "%08lx %-6.4x %-17.17s %08x %08x %.14s\n",
(DWORD)ptr, ptr->hmemTaskQ, className,
(UINT)ptr->dwStyle, (UINT)ptr->winproc,
ptr->text?ptr->text:"<null>");
if (ptr->child) WIN_WalkWindows( ptr->child->hwndSelf, indent+1 );
WIN_UpdateWndPtr(&ptr,ptr->next);
}
}
/***********************************************************************
* WIN_UnlinkWindow
*
* Remove a window from the siblings linked list.
*/
BOOL WIN_UnlinkWindow( HWND hwnd )
{
WND *wndPtr, **ppWnd;
BOOL ret = FALSE;
if (!(wndPtr = WIN_FindWndPtr( hwnd ))) return FALSE;
else if(!wndPtr->parent)
{
WIN_ReleaseWndPtr(wndPtr);
return FALSE;
}
ppWnd = &wndPtr->parent->child;
while (*ppWnd && *ppWnd != wndPtr) ppWnd = &(*ppWnd)->next;
if (*ppWnd)
{
*ppWnd = wndPtr->next;
ret = TRUE;
}
WIN_ReleaseWndPtr(wndPtr);
return ret;
}
/***********************************************************************
* WIN_LinkWindow
*
* Insert a window into the siblings linked list.
* The window is inserted after the specified window, which can also
* be specified as HWND_TOP or HWND_BOTTOM.
*/
BOOL WIN_LinkWindow( HWND hwnd, HWND hwndInsertAfter )
{
WND *wndPtr, **ppWnd;
if (!(wndPtr = WIN_FindWndPtr( hwnd ))) return FALSE;
else if(!wndPtr->parent)
{
WIN_ReleaseWndPtr(wndPtr);
return FALSE;
}
if ((hwndInsertAfter == HWND_TOP) || (hwndInsertAfter == HWND_BOTTOM))
{
ppWnd = &wndPtr->parent->child; /* Point to first sibling hwnd */
if (hwndInsertAfter == HWND_BOTTOM) /* Find last sibling hwnd */
while (*ppWnd) ppWnd = &(*ppWnd)->next;
}
else /* Normal case */
{
WND * afterPtr = WIN_FindWndPtr( hwndInsertAfter );
if (!afterPtr)
{
WIN_ReleaseWndPtr(wndPtr);
return FALSE;
}
ppWnd = &afterPtr->next;
WIN_ReleaseWndPtr(afterPtr);
}
wndPtr->next = *ppWnd;
*ppWnd = wndPtr;
WIN_ReleaseWndPtr(wndPtr);
return TRUE;
}
/***********************************************************************
* WIN_FindWinToRepaint
*
* Find a window that needs repaint.
*/
HWND WIN_FindWinToRepaint( HWND hwnd, HQUEUE16 hQueue )
{
HWND hwndRet;
WND *pWnd;
/* Note: the desktop window never gets WM_PAINT messages
* The real reason why is because Windows DesktopWndProc
* does ValidateRgn inside WM_ERASEBKGND handler.
*/
pWnd = hwnd ? WIN_FindWndPtr(hwnd) : WIN_LockWndPtr(pWndDesktop->child);
for ( ; pWnd ; WIN_UpdateWndPtr(&pWnd,pWnd->next))
{
if (!(pWnd->dwStyle & WS_VISIBLE))
{
TRACE_(win)("skipping window %04x\n",
pWnd->hwndSelf );
}
else if ((pWnd->hmemTaskQ == hQueue) &&
(pWnd->hrgnUpdate || (pWnd->flags & WIN_INTERNAL_PAINT)))
break;
else if (pWnd->child )
if ((hwndRet = WIN_FindWinToRepaint( pWnd->child->hwndSelf, hQueue )) )
{
WIN_ReleaseWndPtr(pWnd);
return hwndRet;
}
}
if(!pWnd)
{
return 0;
}
hwndRet = pWnd->hwndSelf;
/* look among siblings if we got a transparent window */
while (pWnd && ((pWnd->dwExStyle & WS_EX_TRANSPARENT) ||
!(pWnd->hrgnUpdate || (pWnd->flags & WIN_INTERNAL_PAINT))))
{
WIN_UpdateWndPtr(&pWnd,pWnd->next);
}
if (pWnd)
{
hwndRet = pWnd->hwndSelf;
WIN_ReleaseWndPtr(pWnd);
}
TRACE_(win)("found %04x\n",hwndRet);
return hwndRet;
}
/***********************************************************************
* WIN_DestroyWindow
*
* Destroy storage associated to a window. "Internals" p.358
* returns a locked wndPtr->next
*/
static WND* WIN_DestroyWindow( WND* wndPtr )
{
HWND hwnd = wndPtr->hwndSelf;
WND *pWnd;
TRACE_(win)("%04x\n", wndPtr->hwndSelf );
#ifdef CONFIG_IPC
if (main_block)
DDE_DestroyWindow(wndPtr->hwndSelf);
#endif /* CONFIG_IPC */
/* free child windows */
WIN_LockWndPtr(wndPtr->child);
while ((pWnd = wndPtr->child))
{
wndPtr->child = WIN_DestroyWindow( pWnd );
WIN_ReleaseWndPtr(pWnd);
}
/*
* Clear the update region to make sure no WM_PAINT messages will be
* generated for this window while processing the WM_NCDESTROY.
*/
if ((wndPtr->hrgnUpdate) || (wndPtr->flags & WIN_INTERNAL_PAINT))
{
if (wndPtr->hrgnUpdate > 1)
DeleteObject( wndPtr->hrgnUpdate );
QUEUE_DecPaintCount( wndPtr->hmemTaskQ );
wndPtr->hrgnUpdate = 0;
}
/*
* Send the WM_NCDESTROY to the window being destroyed.
*/
SendMessageA( wndPtr->hwndSelf, WM_NCDESTROY, 0, 0);
/* FIXME: do we need to fake QS_MOUSEMOVE wakebit? */
WINPOS_CheckInternalPos( wndPtr );
if( hwnd == GetCapture()) ReleaseCapture();
/* free resources associated with the window */
TIMER_RemoveWindowTimers( wndPtr->hwndSelf );
PROPERTY_RemoveWindowProps( wndPtr );
wndPtr->dwMagic = 0; /* Mark it as invalid */
/* toss stale messages from the queue */
if( wndPtr->hmemTaskQ )
{
BOOL bPostQuit = FALSE;
WPARAM wQuitParam = 0;
MESSAGEQUEUE* msgQ = (MESSAGEQUEUE*) QUEUE_Lock(wndPtr->hmemTaskQ);
QMSG *qmsg;
while( (qmsg = QUEUE_FindMsg(msgQ, hwnd, 0, 0)) != 0 )
{
if( qmsg->msg.message == WM_QUIT )
{
bPostQuit = TRUE;
wQuitParam = qmsg->msg.wParam;
}
QUEUE_RemoveMsg(msgQ, qmsg);
}
QUEUE_Unlock(msgQ);
/* repost WM_QUIT to make sure this app exits its message loop */
if( bPostQuit ) PostQuitMessage(wQuitParam);
wndPtr->hmemTaskQ = 0;
}
if (!(wndPtr->dwStyle & WS_CHILD))
if (wndPtr->wIDmenu) DestroyMenu( (HMENU)wndPtr->wIDmenu );
if (wndPtr->hSysMenu) DestroyMenu( wndPtr->hSysMenu );
wndPtr->pDriver->pDestroyWindow( wndPtr );
DCE_FreeWindowDCE( wndPtr ); /* Always do this to catch orphaned DCs */
WINPROC_FreeProc( wndPtr->winproc, WIN_PROC_WINDOW );
wndPtr->class->cWindows--;
wndPtr->class = NULL;
WIN_UpdateWndPtr(&pWnd,wndPtr->next);
wndPtr->pDriver->pFinalize(wndPtr);
return pWnd;
}
/***********************************************************************
* WIN_ResetQueueWindows
*
* Reset the queue of all the children of a given window.
* Return TRUE if something was done.
*/
BOOL WIN_ResetQueueWindows( WND* wnd, HQUEUE16 hQueue, HQUEUE16 hNew )
{
BOOL ret = FALSE;
if (hNew) /* Set a new queue */
{
for (wnd = WIN_LockWndPtr(wnd->child); (wnd);WIN_UpdateWndPtr(&wnd,wnd->next))
{
if (wnd->hmemTaskQ == hQueue)
{
wnd->hmemTaskQ = hNew;
ret = TRUE;
}
if (wnd->child)
{
ret |= WIN_ResetQueueWindows( wnd, hQueue, hNew );
}
}
}
else /* Queue is being destroyed */
{
while (wnd->child)
{
WND *tmp = WIN_LockWndPtr(wnd->child);
WND *tmp2;
ret = FALSE;
while (tmp)
{
if (tmp->hmemTaskQ == hQueue)
{
DestroyWindow( tmp->hwndSelf );
ret = TRUE;
break;
}
tmp2 = WIN_LockWndPtr(tmp->child);
if (tmp2 && WIN_ResetQueueWindows(tmp2,hQueue,0))
ret = TRUE;
else
{
WIN_UpdateWndPtr(&tmp,tmp->next);
}
WIN_ReleaseWndPtr(tmp2);
}
WIN_ReleaseWndPtr(tmp);
if (!ret) break;
}
}
return ret;
}
/***********************************************************************
* WIN_CreateDesktopWindow
*
* Create the desktop window.
*/
BOOL WIN_CreateDesktopWindow(void)
{
CLASS *class;
HWND hwndDesktop;
DESKTOP *pDesktop;
TRACE_(win)("Creating desktop window\n");
if (!ICONTITLE_Init() ||
!WINPOS_CreateInternalPosAtom() ||
!(class = CLASS_FindClassByAtom( DESKTOP_CLASS_ATOM, 0 )))
return FALSE;
hwndDesktop = USER_HEAP_ALLOC( sizeof(WND)+class->cbWndExtra );
if (!hwndDesktop) return FALSE;
pWndDesktop = (WND *) USER_HEAP_LIN_ADDR( hwndDesktop );
pDesktop = (DESKTOP *) pWndDesktop->wExtra;
pDesktop->pDriver = DESKTOP_Driver;
pWndDesktop->pDriver = WND_Driver;
pDesktop->pDriver->pInitialize(pDesktop);
pWndDesktop->pDriver->pInitialize(pWndDesktop);
pWndDesktop->next = NULL;
pWndDesktop->child = NULL;
pWndDesktop->parent = NULL;
pWndDesktop->owner = NULL;
pWndDesktop->class = class;
pWndDesktop->dwMagic = WND_MAGIC;
pWndDesktop->hwndSelf = hwndDesktop;
pWndDesktop->hInstance = 0;
pWndDesktop->rectWindow.left = 0;
pWndDesktop->rectWindow.top = 0;
pWndDesktop->rectWindow.right = GetSystemMetrics(SM_CXSCREEN);
pWndDesktop->rectWindow.bottom = GetSystemMetrics(SM_CYSCREEN);
pWndDesktop->rectClient = pWndDesktop->rectWindow;
pWndDesktop->text = NULL;
pWndDesktop->hmemTaskQ = GetFastQueue16();
pWndDesktop->hrgnUpdate = 0;
pWndDesktop->hwndLastActive = hwndDesktop;
pWndDesktop->dwStyle = WS_VISIBLE | WS_CLIPCHILDREN |
WS_CLIPSIBLINGS;
pWndDesktop->dwExStyle = 0;
pWndDesktop->dce = NULL;
pWndDesktop->pVScroll = NULL;
pWndDesktop->pHScroll = NULL;
pWndDesktop->pProp = NULL;
pWndDesktop->wIDmenu = 0;
pWndDesktop->helpContext = 0;
pWndDesktop->flags = Options.desktopGeometry ? WIN_NATIVE : 0;
pWndDesktop->hSysMenu = 0;
pWndDesktop->userdata = 0;
pWndDesktop->winproc = (WNDPROC16)class->winproc;
pWndDesktop->irefCount = 0;
/* FIXME: How do we know if it should be Unicode or not */
if(!pWndDesktop->pDriver->pCreateDesktopWindow(pWndDesktop, class, FALSE))
return FALSE;
SendMessageA( hwndDesktop, WM_NCCREATE, 0, 0 );
pWndDesktop->flags |= WIN_NEEDS_ERASEBKGND;
return TRUE;
}
/***********************************************************************
* WIN_CreateWindowEx
*
* Implementation of CreateWindowEx().
*/
static HWND WIN_CreateWindowEx( CREATESTRUCTA *cs, ATOM classAtom,
BOOL win32, BOOL unicode )
{
INT sw = SW_SHOW;
CLASS *classPtr;
WND *wndPtr;
HWND retvalue;
HWND16 hwnd, hwndLinkAfter;
POINT maxSize, maxPos, minTrack, maxTrack;
LRESULT (CALLBACK *localSend32)(HWND, UINT, WPARAM, LPARAM);
char buffer[256];
TRACE_(win)("%s %s %08lx %08lx %d,%d %dx%d %04x %04x %08x %p\n",
unicode ? debugres_w((LPWSTR)cs->lpszName) : debugres_a(cs->lpszName),
unicode ? debugres_w((LPWSTR)cs->lpszClass) : debugres_a(cs->lpszClass),
cs->dwExStyle, cs->style, cs->x, cs->y, cs->cx, cs->cy,
cs->hwndParent, cs->hMenu, cs->hInstance, cs->lpCreateParams );
/* Find the parent window */
if (cs->hwndParent)
{
/* Make sure parent is valid */
if (!IsWindow( cs->hwndParent ))
{
WARN_(win)("Bad parent %04x\n", cs->hwndParent );
return 0;
}
} else if ((cs->style & WS_CHILD) && !(cs->style & WS_POPUP)) {
WARN_(win)("No parent for child window\n" );
return 0; /* WS_CHILD needs a parent, but WS_POPUP doesn't */
}
/* Find the window class */
if (!(classPtr = CLASS_FindClassByAtom( classAtom, win32?cs->hInstance:GetExePtr(cs->hInstance) )))
{
GlobalGetAtomNameA( classAtom, buffer, sizeof(buffer) );
WARN_(win)("Bad class '%s'\n", buffer );
return 0;
}
/* Fix the lpszClass field: from existing programs, it seems ok to call a CreateWindowXXX
* with an atom as the class name, put some programs expect to have a *REAL* string in
* lpszClass when the CREATESTRUCT is sent with WM_CREATE
*/
if ( !HIWORD(cs->lpszClass) ) {
if (unicode) {
GlobalGetAtomNameW( classAtom, (LPWSTR)buffer, sizeof(buffer) );
} else {
GlobalGetAtomNameA( classAtom, buffer, sizeof(buffer) );
}
cs->lpszClass = buffer;
}
/* Fix the coordinates */
if (cs->x == CW_USEDEFAULT || cs->x == CW_USEDEFAULT16)
{
PDB *pdb = PROCESS_Current();
/* Never believe Microsoft's documentation... CreateWindowEx doc says
* that if an overlapped window is created with WS_VISIBLE style bit
* set and the x parameter is set to CW_USEDEFAULT, the system ignores
* the y parameter. However, disassembling NT implementation (WIN32K.SYS)
* reveals that
*
* 1) not only if checks for CW_USEDEFAULT but also for CW_USEDEFAULT16
* 2) it does not ignore the y parameter as the docs claim; instead, it
* uses it as second parameter to ShowWindow() unless y is either
* CW_USEDEFAULT or CW_USEDEFAULT16.
*
* The fact that we didn't do 2) caused bogus windows pop up when wine
* was running apps that were using this obscure feature. Example -
* calc.exe that comes with Win98 (only Win98, it's different from
* the one that comes with Win95 and NT)
*/
if (cs->y != CW_USEDEFAULT && cs->y != CW_USEDEFAULT16) sw = cs->y;
/* We have saved cs->y, now we can trash it */
if ( !(cs->style & (WS_CHILD | WS_POPUP))
&& (pdb->env_db->startup_info->dwFlags & STARTF_USEPOSITION) )
{
cs->x = pdb->env_db->startup_info->dwX;
cs->y = pdb->env_db->startup_info->dwY;
}
else
{
cs->x = 0;
cs->y = 0;
}
}
if (cs->cx == CW_USEDEFAULT || cs->cx == CW_USEDEFAULT16)
{
PDB *pdb = PROCESS_Current();
if ( !(cs->style & (WS_CHILD | WS_POPUP))
&& (pdb->env_db->startup_info->dwFlags & STARTF_USESIZE) )
{
cs->cx = pdb->env_db->startup_info->dwXSize;
cs->cy = pdb->env_db->startup_info->dwYSize;
}
else
{
cs->cx = 600; /* FIXME */
cs->cy = 400;
}
}
/* Create the window structure */
if (!(hwnd = USER_HEAP_ALLOC( sizeof(*wndPtr) + classPtr->cbWndExtra
- sizeof(wndPtr->wExtra) )))
{
TRACE_(win)("out of memory\n" );
return 0;
}
/* Fill the window structure */
wndPtr = WIN_LockWndPtr((WND *) USER_HEAP_LIN_ADDR( hwnd ));
wndPtr->next = NULL;
wndPtr->child = NULL;
if ((cs->style & WS_CHILD) && cs->hwndParent)
{
wndPtr->parent = WIN_FindWndPtr( cs->hwndParent );
wndPtr->owner = NULL;
WIN_ReleaseWndPtr(wndPtr->parent);
}
else
{
wndPtr->parent = pWndDesktop;
if (!cs->hwndParent || (cs->hwndParent == pWndDesktop->hwndSelf))
wndPtr->owner = NULL;
else
{
WND *tmpWnd = WIN_FindWndPtr(cs->hwndParent);
wndPtr->owner = WIN_GetTopParentPtr(tmpWnd);
WIN_ReleaseWndPtr(wndPtr->owner);
WIN_ReleaseWndPtr(tmpWnd);
}
}
wndPtr->pDriver = wndPtr->parent->pDriver;
wndPtr->pDriver->pInitialize(wndPtr);
wndPtr->class = classPtr;
wndPtr->winproc = classPtr->winproc;
wndPtr->dwMagic = WND_MAGIC;
wndPtr->hwndSelf = hwnd;
wndPtr->hInstance = cs->hInstance;
wndPtr->text = NULL;
wndPtr->hmemTaskQ = GetFastQueue16();
wndPtr->hrgnUpdate = 0;
wndPtr->hwndLastActive = hwnd;
wndPtr->dwStyle = cs->style & ~WS_VISIBLE;
wndPtr->dwExStyle = cs->dwExStyle;
wndPtr->wIDmenu = 0;
wndPtr->helpContext = 0;
wndPtr->flags = win32 ? WIN_ISWIN32 : 0;
wndPtr->pVScroll = NULL;
wndPtr->pHScroll = NULL;
wndPtr->pProp = NULL;
wndPtr->userdata = 0;
wndPtr->hSysMenu = (wndPtr->dwStyle & WS_SYSMENU)
? MENU_GetSysMenu( hwnd, 0 ) : 0;
wndPtr->irefCount = 1;
if (classPtr->cbWndExtra) memset( wndPtr->wExtra, 0, classPtr->cbWndExtra);
/* Call the WH_CBT hook */
hwndLinkAfter = ((cs->style & (WS_CHILD|WS_MAXIMIZE)) == WS_CHILD)
? HWND_BOTTOM : HWND_TOP;
if (HOOK_IsHooked( WH_CBT ))
{
CBT_CREATEWNDA cbtc;
LRESULT ret;
cbtc.lpcs = cs;
cbtc.hwndInsertAfter = hwndLinkAfter;
ret = unicode ? HOOK_CallHooksW(WH_CBT, HCBT_CREATEWND, hwnd, (LPARAM)&cbtc)
: HOOK_CallHooksA(WH_CBT, HCBT_CREATEWND, hwnd, (LPARAM)&cbtc);
if (ret)
{
TRACE_(win)("CBT-hook returned 0\n");
wndPtr->pDriver->pFinalize(wndPtr);
USER_HEAP_FREE( hwnd );
retvalue = 0;
goto end;
}
}
/* Increment class window counter */
classPtr->cWindows++;
/* Correct the window style */
if (!(cs->style & WS_CHILD))
{
wndPtr->dwStyle |= WS_CLIPSIBLINGS;
if (!(cs->style & WS_POPUP))
{
wndPtr->dwStyle |= WS_CAPTION;
wndPtr->flags |= WIN_NEED_SIZE;
}
}
if (cs->dwExStyle & WS_EX_DLGMODALFRAME) wndPtr->dwStyle &= ~WS_THICKFRAME;
/* Get class or window DC if needed */
if (classPtr->style & CS_OWNDC) wndPtr->dce = DCE_AllocDCE(hwnd,DCE_WINDOW_DC);
else if (classPtr->style & CS_CLASSDC) wndPtr->dce = classPtr->dce;
else wndPtr->dce = NULL;
/* Send the WM_GETMINMAXINFO message and fix the size if needed */
if ((cs->style & WS_THICKFRAME) || !(cs->style & (WS_POPUP | WS_CHILD)))
{
WINPOS_GetMinMaxInfo( wndPtr, &maxSize, &maxPos, &minTrack, &maxTrack);
if (maxSize.x < cs->cx) cs->cx = maxSize.x;
if (maxSize.y < cs->cy) cs->cy = maxSize.y;
if (cs->cx < minTrack.x ) cs->cx = minTrack.x;
if (cs->cy < minTrack.y ) cs->cy = minTrack.y;
}
if(cs->style & WS_CHILD)
{
if(cs->cx < 0) cs->cx = 0;
if(cs->cy < 0) cs->cy = 0;
}
else
{
if (cs->cx <= 0) cs->cx = 1;
if (cs->cy <= 0) cs->cy = 1;
}
wndPtr->rectWindow.left = cs->x;
wndPtr->rectWindow.top = cs->y;
wndPtr->rectWindow.right = cs->x + cs->cx;
wndPtr->rectWindow.bottom = cs->y + cs->cy;
wndPtr->rectClient = wndPtr->rectWindow;
if(!wndPtr->pDriver->pCreateWindow(wndPtr, classPtr, cs, unicode))
{
retvalue = FALSE;
goto end;
}
/* Set the window menu */
if ((wndPtr->dwStyle & (WS_CAPTION | WS_CHILD)) == WS_CAPTION )
{
if (cs->hMenu) SetMenu(hwnd, cs->hMenu);
else
{
#if 0 /* FIXME: should check if classPtr->menuNameW can be used as is */
if (classPtr->menuNameA)
cs->hMenu = HIWORD(classPtr->menuNameA) ?
LoadMenu(cs->hInstance,SEGPTR_GET(classPtr->menuNameA)):
LoadMenu(cs->hInstance,(SEGPTR)classPtr->menuNameA);
#else
SEGPTR menuName = (SEGPTR)GetClassLong16( hwnd, GCL_MENUNAME );
if (menuName)
{
if (HIWORD(cs->hInstance))
cs->hMenu = LoadMenuA(cs->hInstance,PTR_SEG_TO_LIN(menuName));
else
cs->hMenu = LoadMenu16(cs->hInstance,menuName);
if (cs->hMenu) SetMenu( hwnd, cs->hMenu );
}
#endif
}
}
else wndPtr->wIDmenu = (UINT)cs->hMenu;
/* Send the WM_CREATE message
* Perhaps we shouldn't allow width/height changes as well.
* See p327 in "Internals".
*/
maxPos.x = wndPtr->rectWindow.left; maxPos.y = wndPtr->rectWindow.top;
localSend32 = unicode ? SendMessageW : SendMessageA;
if( (*localSend32)( hwnd, WM_NCCREATE, 0, (LPARAM)cs) )
{
/* Insert the window in the linked list */
WIN_LinkWindow( hwnd, hwndLinkAfter );
WINPOS_SendNCCalcSize( hwnd, FALSE, &wndPtr->rectWindow,
NULL, NULL, 0, &wndPtr->rectClient );
OffsetRect(&wndPtr->rectWindow, maxPos.x - wndPtr->rectWindow.left,
maxPos.y - wndPtr->rectWindow.top);
if( ((*localSend32)( hwnd, WM_CREATE, 0, (LPARAM)cs )) != -1 )
{
/* Send the size messages */
if (!(wndPtr->flags & WIN_NEED_SIZE))
{
/* send it anyway */
if (((wndPtr->rectClient.right-wndPtr->rectClient.left) <0)
||((wndPtr->rectClient.bottom-wndPtr->rectClient.top)<0))
WARN_(win)("sending bogus WM_SIZE message 0x%08lx\n",
MAKELONG(wndPtr->rectClient.right-wndPtr->rectClient.left,
wndPtr->rectClient.bottom-wndPtr->rectClient.top));
SendMessageA( hwnd, WM_SIZE, SIZE_RESTORED,
MAKELONG(wndPtr->rectClient.right-wndPtr->rectClient.left,
wndPtr->rectClient.bottom-wndPtr->rectClient.top));
SendMessageA( hwnd, WM_MOVE, 0,
MAKELONG( wndPtr->rectClient.left,
wndPtr->rectClient.top ) );
}
/* Show the window, maximizing or minimizing if needed */
if (wndPtr->dwStyle & (WS_MINIMIZE | WS_MAXIMIZE))
{
RECT16 newPos;
UINT16 swFlag = (wndPtr->dwStyle & WS_MINIMIZE) ? SW_MINIMIZE : SW_MAXIMIZE;
wndPtr->dwStyle &= ~(WS_MAXIMIZE | WS_MINIMIZE);
WINPOS_MinMaximize( wndPtr, swFlag, &newPos );
swFlag = ((wndPtr->dwStyle & WS_CHILD) || GetActiveWindow())
? SWP_NOACTIVATE | SWP_NOZORDER | SWP_FRAMECHANGED
: SWP_NOZORDER | SWP_FRAMECHANGED;
SetWindowPos( hwnd, 0, newPos.left, newPos.top,
newPos.right, newPos.bottom, swFlag );
}
if( wndPtr->dwStyle & WS_CHILD && !(wndPtr->dwExStyle & WS_EX_NOPARENTNOTIFY) )
{
/* Notify the parent window only */
SendMessageA( wndPtr->parent->hwndSelf, WM_PARENTNOTIFY,
MAKEWPARAM(WM_CREATE, wndPtr->wIDmenu), (LPARAM)hwnd );
if( !IsWindow(hwnd) )
{
retvalue = 0;
goto end;
}
}
if (cs->style & WS_VISIBLE) ShowWindow( hwnd, sw );
/* Call WH_SHELL hook */
if (!(wndPtr->dwStyle & WS_CHILD) && !wndPtr->owner)
HOOK_CallHooks16( WH_SHELL, HSHELL_WINDOWCREATED, hwnd, 0 );
TRACE_(win)("created window %04x\n", hwnd);
retvalue = hwnd;
goto end;
}
WIN_UnlinkWindow( hwnd );
}
/* Abort window creation */
WARN_(win)("aborted by WM_xxCREATE!\n");
WIN_ReleaseWndPtr(WIN_DestroyWindow( wndPtr ));
retvalue = 0;
end:
WIN_ReleaseWndPtr(wndPtr);
return retvalue;
}
/***********************************************************************
* CreateWindow16 (USER.41)
*/
HWND16 WINAPI CreateWindow16( LPCSTR className, LPCSTR windowName,
DWORD style, INT16 x, INT16 y, INT16 width,
INT16 height, HWND16 parent, HMENU16 menu,
HINSTANCE16 instance, LPVOID data )
{
return CreateWindowEx16( 0, className, windowName, style,
x, y, width, height, parent, menu, instance, data );
}
/***********************************************************************
* CreateWindowEx16 (USER.452)
*/
HWND16 WINAPI CreateWindowEx16( DWORD exStyle, LPCSTR className,
LPCSTR windowName, DWORD style, INT16 x,
INT16 y, INT16 width, INT16 height,
HWND16 parent, HMENU16 menu,
HINSTANCE16 instance, LPVOID data )
{
ATOM classAtom;
CREATESTRUCTA cs;
/* Find the class atom */
if (!(classAtom = GlobalFindAtomA( className )))
{
fprintf( stderr, "CreateWindowEx16: bad class name " );
if (!HIWORD(className)) fprintf( stderr, "%04x\n", LOWORD(className) );
else fprintf( stderr, "'%s'\n", className );
return 0;
}
/* Fix the coordinates */
cs.x = (x == CW_USEDEFAULT16) ? CW_USEDEFAULT : (INT)x;
cs.y = (y == CW_USEDEFAULT16) ? CW_USEDEFAULT : (INT)y;
cs.cx = (width == CW_USEDEFAULT16) ? CW_USEDEFAULT : (INT)width;
cs.cy = (height == CW_USEDEFAULT16) ? CW_USEDEFAULT : (INT)height;
/* Create the window */
cs.lpCreateParams = data;
cs.hInstance = (HINSTANCE)instance;
cs.hMenu = (HMENU)menu;
cs.hwndParent = (HWND)parent;
cs.style = style;
cs.lpszName = windowName;
cs.lpszClass = className;
cs.dwExStyle = exStyle;
return WIN_CreateWindowEx( &cs, classAtom, FALSE, FALSE );
}
/***********************************************************************
* CreateWindowEx32A (USER32.83)
*/
HWND WINAPI CreateWindowExA( DWORD exStyle, LPCSTR className,
LPCSTR windowName, DWORD style, INT x,
INT y, INT width, INT height,
HWND parent, HMENU menu,
HINSTANCE instance, LPVOID data )
{
ATOM classAtom;
CREATESTRUCTA cs;
if(exStyle & WS_EX_MDICHILD)
return MDI_CreateMDIWindowA(className, windowName, style, x, y, width, height, parent, instance, (LPARAM)data);
/* Find the class atom */
if (!(classAtom = GlobalFindAtomA( className )))
{
fprintf( stderr, "CreateWindowEx32A: bad class name " );
if (!HIWORD(className)) fprintf( stderr, "%04x\n", LOWORD(className) );
else fprintf( stderr, "'%s'\n", className );
return 0;
}
/* Create the window */
cs.lpCreateParams = data;
cs.hInstance = instance;
cs.hMenu = menu;
cs.hwndParent = parent;
cs.x = x;
cs.y = y;
cs.cx = width;
cs.cy = height;
cs.style = style;
cs.lpszName = windowName;
cs.lpszClass = className;
cs.dwExStyle = exStyle;
return WIN_CreateWindowEx( &cs, classAtom, TRUE, FALSE );
}
/***********************************************************************
* CreateWindowEx32W (USER32.84)
*/
HWND WINAPI CreateWindowExW( DWORD exStyle, LPCWSTR className,
LPCWSTR windowName, DWORD style, INT x,
INT y, INT width, INT height,
HWND parent, HMENU menu,
HINSTANCE instance, LPVOID data )
{
ATOM classAtom;
CREATESTRUCTW cs;
if(exStyle & WS_EX_MDICHILD)
return MDI_CreateMDIWindowW(className, windowName, style, x, y, width, height, parent, instance, (LPARAM)data);
/* Find the class atom */
if (!(classAtom = GlobalFindAtomW( className )))
{
if (HIWORD(className))
{
LPSTR cn = HEAP_strdupWtoA( GetProcessHeap(), 0, className );
WARN_(win)("Bad class name '%s'\n",cn);
HeapFree( GetProcessHeap(), 0, cn );
}
else
WARN_(win)("Bad class name %p\n", className );
return 0;
}
/* Create the window */
cs.lpCreateParams = data;
cs.hInstance = instance;
cs.hMenu = menu;
cs.hwndParent = parent;
cs.x = x;
cs.y = y;
cs.cx = width;
cs.cy = height;
cs.style = style;
cs.lpszName = windowName;
cs.lpszClass = className;
cs.dwExStyle = exStyle;
/* Note: we rely on the fact that CREATESTRUCT32A and */
/* CREATESTRUCT32W have the same layout. */
return WIN_CreateWindowEx( (CREATESTRUCTA *)&cs, classAtom, TRUE, TRUE );
}
/***********************************************************************
* WIN_CheckFocus
*/
static void WIN_CheckFocus( WND* pWnd )
{
if( GetFocus16() == pWnd->hwndSelf )
SetFocus16( (pWnd->dwStyle & WS_CHILD) ? pWnd->parent->hwndSelf : 0 );
}
/***********************************************************************
* WIN_SendDestroyMsg
*/
static void WIN_SendDestroyMsg( WND* pWnd )
{
WIN_CheckFocus(pWnd);
if( CARET_GetHwnd() == pWnd->hwndSelf ) DestroyCaret();
CLIPBOARD_Driver->pResetOwner( pWnd, TRUE );
/*
* Send the WM_DESTROY to the window.
*/
SendMessageA( pWnd->hwndSelf, WM_DESTROY, 0, 0);
/*
* This WM_DESTROY message can trigger re-entrant calls to DestroyWindow
* make sure that the window still exists when we come back.
*/
if (IsWindow(pWnd->hwndSelf))
{
HWND* pWndArray = NULL;
WND* pChild = NULL;
int nKidCount = 0;
/*
* Now, if the window has kids, we have to send WM_DESTROY messages
* recursively to it's kids. It seems that those calls can also
* trigger re-entrant calls to DestroyWindow for the kids so we must
* protect against corruption of the list of siblings. We first build
* a list of HWNDs representing all the kids.
*/
pChild = WIN_LockWndPtr(pWnd->child);
while( pChild )
{
nKidCount++;
WIN_UpdateWndPtr(&pChild,pChild->next);
}
/*
* If there are no kids, we're done.
*/
if (nKidCount==0)
return;
pWndArray = HeapAlloc(GetProcessHeap(), 0, nKidCount*sizeof(HWND));
/*
* Sanity check
*/
if (pWndArray==NULL)
return;
/*
* Now, enumerate all the kids in a list, since we wait to make the SendMessage
* call, our linked list of siblings should be safe.
*/
nKidCount = 0;
pChild = WIN_LockWndPtr(pWnd->child);
while( pChild )
{
pWndArray[nKidCount] = pChild->hwndSelf;
nKidCount++;
WIN_UpdateWndPtr(&pChild,pChild->next);
}
/*
* Now that we have a list, go through that list again and send the destroy
* message to those windows. We are using the HWND to retrieve the
* WND pointer so we are effectively checking that all the kid windows are
* still valid before sending the message.
*/
while (nKidCount>0)
{
pChild = WIN_FindWndPtr(pWndArray[--nKidCount]);
if (pChild!=NULL)
{
WIN_SendDestroyMsg( pChild );
WIN_ReleaseWndPtr(pChild);
}
}
/*
* Cleanup
*/
HeapFree(GetProcessHeap(), 0, pWndArray);
WIN_CheckFocus(pWnd);
}
else
WARN_(win)("\tdestroyed itself while in WM_DESTROY!\n");
}
/***********************************************************************
* DestroyWindow16 (USER.53)
*/
BOOL16 WINAPI DestroyWindow16( HWND16 hwnd )
{
return DestroyWindow(hwnd);
}
/***********************************************************************
* DestroyWindow32 (USER32.135)
*/
BOOL WINAPI DestroyWindow( HWND hwnd )
{
WND * wndPtr;
BOOL retvalue;
TRACE_(win)("(%04x)\n", hwnd);
/* Initialization */
if (!(wndPtr = WIN_FindWndPtr( hwnd ))) return FALSE;
if (wndPtr == pWndDesktop)
{
WIN_ReleaseWndPtr(wndPtr);
return FALSE; /* Can't destroy desktop */
}
/* Call hooks */
if( HOOK_CallHooks16( WH_CBT, HCBT_DESTROYWND, hwnd, 0L) )
{
retvalue = FALSE;
goto end;
}
if (!(wndPtr->dwStyle & WS_CHILD) && !wndPtr->owner)
{
HOOK_CallHooks16( WH_SHELL, HSHELL_WINDOWDESTROYED, hwnd, 0L );
/* FIXME: clean up palette - see "Internals" p.352 */
}
if( !QUEUE_IsExitingQueue(wndPtr->hmemTaskQ) )
if( wndPtr->dwStyle & WS_CHILD && !(wndPtr->dwExStyle & WS_EX_NOPARENTNOTIFY) )
{
/* Notify the parent window only */
SendMessageA( wndPtr->parent->hwndSelf, WM_PARENTNOTIFY,
MAKEWPARAM(WM_DESTROY, wndPtr->wIDmenu), (LPARAM)hwnd );
if( !IsWindow(hwnd) )
{
retvalue = TRUE;
goto end;
}
}
CLIPBOARD_Driver->pResetOwner( wndPtr, FALSE ); /* before the window is unmapped */
/* Hide the window */
if (wndPtr->dwStyle & WS_VISIBLE)
{
SetWindowPos( hwnd, 0, 0, 0, 0, 0, SWP_HIDEWINDOW |
SWP_NOACTIVATE|SWP_NOZORDER|SWP_NOMOVE|SWP_NOSIZE|
((QUEUE_IsExitingQueue(wndPtr->hmemTaskQ))?SWP_DEFERERASE:0) );
if (!IsWindow(hwnd))
{
retvalue = TRUE;
goto end;
}
}
/* Recursively destroy owned windows */
if( !(wndPtr->dwStyle & WS_CHILD) )
{
/* make sure top menu popup doesn't get destroyed */
MENU_PatchResidentPopup( (HQUEUE16)0xFFFF, wndPtr );
for (;;)
{
WND *siblingPtr = WIN_LockWndPtr(wndPtr->parent->child); /* First sibling */
while (siblingPtr)
{
if (siblingPtr->owner == wndPtr)
{
if (siblingPtr->hmemTaskQ == wndPtr->hmemTaskQ)
break;
else
siblingPtr->owner = NULL;
}
WIN_UpdateWndPtr(&siblingPtr,siblingPtr->next);
}
if (siblingPtr)
{
DestroyWindow( siblingPtr->hwndSelf );
WIN_ReleaseWndPtr(siblingPtr);
}
else break;
}
if( !Options.managed || EVENT_CheckFocus() )
WINPOS_ActivateOtherWindow(wndPtr);
if( wndPtr->owner &&
wndPtr->owner->hwndLastActive == wndPtr->hwndSelf )
wndPtr->owner->hwndLastActive = wndPtr->owner->hwndSelf;
}
/* Send destroy messages */
WIN_SendDestroyMsg( wndPtr );
if (!IsWindow(hwnd))
{
retvalue = TRUE;
goto end;
}
/* Unlink now so we won't bother with the children later on */
if( wndPtr->parent ) WIN_UnlinkWindow(hwnd);
/* Destroy the window storage */
WIN_ReleaseWndPtr(WIN_DestroyWindow( wndPtr ));
retvalue = TRUE;
end:
WIN_ReleaseWndPtr(wndPtr);
return retvalue;
}
/***********************************************************************
* CloseWindow16 (USER.43)
*/
BOOL16 WINAPI CloseWindow16( HWND16 hwnd )
{
return CloseWindow( hwnd );
}
/***********************************************************************
* CloseWindow32 (USER32.56)
*/
BOOL WINAPI CloseWindow( HWND hwnd )
{
WND * wndPtr = WIN_FindWndPtr( hwnd );
BOOL retvalue;
if (!wndPtr || (wndPtr->dwStyle & WS_CHILD))
{
retvalue = FALSE;
goto end;
}
ShowWindow( hwnd, SW_MINIMIZE );
retvalue = TRUE;
end:
WIN_ReleaseWndPtr(wndPtr);
return retvalue;
}
/***********************************************************************
* OpenIcon16 (USER.44)
*/
BOOL16 WINAPI OpenIcon16( HWND16 hwnd )
{
return OpenIcon( hwnd );
}
/***********************************************************************
* OpenIcon32 (USER32.410)
*/
BOOL WINAPI OpenIcon( HWND hwnd )
{
if (!IsIconic( hwnd )) return FALSE;
ShowWindow( hwnd, SW_SHOWNORMAL );
return TRUE;
}
/***********************************************************************
* WIN_FindWindow
*
* Implementation of FindWindow() and FindWindowEx().
*/
static HWND WIN_FindWindow( HWND parent, HWND child, ATOM className,
LPCSTR title )
{
WND *pWnd;
HWND retvalue;
CLASS *pClass = NULL;
if (child)
{
if (!(pWnd = WIN_FindWndPtr( child ))) return 0;
if (parent)
{
if (!pWnd->parent || (pWnd->parent->hwndSelf != parent))
{
retvalue = 0;
goto end;
}
}
else if (pWnd->parent != pWndDesktop)
{
retvalue = 0;
goto end;
}
WIN_UpdateWndPtr(&pWnd,pWnd->next);
}
else
{
if (!(pWnd = parent ? WIN_FindWndPtr(parent) : WIN_LockWndPtr(pWndDesktop)))
{
retvalue = 0;
goto end;
}
WIN_UpdateWndPtr(&pWnd,pWnd->child);
}
if (!pWnd)
{
retvalue = 0;
goto end;
}
/* For a child window, all siblings will have the same hInstance, */
/* so we can look for the class once and for all. */
if (className && (pWnd->dwStyle & WS_CHILD))
{
if (!(pClass = CLASS_FindClassByAtom( className, pWnd->hInstance )))
{
retvalue = 0;
goto end;
}
}
for ( ; pWnd ; WIN_UpdateWndPtr(&pWnd,pWnd->next))
{
if (className && !(pWnd->dwStyle & WS_CHILD))
{
if (!(pClass = CLASS_FindClassByAtom( className, pWnd->hInstance)))
continue; /* Skip this window */
}
if (pClass && (pWnd->class != pClass))
continue; /* Not the right class */
/* Now check the title */
if (!title)
{
retvalue = pWnd->hwndSelf;
goto end;
}
if (pWnd->text && !strcmp( pWnd->text, title ))
{
retvalue = pWnd->hwndSelf;
goto end;
}
}
retvalue = 0;
end:
WIN_ReleaseWndPtr(pWnd);
return retvalue;
}
/***********************************************************************
* FindWindow16 (USER.50)
*/
HWND16 WINAPI FindWindow16( SEGPTR className, LPCSTR title )
{
return FindWindowEx16( 0, 0, className, title );
}
/***********************************************************************
* FindWindowEx16 (USER.427)
*/
HWND16 WINAPI FindWindowEx16( HWND16 parent, HWND16 child,
SEGPTR className, LPCSTR title )
{
ATOM atom = 0;
TRACE_(win)("%04x %04x '%s' '%s'\n", parent,
child, HIWORD(className)?(char *)PTR_SEG_TO_LIN(className):"",
title ? title : "");
if (className)
{
/* If the atom doesn't exist, then no class */
/* with this name exists either. */
if (!(atom = GlobalFindAtom16( className ))) return 0;
}
return WIN_FindWindow( parent, child, atom, title );
}
/***********************************************************************
* FindWindow32A (USER32.198)
*/
HWND WINAPI FindWindowA( LPCSTR className, LPCSTR title )
{
HWND ret = FindWindowExA( 0, 0, className, title );
if (!ret) SetLastError (ERROR_CANNOT_FIND_WND_CLASS);
return ret;
}
/***********************************************************************
* FindWindowEx32A (USER32.199)
*/
HWND WINAPI FindWindowExA( HWND parent, HWND child,
LPCSTR className, LPCSTR title )
{
ATOM atom = 0;
if (className)
{
/* If the atom doesn't exist, then no class */
/* with this name exists either. */
if (!(atom = GlobalFindAtomA( className )))
{
SetLastError (ERROR_CANNOT_FIND_WND_CLASS);
return 0;
}
}
return WIN_FindWindow( parent, child, atom, title );
}
/***********************************************************************
* FindWindowEx32W (USER32.200)
*/
HWND WINAPI FindWindowExW( HWND parent, HWND child,
LPCWSTR className, LPCWSTR title )
{
ATOM atom = 0;
char *buffer;
HWND hwnd;
if (className)
{
/* If the atom doesn't exist, then no class */
/* with this name exists either. */
if (!(atom = GlobalFindAtomW( className )))
{
SetLastError (ERROR_CANNOT_FIND_WND_CLASS);
return 0;
}
}
buffer = HEAP_strdupWtoA( GetProcessHeap(), 0, title );
hwnd = WIN_FindWindow( parent, child, atom, buffer );
HeapFree( GetProcessHeap(), 0, buffer );
return hwnd;
}
/***********************************************************************
* FindWindow32W (USER32.201)
*/
HWND WINAPI FindWindowW( LPCWSTR className, LPCWSTR title )
{
return FindWindowExW( 0, 0, className, title );
}
/**********************************************************************
* WIN_GetDesktop
* returns a locked pointer
*/
WND *WIN_GetDesktop(void)
{
return WIN_LockWndPtr(pWndDesktop);
}
/**********************************************************************
* WIN_ReleaseDesktop
* unlock the desktop pointer
*/
void WIN_ReleaseDesktop(void)
{
WIN_ReleaseWndPtr(pWndDesktop);
}
/**********************************************************************
* GetDesktopWindow16 (USER.286)
*/
HWND16 WINAPI GetDesktopWindow16(void)
{
return (HWND16)pWndDesktop->hwndSelf;
}
/**********************************************************************
* GetDesktopWindow32 (USER32.232)
*/
HWND WINAPI GetDesktopWindow(void)
{
return pWndDesktop->hwndSelf;
}
/**********************************************************************
* GetDesktopHwnd (USER.278)
*
* Exactly the same thing as GetDesktopWindow(), but not documented.
* Don't ask me why...
*/
HWND16 WINAPI GetDesktopHwnd16(void)
{
return (HWND16)pWndDesktop->hwndSelf;
}
/*******************************************************************
* EnableWindow16 (USER.34)
*/
BOOL16 WINAPI EnableWindow16( HWND16 hwnd, BOOL16 enable )
{
return EnableWindow( hwnd, enable );
}
/*******************************************************************
* EnableWindow32 (USER32.172)
*/
BOOL WINAPI EnableWindow( HWND hwnd, BOOL enable )
{
WND *wndPtr;
BOOL retvalue;
TRACE_(win)("EnableWindow32: ( %x, %d )\n", hwnd, enable);
if (!(wndPtr = WIN_FindWndPtr( hwnd ))) return FALSE;
if (enable && (wndPtr->dwStyle & WS_DISABLED))
{
/* Enable window */
wndPtr->dwStyle &= ~WS_DISABLED;
if( wndPtr->flags & WIN_NATIVE )
wndPtr->pDriver->pSetHostAttr( wndPtr, HAK_ACCEPTFOCUS, TRUE );
SendMessageA( hwnd, WM_ENABLE, TRUE, 0 );
retvalue = TRUE;
goto end;
}
else if (!enable && !(wndPtr->dwStyle & WS_DISABLED))
{
SendMessageA( wndPtr->hwndSelf, WM_CANCELMODE, 0, 0);
/* Disable window */
wndPtr->dwStyle |= WS_DISABLED;
if( wndPtr->flags & WIN_NATIVE )
wndPtr->pDriver->pSetHostAttr( wndPtr, HAK_ACCEPTFOCUS, FALSE );
if (hwnd == GetFocus())
{
SetFocus( 0 ); /* A disabled window can't have the focus */
}
if ((hwnd == GetCapture()) || IsChild( hwnd, GetCapture() ))
{
ReleaseCapture(); /* A disabled window can't capture the mouse */
}
SendMessageA( hwnd, WM_ENABLE, FALSE, 0 );
retvalue = FALSE;
goto end;
}
retvalue = ((wndPtr->dwStyle & WS_DISABLED) != 0);
end:
WIN_ReleaseWndPtr(wndPtr);
return retvalue;
}
/***********************************************************************
* IsWindowEnabled16 (USER.35)
*/
BOOL16 WINAPI IsWindowEnabled16(HWND16 hWnd)
{
return IsWindowEnabled(hWnd);
}
/***********************************************************************
* IsWindowEnabled32 (USER32.349)
*/
BOOL WINAPI IsWindowEnabled(HWND hWnd)
{
WND * wndPtr;
BOOL retvalue;
if (!(wndPtr = WIN_FindWndPtr(hWnd))) return FALSE;
retvalue = !(wndPtr->dwStyle & WS_DISABLED);
WIN_ReleaseWndPtr(wndPtr);
return retvalue;
}
/***********************************************************************
* IsWindowUnicode (USER32.350)
*/
BOOL WINAPI IsWindowUnicode( HWND hwnd )
{
WND * wndPtr;
BOOL retvalue;
if (!(wndPtr = WIN_FindWndPtr(hwnd))) return FALSE;
retvalue = (WINPROC_GetProcType( wndPtr->winproc ) == WIN_PROC_32W);
WIN_ReleaseWndPtr(wndPtr);
return retvalue;
}
/**********************************************************************
* GetWindowWord16 (USER.133)
*/
WORD WINAPI GetWindowWord16( HWND16 hwnd, INT16 offset )
{
return GetWindowWord( hwnd, offset );
}
/**********************************************************************
* GetWindowWord32 (USER32.314)
*/
WORD WINAPI GetWindowWord( HWND hwnd, INT offset )
{
WORD retvalue;
WND * wndPtr = WIN_FindWndPtr( hwnd );
if (!wndPtr) return 0;
if (offset >= 0)
{
if (offset + sizeof(WORD) > wndPtr->class->cbWndExtra)
{
WARN_(win)("Invalid offset %d\n", offset );
retvalue = 0;
goto end;
}
retvalue = *(WORD *)(((char *)wndPtr->wExtra) + offset);
goto end;
}
switch(offset)
{
case GWW_ID:
if (HIWORD(wndPtr->wIDmenu))
WARN_(win)("GWW_ID: discards high bits of 0x%08x!\n",
wndPtr->wIDmenu);
retvalue = (WORD)wndPtr->wIDmenu;
goto end;
case GWW_HWNDPARENT:
retvalue = GetParent(hwnd);
goto end;
case GWW_HINSTANCE:
if (HIWORD(wndPtr->hInstance))
WARN_(win)("GWW_HINSTANCE: discards high bits of 0x%08x!\n",
wndPtr->hInstance);
retvalue = (WORD)wndPtr->hInstance;
goto end;
default:
WARN_(win)("Invalid offset %d\n", offset );
retvalue = 0;
goto end;
}
end:
WIN_ReleaseWndPtr(wndPtr);
return retvalue;
}
/**********************************************************************
* SetWindowWord16 (USER.134)
*/
WORD WINAPI SetWindowWord16( HWND16 hwnd, INT16 offset, WORD newval )
{
return SetWindowWord( hwnd, offset, newval );
}
/**********************************************************************
* SetWindowWord32 (USER32.524)
*/
WORD WINAPI SetWindowWord( HWND hwnd, INT offset, WORD newval )
{
WORD *ptr, retval;
WND * wndPtr = WIN_FindWndPtr( hwnd );
if (!wndPtr) return 0;
if (offset >= 0)
{
if (offset + sizeof(WORD) > wndPtr->class->cbWndExtra)
{
WARN_(win)("Invalid offset %d\n", offset );
retval = 0;
goto end;
}
ptr = (WORD *)(((char *)wndPtr->wExtra) + offset);
}
else switch(offset)
{
case GWW_ID: ptr = (WORD *)&wndPtr->wIDmenu; break;
case GWW_HINSTANCE: ptr = (WORD *)&wndPtr->hInstance; break;
case GWW_HWNDPARENT: retval = SetParent( hwnd, newval );
goto end;
default:
WARN_(win)("Invalid offset %d\n", offset );
retval = 0;
goto end;
}
retval = *ptr;
*ptr = newval;
end:
WIN_ReleaseWndPtr(wndPtr);
return retval;
}
/**********************************************************************
* WIN_GetWindowLong
*
* Helper function for GetWindowLong().
*/
static LONG WIN_GetWindowLong( HWND hwnd, INT offset, WINDOWPROCTYPE type )
{
LONG retvalue;
WND * wndPtr = WIN_FindWndPtr( hwnd );
if (!wndPtr) return 0;
if (offset >= 0)
{
if (offset + sizeof(LONG) > wndPtr->class->cbWndExtra)
{
WARN_(win)("Invalid offset %d\n", offset );
retvalue = 0;
goto end;
}
retvalue = *(LONG *)(((char *)wndPtr->wExtra) + offset);
/* Special case for dialog window procedure */
if ((offset == DWL_DLGPROC) && (wndPtr->flags & WIN_ISDIALOG))
{
retvalue = (LONG)WINPROC_GetProc( (HWINDOWPROC)retvalue, type );
goto end;
}
goto end;
}
switch(offset)
{
case GWL_USERDATA: retvalue = wndPtr->userdata;
goto end;
case GWL_STYLE: retvalue = wndPtr->dwStyle;
goto end;
case GWL_EXSTYLE: retvalue = wndPtr->dwExStyle;
goto end;
case GWL_ID: retvalue = (LONG)wndPtr->wIDmenu;
goto end;
case GWL_WNDPROC: retvalue = (LONG)WINPROC_GetProc( wndPtr->winproc,
type );
goto end;
case GWL_HWNDPARENT: retvalue = GetParent(hwnd);
goto end;
case GWL_HINSTANCE: retvalue = wndPtr->hInstance;
goto end;
default:
WARN_(win)("Unknown offset %d\n", offset );
}
retvalue = 0;
end:
WIN_ReleaseWndPtr(wndPtr);
return retvalue;
}
/**********************************************************************
* WIN_SetWindowLong
*
* Helper function for SetWindowLong().
*
* 0 is the failure code. However, in the case of failure SetLastError
* must be set to distinguish between a 0 return value and a failure.
*
* FIXME: The error values for SetLastError may not be right. Can
* someone check with the real thing?
*/
static LONG WIN_SetWindowLong( HWND hwnd, INT offset, LONG newval,
WINDOWPROCTYPE type )
{
LONG *ptr, retval;
WND * wndPtr = WIN_FindWndPtr( hwnd );
STYLESTRUCT style;
TRACE_(win)("%x=%p %x %lx %x\n",hwnd, wndPtr, offset, newval, type);
if (!wndPtr)
{
/* Is this the right error? */
SetLastError( ERROR_INVALID_WINDOW_HANDLE );
return 0;
}
if (offset >= 0)
{
if (offset + sizeof(LONG) > wndPtr->class->cbWndExtra)
{
WARN_(win)("Invalid offset %d\n", offset );
/* Is this the right error? */
SetLastError( ERROR_OUTOFMEMORY );
retval = 0;
goto end;
}
ptr = (LONG *)(((char *)wndPtr->wExtra) + offset);
/* Special case for dialog window procedure */
if ((offset == DWL_DLGPROC) && (wndPtr->flags & WIN_ISDIALOG))
{
retval = (LONG)WINPROC_GetProc( (HWINDOWPROC)*ptr, type );
WINPROC_SetProc( (HWINDOWPROC *)ptr, (WNDPROC16)newval,
type, WIN_PROC_WINDOW );
goto end;
}
}
else switch(offset)
{
case GWL_ID:
ptr = (DWORD*)&wndPtr->wIDmenu;
break;
case GWL_HINSTANCE:
retval = SetWindowWord( hwnd, offset, newval );
goto end;
case GWL_WNDPROC:
retval = (LONG)WINPROC_GetProc( wndPtr->winproc, type );
WINPROC_SetProc( &wndPtr->winproc, (WNDPROC16)newval,
type, WIN_PROC_WINDOW );
goto end;;
case GWL_STYLE:
style.styleOld = wndPtr->dwStyle;
newval &= ~(WS_VISIBLE | WS_CHILD); /* Some bits can't be changed this way */
style.styleNew = newval | (style.styleOld & (WS_VISIBLE | WS_CHILD));
if (wndPtr->flags & WIN_ISWIN32)
SendMessageA(hwnd,WM_STYLECHANGING,GWL_STYLE,(LPARAM)&style);
wndPtr->dwStyle = style.styleNew;
if (wndPtr->flags & WIN_ISWIN32)
SendMessageA(hwnd,WM_STYLECHANGED,GWL_STYLE,(LPARAM)&style);
retval = style.styleOld;
goto end;
case GWL_USERDATA:
ptr = &wndPtr->userdata;
break;
case GWL_EXSTYLE:
style.styleOld = wndPtr->dwExStyle;
style.styleNew = newval;
if (wndPtr->flags & WIN_ISWIN32)
SendMessageA(hwnd,WM_STYLECHANGING,GWL_EXSTYLE,(LPARAM)&style);
wndPtr->dwExStyle = newval;
if (wndPtr->flags & WIN_ISWIN32)
SendMessageA(hwnd,WM_STYLECHANGED,GWL_EXSTYLE,(LPARAM)&style);
retval = style.styleOld;
goto end;
default:
WARN_(win)("Invalid offset %d\n", offset );
/* Don't think this is right error but it should do */
SetLastError( ERROR_OUTOFMEMORY );
retval = 0;
goto end;
}
retval = *ptr;
*ptr = newval;
end:
WIN_ReleaseWndPtr(wndPtr);
return retval;
}
/**********************************************************************
* GetWindowLong16 (USER.135)
*/
LONG WINAPI GetWindowLong16( HWND16 hwnd, INT16 offset )
{
return WIN_GetWindowLong( (HWND)hwnd, offset, WIN_PROC_16 );
}
/**********************************************************************
* GetWindowLong32A (USER32.305)
*/
LONG WINAPI GetWindowLongA( HWND hwnd, INT offset )
{
return WIN_GetWindowLong( hwnd, offset, WIN_PROC_32A );
}
/**********************************************************************
* GetWindowLong32W (USER32.306)
*/
LONG WINAPI GetWindowLongW( HWND hwnd, INT offset )
{
return WIN_GetWindowLong( hwnd, offset, WIN_PROC_32W );
}
/**********************************************************************
* SetWindowLong16 (USER.136)
*/
LONG WINAPI SetWindowLong16( HWND16 hwnd, INT16 offset, LONG newval )
{
return WIN_SetWindowLong( hwnd, offset, newval, WIN_PROC_16 );
}
/**********************************************************************
* SetWindowLong32A (USER32.517)
*/
LONG WINAPI SetWindowLongA( HWND hwnd, INT offset, LONG newval )
{
return WIN_SetWindowLong( hwnd, offset, newval, WIN_PROC_32A );
}
/**********************************************************************
* SetWindowLong32W (USER32.518) Set window attribute
*
* SetWindowLong() alters one of a window's attributes or sets a 32-bit (long)
* value in a window's extra memory.
*
* The _hwnd_ parameter specifies the window. is the handle to a
* window that has extra memory. The _newval_ parameter contains the
* new attribute or extra memory value. If positive, the _offset_
* parameter is the byte-addressed location in the window's extra
* memory to set. If negative, _offset_ specifies the window
* attribute to set, and should be one of the following values:
*
* GWL_EXSTYLE The window's extended window style
*
* GWL_STYLE The window's window style.
*
* GWL_WNDPROC Pointer to the window's window procedure.
*
* GWL_HINSTANCE The window's pplication instance handle.
*
* GWL_ID The window's identifier.
*
* GWL_USERDATA The window's user-specified data.
*
* If the window is a dialog box, the _offset_ parameter can be one of
* the following values:
*
* DWL_DLGPROC The address of the window's dialog box procedure.
*
* DWL_MSGRESULT The return value of a message
* that the dialog box procedure processed.
*
* DWL_USER Application specific information.
*
* RETURNS
*
* If successful, returns the previous value located at _offset_. Otherwise,
* returns 0.
*
* NOTES
*
* Extra memory for a window class is specified by a nonzero cbWndExtra
* parameter of the WNDCLASS structure passed to RegisterClass() at the
* time of class creation.
*
* Using GWL_WNDPROC to set a new window procedure effectively creates
* a window subclass. Use CallWindowProc() in the new windows procedure
* to pass messages to the superclass's window procedure.
*
* The user data is reserved for use by the application which created
* the window.
*
* Do not use GWL_STYLE to change the window's WS_DISABLE style;
* instead, call the EnableWindow() function to change the window's
* disabled state.
*
* Do not use GWL_HWNDPARENT to reset the window's parent, use
* SetParent() instead.
*
* Win95:
* When offset is GWL_STYLE and the calling app's ver is 4.0,
* it sends WM_STYLECHANGING before changing the settings
* and WM_STYLECHANGED afterwards.
* App ver 4.0 can't use SetWindowLong to change WS_EX_TOPMOST.
*
* BUGS
*
* GWL_STYLE does not dispatch WM_STYLE... messages.
*
* CONFORMANCE
*
* ECMA-234, Win32
*
*/
LONG WINAPI SetWindowLongW(
HWND hwnd, /* window to alter */
INT offset, /* offset, in bytes, of location to alter */
LONG newval /* new value of location */
) {
return WIN_SetWindowLong( hwnd, offset, newval, WIN_PROC_32W );
}
/*******************************************************************
* GetWindowText16 (USER.36)
*/
INT16 WINAPI GetWindowText16( HWND16 hwnd, SEGPTR lpString, INT16 nMaxCount )
{
return (INT16)SendMessage16(hwnd, WM_GETTEXT, nMaxCount, (LPARAM)lpString);
}
/*******************************************************************
* GetWindowText32A (USER32.309)
*/
INT WINAPI GetWindowTextA( HWND hwnd, LPSTR lpString, INT nMaxCount )
{
return (INT)SendMessageA( hwnd, WM_GETTEXT, nMaxCount,
(LPARAM)lpString );
}
/*******************************************************************
* InternalGetWindowText (USER32.326)
*/
INT WINAPI InternalGetWindowText(HWND hwnd,LPWSTR lpString,INT nMaxCount )
{
FIXME_(win)("(0x%08x,%p,0x%x),stub!\n",hwnd,lpString,nMaxCount);
return GetWindowTextW(hwnd,lpString,nMaxCount);
}
/*******************************************************************
* GetWindowText32W (USER32.312)
*/
INT WINAPI GetWindowTextW( HWND hwnd, LPWSTR lpString, INT nMaxCount )
{
return (INT)SendMessageW( hwnd, WM_GETTEXT, nMaxCount,
(LPARAM)lpString );
}
/*******************************************************************
* SetWindowText16 (USER.37)
*/
BOOL16 WINAPI SetWindowText16( HWND16 hwnd, SEGPTR lpString )
{
return (BOOL16)SendMessage16( hwnd, WM_SETTEXT, 0, (LPARAM)lpString );
}
/*******************************************************************
* SetWindowText32A (USER32.521)
*/
BOOL WINAPI SetWindowTextA( HWND hwnd, LPCSTR lpString )
{
return (BOOL)SendMessageA( hwnd, WM_SETTEXT, 0, (LPARAM)lpString );
}
/*******************************************************************
* SetWindowText32W (USER32.523)
*/
BOOL WINAPI SetWindowTextW( HWND hwnd, LPCWSTR lpString )
{
return (BOOL)SendMessageW( hwnd, WM_SETTEXT, 0, (LPARAM)lpString );
}
/*******************************************************************
* GetWindowTextLength16 (USER.38)
*/
INT16 WINAPI GetWindowTextLength16( HWND16 hwnd )
{
return (INT16)SendMessage16( hwnd, WM_GETTEXTLENGTH, 0, 0 );
}
/*******************************************************************
* GetWindowTextLength32A (USER32.310)
*/
INT WINAPI GetWindowTextLengthA( HWND hwnd )
{
return SendMessageA( hwnd, WM_GETTEXTLENGTH, 0, 0 );
}
/*******************************************************************
* GetWindowTextLength32W (USER32.311)
*/
INT WINAPI GetWindowTextLengthW( HWND hwnd )
{
return SendMessageW( hwnd, WM_GETTEXTLENGTH, 0, 0 );
}
/*******************************************************************
* IsWindow16 (USER.47)
*/
BOOL16 WINAPI IsWindow16( HWND16 hwnd )
{
return IsWindow( hwnd );
}
void WINAPI WIN16_IsWindow16( CONTEXT *context )
{
WORD *stack = PTR_SEG_OFF_TO_LIN(SS_reg(context), SP_reg(context));
HWND16 hwnd = (HWND16)stack[2];
AX_reg(context) = IsWindow( hwnd );
ES_reg(context) = USER_HeapSel;
}
/*******************************************************************
* IsWindow32 (USER32.348)
*/
BOOL WINAPI IsWindow( HWND hwnd )
{
WND * wndPtr;
BOOL retvalue;
if(!(wndPtr = WIN_FindWndPtr( hwnd ))) return FALSE;
retvalue = (wndPtr->dwMagic == WND_MAGIC);
WIN_ReleaseWndPtr(wndPtr);
return retvalue;
}
/*****************************************************************
* GetParent16 (USER.46)
*/
HWND16 WINAPI GetParent16( HWND16 hwnd )
{
return (HWND16)GetParent( hwnd );
}
/*****************************************************************
* GetParent32 (USER32.278)
*/
HWND WINAPI GetParent( HWND hwnd )
{
WND *wndPtr;
HWND retvalue;
if(!(wndPtr = WIN_FindWndPtr(hwnd))) return 0;
if ((!(wndPtr->dwStyle & (WS_POPUP|WS_CHILD))))
{
WIN_ReleaseWndPtr(wndPtr);
return 0;
}
WIN_UpdateWndPtr(&wndPtr,((wndPtr->dwStyle & WS_CHILD) ? wndPtr->parent : wndPtr->owner));
retvalue = wndPtr ? wndPtr->hwndSelf : 0;
WIN_ReleaseWndPtr(wndPtr);
return retvalue;
}
/*****************************************************************
* WIN_GetTopParent
*
* Get the top-level parent for a child window.
* returns a locked pointer
*/
WND* WIN_GetTopParentPtr( WND* pWnd )
{
WND *tmpWnd = WIN_LockWndPtr(pWnd);
while( tmpWnd && (tmpWnd->dwStyle & WS_CHILD))
{
WIN_UpdateWndPtr(&tmpWnd,tmpWnd->parent);
}
return tmpWnd;
}
/*****************************************************************
* WIN_GetTopParent
*
* Get the top-level parent for a child window.
*/
HWND WIN_GetTopParent( HWND hwnd )
{
HWND retvalue;
WND *tmpPtr = WIN_FindWndPtr(hwnd);
WND *wndPtr = WIN_GetTopParentPtr (tmpPtr );
retvalue = wndPtr ? wndPtr->hwndSelf : 0;
WIN_ReleaseWndPtr(tmpPtr);
WIN_ReleaseWndPtr(wndPtr);
return retvalue;
}
/*****************************************************************
* SetParent16 (USER.233)
*/
HWND16 WINAPI SetParent16( HWND16 hwndChild, HWND16 hwndNewParent )
{
return SetParent( hwndChild, hwndNewParent );
}
/*****************************************************************
* SetParent32 (USER32.495)
*/
HWND WINAPI SetParent( HWND hwndChild, HWND hwndNewParent )
{
WND *wndPtr;
DWORD dwStyle;
WND *pWndNewParent;
WND *pWndOldParent;
HWND retvalue;
if(!(wndPtr = WIN_FindWndPtr(hwndChild))) return 0;
dwStyle = wndPtr->dwStyle;
pWndNewParent = hwndNewParent ? WIN_FindWndPtr(hwndNewParent)
: WIN_LockWndPtr(pWndDesktop);
/* Windows hides the window first, then shows it again
* including the WM_SHOWWINDOW messages and all */
if (dwStyle & WS_VISIBLE)
ShowWindow( hwndChild, SW_HIDE );
pWndOldParent = WIN_LockWndPtr((*wndPtr->pDriver->pSetParent)(wndPtr, pWndNewParent));
/* SetParent32 additionally needs to make hwndChild the topmost window
in the x-order and send the expected WM_WINDOWPOSCHANGING and
WM_WINDOWPOSCHANGED notification messages.
*/
SetWindowPos( hwndChild, HWND_TOPMOST, 0, 0, 0, 0,
SWP_NOMOVE|SWP_NOSIZE|((dwStyle & WS_VISIBLE)?SWP_SHOWWINDOW:0));
/* FIXME: a WM_MOVE is also generated (in the DefWindowProc handler
* for WM_WINDOWPOSCHANGED) in Windows, should probably remove SWP_NOMOVE */
retvalue = pWndOldParent?pWndOldParent->hwndSelf:0;
WIN_ReleaseWndPtr(pWndOldParent);
WIN_ReleaseWndPtr(pWndNewParent);
WIN_ReleaseWndPtr(wndPtr);
return retvalue;
}
/*******************************************************************
* IsChild16 (USER.48)
*/
BOOL16 WINAPI IsChild16( HWND16 parent, HWND16 child )
{
return IsChild(parent,child);
}
/*******************************************************************
* IsChild32 (USER32.339)
*/
BOOL WINAPI IsChild( HWND parent, HWND child )
{
WND * wndPtr = WIN_FindWndPtr( child );
while (wndPtr && (wndPtr->dwStyle & WS_CHILD))
{
WIN_UpdateWndPtr(&wndPtr,wndPtr->parent);
if (wndPtr->hwndSelf == parent)
{
WIN_ReleaseWndPtr(wndPtr);
return TRUE;
}
}
WIN_ReleaseWndPtr(wndPtr);
return FALSE;
}
/***********************************************************************
* IsWindowVisible16 (USER.49)
*/
BOOL16 WINAPI IsWindowVisible16( HWND16 hwnd )
{
return IsWindowVisible(hwnd);
}
/***********************************************************************
* IsWindowVisible32 (USER32.351)
*/
BOOL WINAPI IsWindowVisible( HWND hwnd )
{
BOOL retval;
WND *wndPtr = WIN_FindWndPtr( hwnd );
while (wndPtr && (wndPtr->dwStyle & WS_CHILD))
{
if (!(wndPtr->dwStyle & WS_VISIBLE))
{
WIN_ReleaseWndPtr(wndPtr);
return FALSE;
}
WIN_UpdateWndPtr(&wndPtr,wndPtr->parent);
}
retval = (wndPtr && (wndPtr->dwStyle & WS_VISIBLE));
WIN_ReleaseWndPtr(wndPtr);
return retval;
}
/***********************************************************************
* WIN_IsWindowDrawable
*
* hwnd is drawable when it is visible, all parents are not
* minimized, and it is itself not minimized unless we are
* trying to draw its default class icon.
*/
BOOL WIN_IsWindowDrawable( WND* wnd, BOOL icon )
{
if( (wnd->dwStyle & WS_MINIMIZE &&
icon && wnd->class->hIcon) ||
!(wnd->dwStyle & WS_VISIBLE) ) return FALSE;
for(wnd = wnd->parent; wnd; wnd = wnd->parent)
if( wnd->dwStyle & WS_MINIMIZE ||
!(wnd->dwStyle & WS_VISIBLE) ) break;
return (wnd == NULL);
}
/*******************************************************************
* GetTopWindow16 (USER.229)
*/
HWND16 WINAPI GetTopWindow16( HWND16 hwnd )
{
return GetTopWindow(hwnd);
}
/*******************************************************************
* GetTopWindow32 (USER.229)
*/
HWND WINAPI GetTopWindow( HWND hwnd )
{
HWND retval;
WND * wndPtr = NULL;
if (hwnd!=0)
wndPtr = WIN_FindWndPtr( hwnd );
else
wndPtr = WIN_GetDesktop();
if (wndPtr && wndPtr->child)
{
retval = wndPtr->child->hwndSelf;
}
else retval = 0;
WIN_ReleaseWndPtr(wndPtr);
return retval;
}
/*******************************************************************
* GetWindow16 (USER.262)
*/
HWND16 WINAPI GetWindow16( HWND16 hwnd, WORD rel )
{
return GetWindow( hwnd,rel );
}
/*******************************************************************
* GetWindow32 (USER32.302)
*/
HWND WINAPI GetWindow( HWND hwnd, WORD rel )
{
HWND retval;
WND * wndPtr = WIN_FindWndPtr( hwnd );
if (!wndPtr) return 0;
switch(rel)
{
case GW_HWNDFIRST:
if (wndPtr->parent) retval = wndPtr->parent->child->hwndSelf;
else retval = 0;
goto end;
case GW_HWNDLAST:
if (!wndPtr->parent)
{
retval = 0; /* Desktop window */
goto end;
}
while (wndPtr->next)
{
WIN_UpdateWndPtr(&wndPtr,wndPtr->next);
}
retval = wndPtr->hwndSelf;
goto end;
case GW_HWNDNEXT:
if (!wndPtr->next) retval = 0;
else retval = wndPtr->next->hwndSelf;
goto end;
case GW_HWNDPREV:
if (!wndPtr->parent)
{
retval = 0; /* Desktop window */
goto end;
}
WIN_UpdateWndPtr(&wndPtr,wndPtr->parent->child); /* First sibling */
if (wndPtr->hwndSelf == hwnd)
{
retval = 0; /* First in list */
goto end;
}
while (wndPtr->next)
{
if (wndPtr->next->hwndSelf == hwnd)
{
retval = wndPtr->hwndSelf;
goto end;
}
WIN_UpdateWndPtr(&wndPtr,wndPtr->next);
}
retval = 0;
goto end;
case GW_OWNER:
retval = wndPtr->owner ? wndPtr->owner->hwndSelf : 0;
goto end;
case GW_CHILD:
retval = wndPtr->child ? wndPtr->child->hwndSelf : 0;
goto end;
}
retval = 0;
end:
WIN_ReleaseWndPtr(wndPtr);
return retval;
}
/*******************************************************************
* GetNextWindow16 (USER.230)
*/
HWND16 WINAPI GetNextWindow16( HWND16 hwnd, WORD flag )
{
if ((flag != GW_HWNDNEXT) && (flag != GW_HWNDPREV)) return 0;
return GetWindow16( hwnd, flag );
}
/*******************************************************************
* ShowOwnedPopups16 (USER.265)
*/
void WINAPI ShowOwnedPopups16( HWND16 owner, BOOL16 fShow )
{
ShowOwnedPopups( owner, fShow );
}
/*******************************************************************
* ShowOwnedPopups32 (USER32.531)
*/
BOOL WINAPI ShowOwnedPopups( HWND owner, BOOL fShow )
{
WND *pWnd;
pWnd = WIN_LockWndPtr(pWndDesktop->child);
while (pWnd)
{
if (pWnd->owner && (pWnd->owner->hwndSelf == owner) &&
(pWnd->dwStyle & WS_POPUP))
ShowWindow( pWnd->hwndSelf, fShow ? SW_SHOW : SW_HIDE );
WIN_UpdateWndPtr(&pWnd,pWnd->next);
}
return TRUE;
}
/*******************************************************************
* GetLastActivePopup16 (USER.287)
*/
HWND16 WINAPI GetLastActivePopup16( HWND16 hwnd )
{
return GetLastActivePopup( hwnd );
}
/*******************************************************************
* GetLastActivePopup32 (USER32.256)
*/
HWND WINAPI GetLastActivePopup( HWND hwnd )
{
WND *wndPtr;
HWND retval;
wndPtr = WIN_FindWndPtr(hwnd);
if (!wndPtr) return hwnd;
retval = wndPtr->hwndLastActive;
WIN_ReleaseWndPtr(wndPtr);
return retval;
}
/*******************************************************************
* WIN_BuildWinArray
*
* Build an array of pointers to the children of a given window.
* The array must be freed with HeapFree(SystemHeap). Return NULL
* when no windows are found.
*/
WND **WIN_BuildWinArray( WND *wndPtr, UINT bwaFlags, UINT* pTotal )
{
/* Future : this function will lock all windows associated with this array */
WND **list, **ppWnd;
WND *pWnd;
UINT count = 0, skipOwned, skipHidden;
DWORD skipFlags;
skipHidden = bwaFlags & BWA_SKIPHIDDEN;
skipOwned = bwaFlags & BWA_SKIPOWNED;
skipFlags = (bwaFlags & BWA_SKIPDISABLED) ? WS_DISABLED : 0;
if( bwaFlags & BWA_SKIPICONIC ) skipFlags |= WS_MINIMIZE;
/* First count the windows */
if (!wndPtr)
wndPtr = WIN_GetDesktop();
pWnd = WIN_LockWndPtr(wndPtr->child);
while (pWnd)
{
if( !(pWnd->dwStyle & skipFlags) && !(skipOwned && pWnd->owner) &&
(!skipHidden || (pWnd->dwStyle & WS_VISIBLE)) )
count++;
WIN_UpdateWndPtr(&pWnd,pWnd->next);
}
if( count )
{
/* Now build the list of all windows */
if ((list = (WND **)HeapAlloc( SystemHeap, 0, sizeof(WND *) * (count + 1))))
{
for (pWnd = WIN_LockWndPtr(wndPtr->child), ppWnd = list, count = 0; pWnd; WIN_UpdateWndPtr(&pWnd,pWnd->next))
{
if( (pWnd->dwStyle & skipFlags) || (skipOwned && pWnd->owner) );
else if( !skipHidden || pWnd->dwStyle & WS_VISIBLE )
{
*ppWnd++ = pWnd;
count++;
}
}
WIN_ReleaseWndPtr(pWnd);
*ppWnd = NULL;
}
else count = 0;
} else list = NULL;
if( pTotal ) *pTotal = count;
return list;
}
/*******************************************************************
* WIN_ReleaseWinArray
*/
void WIN_ReleaseWinArray(WND **wndArray)
{
/* Future : this function will also unlock all windows associated with wndArray */
HeapFree( SystemHeap, 0, wndArray );
}
/*******************************************************************
* EnumWindows16 (USER.54)
*/
BOOL16 WINAPI EnumWindows16( WNDENUMPROC16 lpEnumFunc, LPARAM lParam )
{
WND **list, **ppWnd;
/* We have to build a list of all windows first, to avoid */
/* unpleasant side-effects, for instance if the callback */
/* function changes the Z-order of the windows. */
if (!(list = WIN_BuildWinArray(WIN_GetDesktop(), 0, NULL )))
{
WIN_ReleaseDesktop();
return FALSE;
}
/* Now call the callback function for every window */
for (ppWnd = list; *ppWnd; ppWnd++)
{
LRESULT lpEnumFuncRetval;
int iWndsLocks = 0;
/* Make sure that the window still exists */
if (!IsWindow((*ppWnd)->hwndSelf)) continue;
/* To avoid any deadlocks, all the locks on the windows
structures must be suspended before the control
is passed to the application */
iWndsLocks = WIN_SuspendWndsLock();
lpEnumFuncRetval = lpEnumFunc( (*ppWnd)->hwndSelf, lParam);
WIN_RestoreWndsLock(iWndsLocks);
if (!lpEnumFuncRetval) break;
}
WIN_ReleaseWinArray(list);
WIN_ReleaseDesktop();
return TRUE;
}
/*******************************************************************
* EnumWindows32 (USER32.193)
*/
BOOL WINAPI EnumWindows( WNDENUMPROC lpEnumFunc, LPARAM lParam )
{
return (BOOL)EnumWindows16( (WNDENUMPROC16)lpEnumFunc, lParam );
}
/**********************************************************************
* EnumTaskWindows16 (USER.225)
*/
BOOL16 WINAPI EnumTaskWindows16( HTASK16 hTask, WNDENUMPROC16 func,
LPARAM lParam )
{
WND **list, **ppWnd;
/* This function is the same as EnumWindows(), */
/* except for an added check on the window's task. */
if (!(list = WIN_BuildWinArray( WIN_GetDesktop(), 0, NULL )))
{
WIN_ReleaseDesktop();
return FALSE;
}
/* Now call the callback function for every window */
for (ppWnd = list; *ppWnd; ppWnd++)
{
LRESULT funcRetval;
int iWndsLocks = 0;
/* Make sure that the window still exists */
if (!IsWindow((*ppWnd)->hwndSelf)) continue;
if (QUEUE_GetQueueTask((*ppWnd)->hmemTaskQ) != hTask) continue;
/* To avoid any deadlocks, all the locks on the windows
structures must be suspended before the control
is passed to the application */
iWndsLocks = WIN_SuspendWndsLock();
funcRetval = func( (*ppWnd)->hwndSelf, lParam );
WIN_RestoreWndsLock(iWndsLocks);
if (!funcRetval) break;
}
WIN_ReleaseWinArray(list);
WIN_ReleaseDesktop();
return TRUE;
}
/**********************************************************************
* EnumThreadWindows (USER32.190)
*/
BOOL WINAPI EnumThreadWindows( DWORD id, WNDENUMPROC func, LPARAM lParam )
{
THDB *tdb = THREAD_IdToTHDB(id);
return (BOOL16)EnumTaskWindows16(tdb->teb.htask16, (WNDENUMPROC16)func, lParam);
}
/**********************************************************************
* WIN_EnumChildWindows
*
* Helper function for EnumChildWindows().
*/
static BOOL16 WIN_EnumChildWindows( WND **ppWnd, WNDENUMPROC16 func,
LPARAM lParam )
{
WND **childList;
BOOL16 ret = FALSE;
for ( ; *ppWnd; ppWnd++)
{
int iWndsLocks = 0;
/* Make sure that the window still exists */
if (!IsWindow((*ppWnd)->hwndSelf)) continue;
/* Build children list first */
childList = WIN_BuildWinArray( *ppWnd, BWA_SKIPOWNED, NULL );
/* To avoid any deadlocks, all the locks on the windows
structures must be suspended before the control
is passed to the application */
iWndsLocks = WIN_SuspendWndsLock();
ret = func( (*ppWnd)->hwndSelf, lParam );
WIN_RestoreWndsLock(iWndsLocks);
if (childList)
{
if (ret) ret = WIN_EnumChildWindows( childList, func, lParam );
WIN_ReleaseWinArray(childList);
}
if (!ret) return FALSE;
}
return TRUE;
}
/**********************************************************************
* EnumChildWindows16 (USER.55)
*/
BOOL16 WINAPI EnumChildWindows16( HWND16 parent, WNDENUMPROC16 func,
LPARAM lParam )
{
WND **list, *pParent;
if (!(pParent = WIN_FindWndPtr( parent ))) return FALSE;
if (!(list = WIN_BuildWinArray( pParent, BWA_SKIPOWNED, NULL )))
{
WIN_ReleaseWndPtr(pParent);
return FALSE;
}
WIN_EnumChildWindows( list, func, lParam );
WIN_ReleaseWinArray(list);
WIN_ReleaseWndPtr(pParent);
return TRUE;
}
/**********************************************************************
* EnumChildWindows32 (USER32.178)
*/
BOOL WINAPI EnumChildWindows( HWND parent, WNDENUMPROC func,
LPARAM lParam )
{
return (BOOL)EnumChildWindows16( (HWND16)parent, (WNDENUMPROC16)func,
lParam );
}
/*******************************************************************
* AnyPopup16 (USER.52)
*/
BOOL16 WINAPI AnyPopup16(void)
{
return AnyPopup();
}
/*******************************************************************
* AnyPopup32 (USER32.4)
*/
BOOL WINAPI AnyPopup(void)
{
WND *wndPtr = WIN_LockWndPtr(pWndDesktop->child);
BOOL retvalue;
while (wndPtr)
{
if (wndPtr->owner && (wndPtr->dwStyle & WS_VISIBLE))
{
retvalue = TRUE;
goto end;
}
WIN_UpdateWndPtr(&wndPtr,wndPtr->next);
}
retvalue = FALSE;
end:
WIN_ReleaseWndPtr(wndPtr);
return retvalue;
}
/*******************************************************************
* FlashWindow16 (USER.105)
*/
BOOL16 WINAPI FlashWindow16( HWND16 hWnd, BOOL16 bInvert )
{
return FlashWindow( hWnd, bInvert );
}
/*******************************************************************
* FlashWindow32 (USER32.202)
*/
BOOL WINAPI FlashWindow( HWND hWnd, BOOL bInvert )
{
WND *wndPtr = WIN_FindWndPtr(hWnd);
TRACE_(win)("%04x\n", hWnd);
if (!wndPtr) return FALSE;
if (wndPtr->dwStyle & WS_MINIMIZE)
{
if (bInvert && !(wndPtr->flags & WIN_NCACTIVATED))
{
HDC hDC = GetDC(hWnd);
if (!SendMessage16( hWnd, WM_ERASEBKGND, (WPARAM16)hDC, 0 ))
wndPtr->flags |= WIN_NEEDS_ERASEBKGND;
ReleaseDC( hWnd, hDC );
wndPtr->flags |= WIN_NCACTIVATED;
}
else
{
PAINT_RedrawWindow( hWnd, 0, 0, RDW_INVALIDATE | RDW_ERASE |
RDW_UPDATENOW | RDW_FRAME, 0 );
wndPtr->flags &= ~WIN_NCACTIVATED;
}
WIN_ReleaseWndPtr(wndPtr);
return TRUE;
}
else
{
WPARAM16 wparam;
if (bInvert) wparam = !(wndPtr->flags & WIN_NCACTIVATED);
else wparam = (hWnd == GetActiveWindow());
SendMessage16( hWnd, WM_NCACTIVATE, wparam, (LPARAM)0 );
WIN_ReleaseWndPtr(wndPtr);
return wparam;
}
}
/*******************************************************************
* SetSysModalWindow16 (USER.188)
*/
HWND16 WINAPI SetSysModalWindow16( HWND16 hWnd )
{
HWND hWndOldModal = hwndSysModal;
hwndSysModal = hWnd;
FIXME_(win)("EMPTY STUB !! SetSysModalWindow(%04x) !\n", hWnd);
return hWndOldModal;
}
/*******************************************************************
* GetSysModalWindow16 (USER.52)
*/
HWND16 WINAPI GetSysModalWindow16(void)
{
return hwndSysModal;
}
/*******************************************************************
* GetWindowContextHelpId (USER32.303)
*/
DWORD WINAPI GetWindowContextHelpId( HWND hwnd )
{
DWORD retval;
WND *wnd = WIN_FindWndPtr( hwnd );
if (!wnd) return 0;
retval = wnd->helpContext;
WIN_ReleaseWndPtr(wnd);
return retval;
}
/*******************************************************************
* SetWindowContextHelpId (USER32.515)
*/
BOOL WINAPI SetWindowContextHelpId( HWND hwnd, DWORD id )
{
WND *wnd = WIN_FindWndPtr( hwnd );
if (!wnd) return FALSE;
wnd->helpContext = id;
WIN_ReleaseWndPtr(wnd);
return TRUE;
}
/*******************************************************************
* DRAG_QueryUpdate
*
* recursively find a child that contains spDragInfo->pt point
* and send WM_QUERYDROPOBJECT
*/
BOOL16 DRAG_QueryUpdate( HWND hQueryWnd, SEGPTR spDragInfo, BOOL bNoSend )
{
BOOL16 wParam,bResult = 0;
POINT pt;
LPDRAGINFO ptrDragInfo = (LPDRAGINFO) PTR_SEG_TO_LIN(spDragInfo);
WND *ptrQueryWnd = WIN_FindWndPtr(hQueryWnd),*ptrWnd;
RECT tempRect;
if( !ptrQueryWnd || !ptrDragInfo )
{
WIN_ReleaseWndPtr(ptrQueryWnd);
return 0;
}
CONV_POINT16TO32( &ptrDragInfo->pt, &pt );
GetWindowRect(hQueryWnd,&tempRect);
if( !PtInRect(&tempRect,pt) ||
(ptrQueryWnd->dwStyle & WS_DISABLED) )
{
WIN_ReleaseWndPtr(ptrQueryWnd);
return 0;
}
if( !(ptrQueryWnd->dwStyle & WS_MINIMIZE) )
{
tempRect = ptrQueryWnd->rectClient;
if(ptrQueryWnd->dwStyle & WS_CHILD)
MapWindowPoints( ptrQueryWnd->parent->hwndSelf, 0,
(LPPOINT)&tempRect, 2 );
if (PtInRect( &tempRect, pt))
{
wParam = 0;
for (ptrWnd = WIN_LockWndPtr(ptrQueryWnd->child); ptrWnd ;WIN_UpdateWndPtr(&ptrWnd,ptrWnd->next))
{
if( ptrWnd->dwStyle & WS_VISIBLE )
{
GetWindowRect( ptrWnd->hwndSelf, &tempRect );
if (PtInRect( &tempRect, pt )) break;
}
}
if(ptrWnd)
{
TRACE_(msg)("hwnd = %04x, %d %d - %d %d\n",
ptrWnd->hwndSelf, ptrWnd->rectWindow.left, ptrWnd->rectWindow.top,
ptrWnd->rectWindow.right, ptrWnd->rectWindow.bottom );
if( !(ptrWnd->dwStyle & WS_DISABLED) )
bResult = DRAG_QueryUpdate(ptrWnd->hwndSelf, spDragInfo, bNoSend);
WIN_ReleaseWndPtr(ptrWnd);
}
if(bResult)
{
WIN_ReleaseWndPtr(ptrQueryWnd);
return bResult;
}
}
else wParam = 1;
}
else wParam = 1;
ScreenToClient16(hQueryWnd,&ptrDragInfo->pt);
ptrDragInfo->hScope = hQueryWnd;
bResult = ( bNoSend )
? ptrQueryWnd->dwExStyle & WS_EX_ACCEPTFILES
: SendMessage16( hQueryWnd ,WM_QUERYDROPOBJECT ,
(WPARAM16)wParam ,(LPARAM) spDragInfo );
if( !bResult )
CONV_POINT32TO16( &pt, &ptrDragInfo->pt );
WIN_ReleaseWndPtr(ptrQueryWnd);
return bResult;
}
/*******************************************************************
* DragDetect (USER.465)
*/
BOOL16 WINAPI DragDetect16( HWND16 hWnd, POINT16 pt )
{
POINT pt32;
CONV_POINT16TO32( &pt, &pt32 );
return DragDetect( hWnd, pt32 );
}
/*******************************************************************
* DragDetect32 (USER32.151)
*/
BOOL WINAPI DragDetect( HWND hWnd, POINT pt )
{
MSG16 msg;
RECT16 rect;
rect.left = pt.x - wDragWidth;
rect.right = pt.x + wDragWidth;
rect.top = pt.y - wDragHeight;
rect.bottom = pt.y + wDragHeight;
SetCapture(hWnd);
while(1)
{
while(PeekMessage16(&msg ,0 ,WM_MOUSEFIRST ,WM_MOUSELAST ,PM_REMOVE))
{
if( msg.message == WM_LBUTTONUP )
{
ReleaseCapture();
return 0;
}
if( msg.message == WM_MOUSEMOVE )
{
if( !PtInRect16( &rect, MAKEPOINT16(msg.lParam) ) )
{
ReleaseCapture();
return 1;
}
}
}
WaitMessage();
}
return 0;
}
/******************************************************************************
* DragObject16 (USER.464)
*/
DWORD WINAPI DragObject16( HWND16 hwndScope, HWND16 hWnd, UINT16 wObj,
HANDLE16 hOfStruct, WORD szList, HCURSOR16 hCursor )
{
MSG16 msg;
LPDRAGINFO lpDragInfo;
SEGPTR spDragInfo;
HCURSOR16 hDragCursor=0, hOldCursor=0, hBummer=0;
HGLOBAL16 hDragInfo = GlobalAlloc16( GMEM_SHARE | GMEM_ZEROINIT, 2*sizeof(DRAGINFO));
WND *wndPtr = WIN_FindWndPtr(hWnd);
HCURSOR16 hCurrentCursor = 0;
HWND16 hCurrentWnd = 0;
lpDragInfo = (LPDRAGINFO) GlobalLock16(hDragInfo);
spDragInfo = (SEGPTR) WIN16_GlobalLock16(hDragInfo);
if( !lpDragInfo || !spDragInfo )
{
WIN_ReleaseWndPtr(wndPtr);
return 0L;
}
hBummer = LoadCursor16(0, IDC_BUMMER16);
if( !hBummer || !wndPtr )
{
GlobalFree16(hDragInfo);
WIN_ReleaseWndPtr(wndPtr);
return 0L;
}
if(hCursor)
{
if( !(hDragCursor = CURSORICON_IconToCursor(hCursor, FALSE)) )
{
GlobalFree16(hDragInfo);
WIN_ReleaseWndPtr(wndPtr);
return 0L;
}
if( hDragCursor == hCursor ) hDragCursor = 0;
else hCursor = hDragCursor;
hOldCursor = SetCursor(hDragCursor);
}
lpDragInfo->hWnd = hWnd;
lpDragInfo->hScope = 0;
lpDragInfo->wFlags = wObj;
lpDragInfo->hList = szList; /* near pointer! */
lpDragInfo->hOfStruct = hOfStruct;
lpDragInfo->l = 0L;
SetCapture(hWnd);
ShowCursor( TRUE );
do
{
do{ WaitMessage(); }
while( !PeekMessage16(&msg,0,WM_MOUSEFIRST,WM_MOUSELAST,PM_REMOVE) );
*(lpDragInfo+1) = *lpDragInfo;
lpDragInfo->pt = msg.pt;
/* update DRAGINFO struct */
TRACE_(msg)("lpDI->hScope = %04x\n",lpDragInfo->hScope);
if( DRAG_QueryUpdate(hwndScope, spDragInfo, FALSE) > 0 )
hCurrentCursor = hCursor;
else
{
hCurrentCursor = hBummer;
lpDragInfo->hScope = 0;
}
if( hCurrentCursor )
SetCursor(hCurrentCursor);
/* send WM_DRAGLOOP */
SendMessage16( hWnd, WM_DRAGLOOP, (WPARAM16)(hCurrentCursor != hBummer),
(LPARAM) spDragInfo );
/* send WM_DRAGSELECT or WM_DRAGMOVE */
if( hCurrentWnd != lpDragInfo->hScope )
{
if( hCurrentWnd )
SendMessage16( hCurrentWnd, WM_DRAGSELECT, 0,
(LPARAM)MAKELONG(LOWORD(spDragInfo)+sizeof(DRAGINFO),
HIWORD(spDragInfo)) );
hCurrentWnd = lpDragInfo->hScope;
if( hCurrentWnd )
SendMessage16( hCurrentWnd, WM_DRAGSELECT, 1, (LPARAM)spDragInfo);
}
else
if( hCurrentWnd )
SendMessage16( hCurrentWnd, WM_DRAGMOVE, 0, (LPARAM)spDragInfo);
} while( msg.message != WM_LBUTTONUP && msg.message != WM_NCLBUTTONUP );
ReleaseCapture();
ShowCursor( FALSE );
if( hCursor )
{
SetCursor( hOldCursor );
if (hDragCursor) DestroyCursor( hDragCursor );
}
if( hCurrentCursor != hBummer )
msg.lParam = SendMessage16( lpDragInfo->hScope, WM_DROPOBJECT,
(WPARAM16)hWnd, (LPARAM)spDragInfo );
else
msg.lParam = 0;
GlobalFree16(hDragInfo);
WIN_ReleaseWndPtr(wndPtr);
return (DWORD)(msg.lParam);
}
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