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139a4b1874
wine/controls/scroll.c
Alexandre Julliard 139a4b1874 Release 961102 
Sat Nov  2 12:50:40 1996  Alexandre Julliard  <julliard@lrc.epfl.ch>

	* [files/dos_fs.c]
	Added long file name mask in DOSFS_FindNext().

	* [loader/pe_image.c] [loader/task.c]
	Moved Win32 task startup into TASK_CallToStart().

	* [objects/dc.c]
	Fixed SetDCState() for memory DC (thanks to Constantine
	Sapuntzakis for spotting this one).

	* [windows/winpos.c]
	Fixed WINPOS_ForceXWindowRaise() to preserve correct Z-order.

	* [*/*]
	Added Win32 version for many graphics functions.

Thu Oct 31 10:00:18 1996  Huw D. M. Davies <h.davies1@physics.oxford.ac.uk>

	* [controls/button.c]
	BUTTON_CheckAutoRadioButton() unchecks only auto radio buttons.

	* [controls/edit.c]
	EM_GETSEL result should have HIWORD(result) >= LOWORD(result); old
	EDIT_EM_GetSel() renamed to EDIT_GetSel(). 

	* [windows/dialog.c]
	DS_LOCALEDIT is a dialog style not an edit style.

	* [windows/winproc.c]
	Stop stack trashing when wndPtr->text == NULL.

Tue Oct 29 23:35:04 1996   Constantine P Sapuntzakis <csapuntz@mit.edu>

	* [windows/dce.c]
	GetDCEx32 - The determination of whether to use the DC cache or
 	not should be independent of DCX_USESTYLE.

Sat Oct 26 17:31:00 1996  Thomas Sandford <t.d.g.sandford@prds-grn.demon.co.uk>

	* [files/directory.c]
	Added errno.h to #includes

	* [tools/makedep.c]
	Close files once they have been processed.
1996-11-02 14:24:07 +00:00

1293 lines
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/*
* Scrollbar control
*
* Copyright 1993 Martin Ayotte
* Copyright 1994, 1996 Alexandre Julliard
*/
#define NO_TRANSITION_TYPES /* This file is Win32-clean */
#include <stdlib.h>
#include <stdio.h>
#include <sys/types.h>
#include <sys/stat.h>
#include "windows.h"
#include "syscolor.h"
#include "sysmetrics.h"
#include "scroll.h"
#include "graphics.h"
#include "heap.h"
#include "win.h"
#include "stddebug.h"
#include "debug.h"
static HBITMAP32 hUpArrow = 0;
static HBITMAP32 hDnArrow = 0;
static HBITMAP32 hLfArrow = 0;
static HBITMAP32 hRgArrow = 0;
static HBITMAP32 hUpArrowD = 0;
static HBITMAP32 hDnArrowD = 0;
static HBITMAP32 hLfArrowD = 0;
static HBITMAP32 hRgArrowD = 0;
static HBITMAP32 hUpArrowI = 0;
static HBITMAP32 hDnArrowI = 0;
static HBITMAP32 hLfArrowI = 0;
static HBITMAP32 hRgArrowI = 0;
#define TOP_ARROW(flags,pressed) \
(((flags)&ESB_DISABLE_UP) ? hUpArrowI : ((pressed) ? hUpArrowD:hUpArrow))
#define BOTTOM_ARROW(flags,pressed) \
(((flags)&ESB_DISABLE_DOWN) ? hDnArrowI : ((pressed) ? hDnArrowD:hDnArrow))
#define LEFT_ARROW(flags,pressed) \
(((flags)&ESB_DISABLE_LEFT) ? hLfArrowI : ((pressed) ? hLfArrowD:hLfArrow))
#define RIGHT_ARROW(flags,pressed) \
(((flags)&ESB_DISABLE_RIGHT) ? hRgArrowI : ((pressed) ? hRgArrowD:hRgArrow))
/* Minimum size of the rectangle between the arrows */
#define SCROLL_MIN_RECT 4
/* Minimum size of the thumb in pixels */
#define SCROLL_MIN_THUMB 4
/* Delay (in ms) before first repetition when holding the button down */
#define SCROLL_FIRST_DELAY 200
/* Delay (in ms) between scroll repetitions */
#define SCROLL_REPEAT_DELAY 100
/* Scroll timer id */
#define SCROLL_TIMER 0
/* Scroll-bar hit testing */
enum SCROLL_HITTEST
{
SCROLL_NOWHERE, /* Outside the scroll bar */
SCROLL_TOP_ARROW, /* Top or left arrow */
SCROLL_TOP_RECT, /* Rectangle between the top arrow and the thumb */
SCROLL_THUMB, /* Thumb rectangle */
SCROLL_BOTTOM_RECT, /* Rectangle between the thumb and the bottom arrow */
SCROLL_BOTTOM_ARROW /* Bottom or right arrow */
};
/* Thumb-tracking info */
static HWND32 SCROLL_TrackingWin = 0;
static INT32 SCROLL_TrackingBar = 0;
static INT32 SCROLL_TrackingPos = 0;
static INT32 SCROLL_TrackingVal = 0;
/* Is the moving thumb being displayed? */
static BOOL32 SCROLL_MovingThumb = FALSE;
/***********************************************************************
* SCROLL_LoadBitmaps
*/
static void SCROLL_LoadBitmaps(void)
{
hUpArrow = LoadBitmap16( 0, MAKEINTRESOURCE(OBM_UPARROW) );
hDnArrow = LoadBitmap16( 0, MAKEINTRESOURCE(OBM_DNARROW) );
hLfArrow = LoadBitmap16( 0, MAKEINTRESOURCE(OBM_LFARROW) );
hRgArrow = LoadBitmap16( 0, MAKEINTRESOURCE(OBM_RGARROW) );
hUpArrowD = LoadBitmap16( 0, MAKEINTRESOURCE(OBM_UPARROWD) );
hDnArrowD = LoadBitmap16( 0, MAKEINTRESOURCE(OBM_DNARROWD) );
hLfArrowD = LoadBitmap16( 0, MAKEINTRESOURCE(OBM_LFARROWD) );
hRgArrowD = LoadBitmap16( 0, MAKEINTRESOURCE(OBM_RGARROWD) );
hUpArrowI = LoadBitmap16( 0, MAKEINTRESOURCE(OBM_UPARROWI) );
hDnArrowI = LoadBitmap16( 0, MAKEINTRESOURCE(OBM_DNARROWI) );
hLfArrowI = LoadBitmap16( 0, MAKEINTRESOURCE(OBM_LFARROWI) );
hRgArrowI = LoadBitmap16( 0, MAKEINTRESOURCE(OBM_RGARROWI) );
}
/***********************************************************************
* SCROLL_GetPtrScrollInfo
*/
static SCROLLBAR_INFO *SCROLL_GetPtrScrollInfo( WND* wndPtr, INT32 nBar )
{
SCROLLBAR_INFO *infoPtr;
if (!wndPtr) return NULL;
switch(nBar)
{
case SB_HORZ: infoPtr = (SCROLLBAR_INFO *)wndPtr->pHScroll; break;
case SB_VERT: infoPtr = (SCROLLBAR_INFO *)wndPtr->pVScroll; break;
case SB_CTL: infoPtr = (SCROLLBAR_INFO *)wndPtr->wExtra; break;
default: return NULL;
}
if (!infoPtr) /* Create the info structure if needed */
{
if ((infoPtr = HeapAlloc( SystemHeap, 0, sizeof(SCROLLBAR_INFO) )))
{
infoPtr->MinVal = infoPtr->CurVal = infoPtr->Page = 0;
infoPtr->MaxVal = 100;
infoPtr->flags = ESB_ENABLE_BOTH;
if (nBar == SB_HORZ) wndPtr->pHScroll = infoPtr;
else wndPtr->pVScroll = infoPtr;
}
if (!hUpArrow) SCROLL_LoadBitmaps();
}
return infoPtr;
}
/***********************************************************************
* SCROLL_GetScrollInfo
*/
static SCROLLBAR_INFO *SCROLL_GetScrollInfo( HWND32 hwnd, INT32 nBar )
{
WND *wndPtr = WIN_FindWndPtr( hwnd );
return SCROLL_GetPtrScrollInfo( wndPtr, nBar );
}
/***********************************************************************
* SCROLL_GetScrollBarRect
*
* Compute the scroll bar rectangle, in drawing coordinates (i.e. client
* coords for SB_CTL, window coords for SB_VERT and SB_HORZ).
* 'arrowSize' returns the width or height of an arrow (depending on
* the orientation of the scrollbar), 'thumbSize' returns the size of
* the thumb, and 'thumbPos' returns the position of the thumb
* relative to the left or to the top.
* Return TRUE if the scrollbar is vertical, FALSE if horizontal.
*/
static BOOL32 SCROLL_GetScrollBarRect( HWND32 hwnd, INT32 nBar, RECT32 *lprect,
INT32 *arrowSize, INT32 *thumbSize,
INT32 *thumbPos )
{
INT32 pixels;
BOOL32 vertical;
WND *wndPtr = WIN_FindWndPtr( hwnd );
switch(nBar)
{
case SB_HORZ:
lprect->left = wndPtr->rectClient.left - wndPtr->rectWindow.left - 1;
lprect->top = wndPtr->rectClient.bottom - wndPtr->rectWindow.top;
lprect->right = wndPtr->rectClient.right - wndPtr->rectWindow.left +1;
lprect->bottom = lprect->top + SYSMETRICS_CYHSCROLL + 1;
vertical = FALSE;
break;
case SB_VERT:
lprect->left = wndPtr->rectClient.right - wndPtr->rectWindow.left;
lprect->top = wndPtr->rectClient.top - wndPtr->rectWindow.top - 1;
lprect->right = lprect->left + SYSMETRICS_CXVSCROLL + 1;
lprect->bottom = wndPtr->rectClient.bottom - wndPtr->rectWindow.top +1;
vertical = TRUE;
break;
case SB_CTL:
GetClientRect32( hwnd, lprect );
vertical = ((wndPtr->dwStyle & SBS_VERT) != 0);
break;
default:
return FALSE;
}
if (vertical) pixels = lprect->bottom - lprect->top;
else pixels = lprect->right - lprect->left;
if (pixels <= 2*SYSMETRICS_CXVSCROLL + SCROLL_MIN_RECT)
{
if (pixels > SCROLL_MIN_RECT)
*arrowSize = (pixels - SCROLL_MIN_RECT) / 2;
else
*arrowSize = 0;
*thumbPos = *thumbSize = 0;
}
else
{
SCROLLBAR_INFO *info = SCROLL_GetPtrScrollInfo( wndPtr, nBar );
*arrowSize = SYSMETRICS_CXVSCROLL;
pixels -= 2 * SYSMETRICS_CXVSCROLL;
if (info->Page)
{
*thumbSize = pixels * info->Page / (info->MaxVal-info->MinVal+1);
if (*thumbSize < SCROLL_MIN_THUMB) *thumbSize = SCROLL_MIN_THUMB;
}
else *thumbSize = SYSMETRICS_CXVSCROLL;
if (((pixels -= *thumbSize + 1) < 0) ||
((info->flags & ESB_DISABLE_BOTH) == ESB_DISABLE_BOTH))
{
/* Rectangle too small or scrollbar disabled -> no thumb */
*thumbPos = *thumbSize = 0;
}
else
{
INT32 max = info->MaxVal - MAX( info->Page-1, 0 );
if (info->MinVal >= max)
*thumbPos = *arrowSize;
else
*thumbPos = *arrowSize + pixels * (info->CurVal-info->MinVal) /
(max - info->MinVal);
}
}
return vertical;
}
/***********************************************************************
* SCROLL_GetThumbVal
*
* Compute the current scroll position based on the thumb position in pixels
* from the top of the scroll-bar.
*/
static UINT32 SCROLL_GetThumbVal( SCROLLBAR_INFO *infoPtr, RECT32 *rect,
BOOL32 vertical, INT32 pos )
{
INT32 thumbSize;
INT32 pixels = vertical ? rect->bottom-rect->top : rect->right-rect->left;
if ((pixels -= 2*SYSMETRICS_CXVSCROLL) <= 0) return infoPtr->MinVal;
if (infoPtr->Page)
{
thumbSize = pixels * infoPtr->Page/(infoPtr->MaxVal-infoPtr->MinVal+1);
if (thumbSize < SCROLL_MIN_THUMB) thumbSize = SCROLL_MIN_THUMB;
}
else thumbSize = SYSMETRICS_CXVSCROLL;
if ((pixels -= thumbSize + 1) <= 0) return infoPtr->MinVal;
pos = MAX( 0, pos - SYSMETRICS_CXVSCROLL );
if (pos > pixels) pos = pixels;
if (!infoPtr->Page) pos *= infoPtr->MaxVal - infoPtr->MinVal;
else pos *= infoPtr->MaxVal - infoPtr->MinVal - infoPtr->Page + 1;
return infoPtr->MinVal + ((pos + pixels / 2) / pixels);
}
/***********************************************************************
* SCROLL_HitTest
*
* Scroll-bar hit testing (don't confuse this with WM_NCHITTEST!).
*/
static enum SCROLL_HITTEST SCROLL_HitTest( HWND32 hwnd, INT32 nBar,
POINT32 pt )
{
INT32 arrowSize, thumbSize, thumbPos;
RECT32 rect;
BOOL32 vertical = SCROLL_GetScrollBarRect( hwnd, nBar, &rect,
&arrowSize, &thumbSize, &thumbPos );
if (!PtInRect32( &rect, pt )) return SCROLL_NOWHERE;
if (vertical)
{
if (pt.y <= rect.top + arrowSize + 1) return SCROLL_TOP_ARROW;
if (pt.y >= rect.bottom - arrowSize) return SCROLL_BOTTOM_ARROW;
if (!thumbPos) return SCROLL_TOP_RECT;
pt.y -= rect.top;
if (pt.y < thumbPos) return SCROLL_TOP_RECT;
if (pt.y > thumbPos + thumbSize) return SCROLL_BOTTOM_RECT;
return SCROLL_THUMB;
}
else /* horizontal */
{
if (pt.x <= rect.left + arrowSize) return SCROLL_TOP_ARROW;
if (pt.x >= rect.right - arrowSize) return SCROLL_BOTTOM_ARROW;
if (!thumbPos) return SCROLL_TOP_RECT;
pt.x -= rect.left;
if (pt.x < thumbPos) return SCROLL_TOP_RECT;
if (pt.x > thumbPos + thumbSize) return SCROLL_BOTTOM_RECT;
return SCROLL_THUMB;
}
}
/***********************************************************************
* SCROLL_DrawArrows
*
* Draw the scroll bar arrows.
*/
static void SCROLL_DrawArrows( HDC32 hdc, SCROLLBAR_INFO *infoPtr,
RECT32 *rect, INT32 arrowSize, BOOL32 vertical,
BOOL32 top_pressed, BOOL32 bottom_pressed )
{
HDC32 hdcMem = CreateCompatibleDC( hdc );
HBITMAP32 hbmpPrev = SelectObject32( hdcMem, vertical ?
TOP_ARROW(infoPtr->flags, top_pressed)
: LEFT_ARROW(infoPtr->flags, top_pressed));
SetStretchBltMode( hdc, STRETCH_DELETESCANS );
StretchBlt( hdc, rect->left, rect->top,
vertical ? rect->right-rect->left : arrowSize+1,
vertical ? arrowSize+1 : rect->bottom-rect->top,
hdcMem, 0, 0,
SYSMETRICS_CXVSCROLL + 1, SYSMETRICS_CYHSCROLL + 1,
SRCCOPY );
SelectObject32( hdcMem, vertical ?
BOTTOM_ARROW( infoPtr->flags, bottom_pressed )
: RIGHT_ARROW( infoPtr->flags, bottom_pressed ) );
if (vertical)
StretchBlt( hdc, rect->left, rect->bottom - arrowSize - 1,
rect->right - rect->left, arrowSize + 1,
hdcMem, 0, 0,
SYSMETRICS_CXVSCROLL + 1, SYSMETRICS_CYHSCROLL + 1,
SRCCOPY );
else
StretchBlt( hdc, rect->right - arrowSize - 1, rect->top,
arrowSize + 1, rect->bottom - rect->top,
hdcMem, 0, 0,
SYSMETRICS_CXVSCROLL + 1, SYSMETRICS_CYHSCROLL + 1,
SRCCOPY );
SelectObject32( hdcMem, hbmpPrev );
DeleteDC( hdcMem );
}
/***********************************************************************
* SCROLL_DrawMovingThumb
*
* Draw the moving thumb rectangle.
*/
static void SCROLL_DrawMovingThumb( HDC32 hdc, RECT32 *rect, BOOL32 vertical,
INT32 arrowSize, INT32 thumbSize )
{
RECT32 r = *rect;
if (vertical)
{
r.top += SCROLL_TrackingPos;
if (r.top < rect->top + arrowSize) r.top = rect->top + arrowSize;
if (r.top + thumbSize >= rect->bottom - arrowSize)
r.top = rect->bottom - arrowSize - thumbSize - 1;
r.bottom = r.top + thumbSize + 1;
}
else
{
r.left += SCROLL_TrackingPos;
if (r.left < rect->left + arrowSize) r.left = rect->left + arrowSize;
if (r.left + thumbSize >= rect->right - arrowSize)
r.left = rect->right - arrowSize - thumbSize - 1;
r.right = r.left + thumbSize + 1;
}
InflateRect32( &r, -1, -1 );
DrawFocusRect32( hdc, &r );
SCROLL_MovingThumb = !SCROLL_MovingThumb;
}
/***********************************************************************
* SCROLL_DrawInterior
*
* Draw the scroll bar interior (everything except the arrows).
*/
static void SCROLL_DrawInterior( HWND32 hwnd, HDC32 hdc, INT32 nBar,
RECT32 *rect, INT32 arrowSize,
INT32 thumbSize, INT32 thumbPos,
UINT32 flags, BOOL32 vertical,
BOOL32 top_selected, BOOL32 bottom_selected )
{
RECT32 r;
/* Select the correct brush and pen */
SelectObject32( hdc, sysColorObjects.hpenWindowFrame );
if ((flags & ESB_DISABLE_BOTH) == ESB_DISABLE_BOTH)
{
/* This ought to be the color of the parent window */
SelectObject32( hdc, sysColorObjects.hbrushWindow );
}
else
{
if (nBar == SB_CTL) /* Only scrollbar controls send WM_CTLCOLOR */
{
HBRUSH32 hbrush = SendMessage32A(GetParent32(hwnd),
WM_CTLCOLORSCROLLBAR, hdc, hwnd );
SelectObject32( hdc, hbrush );
}
else SelectObject32( hdc, sysColorObjects.hbrushScrollbar );
}
/* Calculate the scroll rectangle */
r = *rect;
if (vertical)
{
r.top += arrowSize;
r.bottom -= arrowSize;
}
else
{
r.left += arrowSize;
r.right -= arrowSize;
}
/* Draw the scroll bar frame */
MoveTo( hdc, r.left, r.top );
LineTo32( hdc, r.right-1, r.top );
LineTo32( hdc, r.right-1, r.bottom-1 );
LineTo32( hdc, r.left, r.bottom-1 );
LineTo32( hdc, r.left, r.top );
/* Draw the scroll rectangles and thumb */
if (!thumbPos) /* No thumb to draw */
{
PatBlt( hdc, r.left+1, r.top+1, r.right - r.left - 2,
r.bottom - r.top - 2, PATCOPY );
return;
}
if (vertical)
{
PatBlt( hdc, r.left + 1, r.top + 1,
r.right - r.left - 2,
thumbPos - arrowSize,
top_selected ? 0x0f0000 : PATCOPY );
r.top += thumbPos - arrowSize;
PatBlt( hdc, r.left + 1, r.top + thumbSize + 1,
r.right - r.left - 2,
r.bottom - r.top - thumbSize - 2,
bottom_selected ? 0x0f0000 : PATCOPY );
r.bottom = r.top + thumbSize + 1;
}
else /* horizontal */
{
PatBlt( hdc, r.left + 1, r.top + 1,
thumbPos - arrowSize,
r.bottom - r.top - 2,
top_selected ? 0x0f0000 : PATCOPY );
r.left += thumbPos - arrowSize;
PatBlt( hdc, r.left + thumbSize + 1, r.top + 1,
r.right - r.left - thumbSize - 2,
r.bottom - r.top - 2,
bottom_selected ? 0x0f0000 : PATCOPY );
r.right = r.left + thumbSize + 1;
}
/* Draw the thumb */
SelectObject32( hdc, sysColorObjects.hbrushBtnFace );
Rectangle32( hdc, r.left, r.top, r.right, r.bottom );
InflateRect32( &r, -1, -1 );
GRAPH_DrawReliefRect( hdc, &r, 1, 2, FALSE );
if (SCROLL_MovingThumb &&
(SCROLL_TrackingWin == hwnd) &&
(SCROLL_TrackingBar == nBar))
{
SCROLL_DrawMovingThumb( hdc, rect, vertical, arrowSize, thumbSize );
SCROLL_MovingThumb = TRUE;
}
}
/***********************************************************************
* SCROLL_DrawScrollBar
*
* Redraw the whole scrollbar.
*/
void SCROLL_DrawScrollBar( HWND32 hwnd, HDC32 hdc, INT32 nBar, BOOL32 arrows )
{
INT32 arrowSize, thumbSize, thumbPos;
RECT32 rect;
BOOL32 vertical;
WND *wndPtr = WIN_FindWndPtr( hwnd );
SCROLLBAR_INFO *infoPtr = SCROLL_GetPtrScrollInfo( wndPtr, nBar );
if (!wndPtr || !infoPtr ||
((nBar == SB_VERT) && !(wndPtr->dwStyle & WS_VSCROLL)) ||
((nBar == SB_HORZ) && !(wndPtr->dwStyle & WS_HSCROLL))) return;
vertical = SCROLL_GetScrollBarRect( hwnd, nBar, &rect,
&arrowSize, &thumbSize, &thumbPos );
/* Draw the arrows */
if (arrows && arrowSize) SCROLL_DrawArrows( hdc, infoPtr, &rect, arrowSize,
vertical, FALSE, FALSE );
SCROLL_DrawInterior( hwnd, hdc, nBar, &rect, arrowSize, thumbSize,
thumbPos, infoPtr->flags, vertical, FALSE, FALSE );
}
/***********************************************************************
* SCROLL_RefreshScrollBar
*
* Repaint the scroll bar interior after a SetScrollRange() or
* SetScrollPos() call.
*/
static void SCROLL_RefreshScrollBar( HWND32 hwnd, INT32 nBar, BOOL32 arrows )
{
HDC32 hdc = GetDCEx32( hwnd, 0,
DCX_CACHE | ((nBar == SB_CTL) ? 0 : DCX_WINDOW) );
if (!hdc) return;
SCROLL_DrawScrollBar( hwnd, hdc, nBar, arrows );
ReleaseDC32( hwnd, hdc );
}
/***********************************************************************
* SCROLL_HandleKbdEvent
*
* Handle a keyboard event (only for SB_CTL scrollbars).
*/
static void SCROLL_HandleKbdEvent( HWND32 hwnd, WPARAM32 wParam )
{
WND *wndPtr = WIN_FindWndPtr( hwnd );
WPARAM32 msg;
switch(wParam)
{
case VK_PRIOR: msg = SB_PAGEUP; break;
case VK_NEXT: msg = SB_PAGEDOWN; break;
case VK_HOME: msg = SB_TOP; break;
case VK_END: msg = SB_BOTTOM; break;
case VK_UP: msg = SB_LINEUP; break;
case VK_DOWN: msg = SB_LINEDOWN; break;
default:
return;
}
SendMessage32A( GetParent32(hwnd),
(wndPtr->dwStyle & SBS_VERT) ? WM_VSCROLL : WM_HSCROLL,
msg, hwnd );
}
/***********************************************************************
* SCROLL_HandleScrollEvent
*
* Handle a mouse or timer event for the scrollbar.
* 'pt' is the location of the mouse event in client (for SB_CTL) or
* windows coordinates.
*/
void SCROLL_HandleScrollEvent( HWND32 hwnd, INT32 nBar, UINT32 msg, POINT32 pt)
{
/* Previous mouse position for timer events */
static POINT32 prevPt;
/* Hit test code of the last button-down event */
static enum SCROLL_HITTEST trackHitTest;
/* Thumb position when tracking started. */
static UINT32 trackThumbPos;
/* Position in the scroll-bar of the last button-down event. */
static INT32 lastClickPos;
/* Position in the scroll-bar of the last mouse event. */
static INT32 lastMousePos;
enum SCROLL_HITTEST hittest;
HWND32 hwndOwner, hwndCtl;
BOOL32 vertical;
INT32 arrowSize, thumbSize, thumbPos;
RECT32 rect;
HDC32 hdc;
SCROLLBAR_INFO *infoPtr = SCROLL_GetScrollInfo( hwnd, nBar );
if (!infoPtr) return;
if ((trackHitTest == SCROLL_NOWHERE) && (msg != WM_LBUTTONDOWN)) return;
hdc = GetDCEx32( hwnd, 0, DCX_CACHE | ((nBar == SB_CTL) ? 0 : DCX_WINDOW));
vertical = SCROLL_GetScrollBarRect( hwnd, nBar, &rect,
&arrowSize, &thumbSize, &thumbPos );
hwndOwner = (nBar == SB_CTL) ? GetParent32(hwnd) : hwnd;
hwndCtl = (nBar == SB_CTL) ? hwnd : 0;
switch(msg)
{
case WM_LBUTTONDOWN: /* Initialise mouse tracking */
trackHitTest = hittest = SCROLL_HitTest( hwnd, nBar, pt );
lastClickPos = vertical ? (pt.y - rect.top) : (pt.x - rect.left);
lastMousePos = lastClickPos;
trackThumbPos = thumbPos;
prevPt = pt;
SetCapture32( hwnd );
if (nBar == SB_CTL) SetFocus32( hwnd );
break;
case WM_MOUSEMOVE:
hittest = SCROLL_HitTest( hwnd, nBar, pt );
prevPt = pt;
break;
case WM_LBUTTONUP:
hittest = SCROLL_NOWHERE;
ReleaseCapture();
break;
case WM_SYSTIMER:
pt = prevPt;
hittest = SCROLL_HitTest( hwnd, nBar, pt );
break;
default:
return; /* Should never happen */
}
dprintf_scroll( stddeb, "ScrollBar Event: hwnd=%04x bar=%d msg=%x pt=%d,%d hit=%d\n",
hwnd, nBar, msg, pt.x, pt.y, hittest );
switch(trackHitTest)
{
case SCROLL_NOWHERE: /* No tracking in progress */
break;
case SCROLL_TOP_ARROW:
SCROLL_DrawArrows( hdc, infoPtr, &rect, arrowSize, vertical,
(hittest == trackHitTest), FALSE );
if (hittest == trackHitTest)
{
if ((msg == WM_LBUTTONDOWN) || (msg == WM_SYSTIMER))
{
SendMessage32A( hwndOwner, vertical ? WM_VSCROLL : WM_HSCROLL,
SB_LINEUP, hwndCtl );
SetSystemTimer32( hwnd, SCROLL_TIMER, (msg == WM_LBUTTONDOWN) ?
SCROLL_FIRST_DELAY : SCROLL_REPEAT_DELAY,
(TIMERPROC32)0 );
}
}
else KillSystemTimer32( hwnd, SCROLL_TIMER );
break;
case SCROLL_TOP_RECT:
SCROLL_DrawInterior( hwnd, hdc, nBar, &rect, arrowSize, thumbSize,
thumbPos, infoPtr->flags, vertical,
(hittest == trackHitTest), FALSE );
if (hittest == trackHitTest)
{
if ((msg == WM_LBUTTONDOWN) || (msg == WM_SYSTIMER))
{
SendMessage32A( hwndOwner, vertical ? WM_VSCROLL : WM_HSCROLL,
SB_PAGEUP, hwndCtl );
SetSystemTimer32( hwnd, SCROLL_TIMER, (msg == WM_LBUTTONDOWN) ?
SCROLL_FIRST_DELAY : SCROLL_REPEAT_DELAY,
(TIMERPROC32)0 );
}
}
else KillSystemTimer32( hwnd, SCROLL_TIMER );
break;
case SCROLL_THUMB:
if (msg == WM_LBUTTONDOWN)
{
SCROLL_TrackingWin = hwnd;
SCROLL_TrackingBar = nBar;
SCROLL_TrackingPos = trackThumbPos + lastMousePos - lastClickPos;
SCROLL_DrawMovingThumb(hdc, &rect, vertical, arrowSize, thumbSize);
}
else if (msg == WM_LBUTTONUP)
{
SCROLL_TrackingWin = 0;
SCROLL_MovingThumb = FALSE;
SCROLL_DrawInterior( hwnd, hdc, nBar, &rect, arrowSize, thumbSize,
thumbPos, infoPtr->flags, vertical,
FALSE, FALSE );
}
else /* WM_MOUSEMOVE */
{
UINT32 pos;
if (!PtInRect32( &rect, pt )) pos = lastClickPos;
else pos = vertical ? (pt.y - rect.top) : (pt.x - rect.left);
if (pos != lastMousePos)
{
SCROLL_DrawMovingThumb( hdc, &rect, vertical,
arrowSize, thumbSize );
lastMousePos = pos;
SCROLL_TrackingPos = trackThumbPos + pos - lastClickPos;
SCROLL_TrackingVal = SCROLL_GetThumbVal( infoPtr, &rect,
vertical,
SCROLL_TrackingPos );
SendMessage32A( hwndOwner, vertical ? WM_VSCROLL : WM_HSCROLL,
MAKEWPARAM( SB_THUMBTRACK, SCROLL_TrackingVal),
hwndCtl );
SCROLL_DrawMovingThumb( hdc, &rect, vertical,
arrowSize, thumbSize );
}
}
break;
case SCROLL_BOTTOM_RECT:
SCROLL_DrawInterior( hwnd, hdc, nBar, &rect, arrowSize, thumbSize,
thumbPos, infoPtr->flags, vertical,
FALSE, (hittest == trackHitTest) );
if (hittest == trackHitTest)
{
if ((msg == WM_LBUTTONDOWN) || (msg == WM_SYSTIMER))
{
SendMessage32A( hwndOwner, vertical ? WM_VSCROLL : WM_HSCROLL,
SB_PAGEDOWN, hwndCtl );
SetSystemTimer32( hwnd, SCROLL_TIMER, (msg == WM_LBUTTONDOWN) ?
SCROLL_FIRST_DELAY : SCROLL_REPEAT_DELAY,
(TIMERPROC32)0 );
}
}
else KillSystemTimer32( hwnd, SCROLL_TIMER );
break;
case SCROLL_BOTTOM_ARROW:
SCROLL_DrawArrows( hdc, infoPtr, &rect, arrowSize, vertical,
FALSE, (hittest == trackHitTest) );
if (hittest == trackHitTest)
{
if ((msg == WM_LBUTTONDOWN) || (msg == WM_SYSTIMER))
{
SendMessage32A( hwndOwner, vertical ? WM_VSCROLL : WM_HSCROLL,
SB_LINEDOWN, hwndCtl );
SetSystemTimer32( hwnd, SCROLL_TIMER, (msg == WM_LBUTTONDOWN) ?
SCROLL_FIRST_DELAY : SCROLL_REPEAT_DELAY,
(TIMERPROC32)0 );
}
}
else KillSystemTimer32( hwnd, SCROLL_TIMER );
break;
}
if (msg == WM_LBUTTONUP)
{
if (trackHitTest == SCROLL_THUMB)
{
UINT32 val = SCROLL_GetThumbVal( infoPtr, &rect, vertical,
trackThumbPos + lastMousePos - lastClickPos );
SendMessage32A( hwndOwner, vertical ? WM_VSCROLL : WM_HSCROLL,
MAKEWPARAM( SB_THUMBPOSITION, val ), hwndCtl );
}
else
SendMessage32A( hwndOwner, vertical ? WM_VSCROLL : WM_HSCROLL,
SB_ENDSCROLL, hwndCtl );
trackHitTest = SCROLL_NOWHERE; /* Terminate tracking */
}
ReleaseDC32( hwnd, hdc );
}
/***********************************************************************
* ScrollBarWndProc
*/
LRESULT ScrollBarWndProc( HWND32 hwnd, UINT32 message, WPARAM32 wParam,
LPARAM lParam )
{
switch(message)
{
case WM_CREATE:
{
CREATESTRUCT32A *lpCreat = (CREATESTRUCT32A *)lParam;
if (lpCreat->style & SBS_SIZEBOX)
{
fprintf( stdnimp, "Unimplemented style SBS_SIZEBOX.\n" );
return 0; /* FIXME */
}
if (lpCreat->style & SBS_VERT)
{
if (lpCreat->style & SBS_LEFTALIGN)
MoveWindow( hwnd, lpCreat->x, lpCreat->y,
SYSMETRICS_CXVSCROLL+1, lpCreat->cy, FALSE );
else if (lpCreat->style & SBS_RIGHTALIGN)
MoveWindow( hwnd,
lpCreat->x+lpCreat->cx-SYSMETRICS_CXVSCROLL-1,
lpCreat->y,
SYSMETRICS_CXVSCROLL + 1, lpCreat->cy, FALSE );
}
else /* SBS_HORZ */
{
if (lpCreat->style & SBS_TOPALIGN)
MoveWindow( hwnd, lpCreat->x, lpCreat->y,
lpCreat->cx, SYSMETRICS_CYHSCROLL+1, FALSE );
else if (lpCreat->style & SBS_BOTTOMALIGN)
MoveWindow( hwnd,
lpCreat->x,
lpCreat->y+lpCreat->cy-SYSMETRICS_CYHSCROLL-1,
lpCreat->cx, SYSMETRICS_CYHSCROLL+1, FALSE );
}
}
if (!hUpArrow) SCROLL_LoadBitmaps();
dprintf_scroll( stddeb, "ScrollBar creation, hwnd=%04x\n", hwnd );
return 0;
case WM_LBUTTONDOWN:
case WM_LBUTTONUP:
case WM_MOUSEMOVE:
case WM_SYSTIMER:
{
POINT32 pt;
CONV_POINT16TO32( (POINT16 *)&lParam, &pt );
SCROLL_HandleScrollEvent( hwnd, SB_CTL, message, pt );
}
break;
case WM_KEYDOWN:
SCROLL_HandleKbdEvent( hwnd, wParam );
break;
case WM_ERASEBKGND:
return 1;
case WM_GETDLGCODE:
return DLGC_WANTARROWS; /* Windows returns this value */
case WM_PAINT:
{
PAINTSTRUCT32 ps;
HDC32 hdc = BeginPaint32( hwnd, &ps );
SCROLL_DrawScrollBar( hwnd, hdc, SB_CTL, TRUE );
EndPaint32( hwnd, &ps );
}
break;
case SBM_SETPOS16:
case SBM_SETPOS32:
return SetScrollPos32( hwnd, SB_CTL, wParam, (BOOL32)lParam );
case SBM_GETPOS16:
case SBM_GETPOS32:
return GetScrollPos32( hwnd, SB_CTL );
case SBM_SETRANGE16:
SetScrollRange32( hwnd, SB_CTL, LOWORD(lParam), HIWORD(lParam),
wParam /* FIXME: Is this correct? */ );
return 0;
case SBM_SETRANGE32:
SetScrollRange32( hwnd, SB_CTL, wParam, lParam, FALSE );
return 0; /* FIXME: return previous position */
case SBM_GETRANGE16:
/* FIXME */
fprintf( stderr, "ScrollBar: don't know how to handle SBM_GETRANGE16 (wp=%04x,lp=%08lx)\n",
wParam, lParam );
return 0;
case SBM_GETRANGE32:
GetScrollRange32( hwnd, SB_CTL, (LPINT32)wParam, (LPINT32)lParam );
return 0;
case SBM_ENABLE_ARROWS16:
case SBM_ENABLE_ARROWS32:
return EnableScrollBar32( hwnd, SB_CTL, wParam );
case SBM_SETRANGEREDRAW32:
SetScrollRange32( hwnd, SB_CTL, wParam, lParam, TRUE );
return 0; /* FIXME: return previous position */
case SBM_SETSCROLLINFO32:
return SetScrollInfo32( hwnd, SB_CTL, (SCROLLINFO *)lParam, wParam );
case SBM_GETSCROLLINFO32:
return GetScrollInfo32( hwnd, SB_CTL, (SCROLLINFO *)lParam );
case 0x00e5:
case 0x00e7:
case 0x00e8:
case 0x00eb:
case 0x00ec:
case 0x00ed:
case 0x00ee:
case 0x00ef:
fprintf(stderr, "ScrollBar: unknown Win32 msg %04x wp=%08x lp=%08lx\n",
message, wParam, lParam );
break;
default:
if (message >= WM_USER)
fprintf( stderr, "ScrollBar: unknown msg %04x wp=%04x lp=%08lx\n",
message, wParam, lParam );
return DefWindowProc32A( hwnd, message, wParam, lParam );
}
return 0;
}
/*************************************************************************
* SetScrollInfo16 (USER.475)
*/
INT16 SetScrollInfo16( HWND16 hwnd, INT16 nBar, const SCROLLINFO *info,
BOOL16 bRedraw )
{
return (INT16)SetScrollInfo32( hwnd, nBar, info, bRedraw );
}
/*************************************************************************
* SetScrollInfo32 (USER32.500)
*/
INT32 SetScrollInfo32( HWND32 hwnd, INT32 nBar, const SCROLLINFO *info,
BOOL32 bRedraw )
{
SCROLLBAR_INFO *infoPtr;
UINT32 new_flags;
BOOL32 repaint_arrows = FALSE;
if (!(infoPtr = SCROLL_GetScrollInfo(hwnd, nBar))) return 0;
if (info->fMask & ~(SIF_ALL | SIF_DISABLENOSCROLL)) return 0;
if ((info->cbSize != sizeof(*info)) &&
(info->cbSize != sizeof(*info)-sizeof(info->nTrackPos))) return 0;
dprintf_scroll( stddeb, "SetScrollInfo: hwnd=%04x bar=%d", hwnd, nBar );
/* Set the page size */
if (info->fMask & SIF_PAGE)
{
dprintf_scroll( stddeb, " page=%d", info->nPage );
infoPtr->Page = info->nPage;
}
/* Set the scroll pos */
if (info->fMask & SIF_POS)
{
dprintf_scroll( stddeb, " pos=%d", info->nPos );
infoPtr->CurVal = info->nPos;
}
/* Set the scroll range */
if (info->fMask & SIF_RANGE)
{
dprintf_scroll( stddeb, " min=%d max=%d", info->nMin, info->nMax );
/* Invalid range -> range is set to (0,0) */
if ((info->nMin > info->nMax) ||
((UINT32)(info->nMax - info->nMin) >= 0x80000000))
{
infoPtr->MinVal = 0;
infoPtr->MaxVal = 0;
}
else
{
infoPtr->MinVal = info->nMin;
infoPtr->MaxVal = info->nMax;
}
}
/* Make sure the page size is valid */
if (infoPtr->Page < 0) infoPtr->Page = 0;
else if (infoPtr->Page > infoPtr->MaxVal - infoPtr->MinVal + 1 )
infoPtr->Page = infoPtr->MaxVal - infoPtr->MinVal + 1;
/* Make sure the pos is inside the range */
if (infoPtr->CurVal < infoPtr->MinVal)
infoPtr->CurVal = infoPtr->MinVal;
else if (infoPtr->CurVal > infoPtr->MaxVal - MAX( infoPtr->Page-1, 0 ))
infoPtr->CurVal = infoPtr->MaxVal - MAX( infoPtr->Page-1, 0 );
dprintf_scroll( stddeb, "\n new values: page=%d pos=%d min=%d max=%d\n",
infoPtr->Page, infoPtr->CurVal,
infoPtr->MinVal, infoPtr->MaxVal );
/* Check if the scrollbar should be hidden or disabled */
new_flags = infoPtr->flags;
if (infoPtr->MinVal >= infoPtr->MaxVal - MAX( infoPtr->Page-1, 0 ))
{
/* Hide or disable scroll-bar */
if (info->fMask & SIF_DISABLENOSCROLL) new_flags = ESB_DISABLE_BOTH;
else if (nBar != SB_CTL)
{
ShowScrollBar32( hwnd, nBar, FALSE );
bRedraw = FALSE; /* No need to repaint anything */
}
}
else /* Show and enable scroll-bar */
{
new_flags = 0;
if (nBar != SB_CTL) ShowScrollBar32( hwnd, nBar, TRUE );
}
if (infoPtr->flags != new_flags)
{
infoPtr->flags = new_flags;
repaint_arrows = TRUE;
}
if (bRedraw || repaint_arrows)
SCROLL_RefreshScrollBar( hwnd, nBar, repaint_arrows );
/* Return current position */
return infoPtr->CurVal;
}
/*************************************************************************
* GetScrollInfo16 (USER.476)
*/
BOOL16 GetScrollInfo16( HWND16 hwnd, INT16 nBar, LPSCROLLINFO info )
{
return GetScrollInfo32( hwnd, nBar, info );
}
/*************************************************************************
* GetScrollInfo32 (USER32.283)
*/
BOOL32 GetScrollInfo32( HWND32 hwnd, INT32 nBar, LPSCROLLINFO info )
{
SCROLLBAR_INFO *infoPtr;
if (!(infoPtr = SCROLL_GetScrollInfo( hwnd, nBar ))) return FALSE;
if (info->fMask & ~(SIF_ALL | SIF_DISABLENOSCROLL)) return FALSE;
if ((info->cbSize != sizeof(*info)) &&
(info->cbSize != sizeof(*info)-sizeof(info->nTrackPos))) return FALSE;
if (info->fMask & SIF_PAGE) info->nPage = infoPtr->Page;
if (info->fMask & SIF_POS) info->nPos = infoPtr->CurVal;
if ((info->fMask & SIF_TRACKPOS) && (info->cbSize == sizeof(*info)))
info->nTrackPos = (SCROLL_TrackingWin==hwnd) ? SCROLL_TrackingVal : 0;
if (info->fMask & SIF_RANGE)
{
info->nMin = infoPtr->MinVal;
info->nMax = infoPtr->MaxVal;
}
return (info->fMask & SIF_ALL) != 0;
}
/*************************************************************************
* SetScrollPos16 (USER.62)
*/
INT16 SetScrollPos16( HWND16 hwnd, INT16 nBar, INT16 nPos, BOOL16 bRedraw )
{
return (INT16)SetScrollPos32( hwnd, nBar, nPos, bRedraw );
}
/*************************************************************************
* SetScrollPos32 (USER32.501)
*/
INT32 SetScrollPos32( HWND32 hwnd, INT32 nBar, INT32 nPos, BOOL32 bRedraw )
{
SCROLLINFO info;
SCROLLBAR_INFO *infoPtr;
INT32 oldPos;
if (!(infoPtr = SCROLL_GetScrollInfo( hwnd, nBar ))) return 0;
oldPos = infoPtr->CurVal;
info.cbSize = sizeof(info);
info.nPos = nPos;
info.fMask = SIF_POS;
SetScrollInfo32( hwnd, nBar, &info, bRedraw );
return oldPos;
}
/*************************************************************************
* GetScrollPos16 (USER.63)
*/
INT16 GetScrollPos16( HWND16 hwnd, INT16 nBar )
{
return (INT16)GetScrollPos32( hwnd, nBar );
}
/*************************************************************************
* GetScrollPos32 (USER32.284)
*/
INT32 GetScrollPos32( HWND32 hwnd, INT32 nBar )
{
SCROLLBAR_INFO *infoPtr;
if (!(infoPtr = SCROLL_GetScrollInfo( hwnd, nBar ))) return 0;
return infoPtr->CurVal;
}
/*************************************************************************
* SetScrollRange16 (USER.64)
*/
void SetScrollRange16( HWND16 hwnd, INT16 nBar, INT16 MinVal, INT16 MaxVal,
BOOL16 bRedraw )
{
/* Invalid range -> range is set to (0,0) */
if ((INT32)MaxVal - (INT32)MinVal > 0x7fff) MinVal = MaxVal = 0;
SetScrollRange32( hwnd, nBar, MinVal, MaxVal, bRedraw );
}
/*************************************************************************
* SetScrollRange32 (USER32.502)
*/
BOOL32 SetScrollRange32( HWND32 hwnd, INT32 nBar, INT32 MinVal, INT32 MaxVal,
BOOL32 bRedraw )
{
SCROLLINFO info;
info.cbSize = sizeof(info);
info.nMin = MinVal;
info.nMax = MaxVal;
info.fMask = SIF_RANGE;
SetScrollInfo32( hwnd, nBar, &info, bRedraw );
return TRUE;
}
/*************************************************************************
* SCROLL_SetNCSbState
*
* This is for CalcChildScroll in windows/mdi.c
*/
DWORD SCROLL_SetNCSbState(WND* wndPtr, int vMin, int vMax, int vPos,
int hMin, int hMax, int hPos)
{
SCROLLBAR_INFO *infoPtr = SCROLL_GetPtrScrollInfo(wndPtr, SB_VERT);
wndPtr->dwStyle |= (WS_VSCROLL | WS_HSCROLL);
if( vMin >= vMax )
{ vMin = vMax;
wndPtr->dwStyle &= ~WS_VSCROLL; }
if( vPos > vMax ) vPos = vMax; else if( vPos < vMin ) vPos = vMin;
infoPtr->MinVal = vMin;
infoPtr->MaxVal = vMax;
infoPtr->CurVal = vPos;
infoPtr = SCROLL_GetPtrScrollInfo(wndPtr, SB_HORZ);
if( hMin >= hMax )
{ hMin = hMax;
wndPtr->dwStyle &= ~WS_HSCROLL; }
if( hPos > hMax ) hPos = hMax; else if( hPos < hMin ) hPos = hMin;
infoPtr->MinVal = hMin;
infoPtr->MaxVal = hMax;
infoPtr->CurVal = hPos;
return wndPtr->dwStyle & (WS_VSCROLL | WS_HSCROLL);
}
/*************************************************************************
* GetScrollRange16 (USER.65)
*/
BOOL16 GetScrollRange16( HWND16 hwnd, INT16 nBar, LPINT16 lpMin, LPINT16 lpMax)
{
INT32 min, max;
BOOL16 ret = GetScrollRange32( hwnd, nBar, &min, &max );
if (lpMin) *lpMin = min;
if (lpMax) *lpMax = max;
return ret;
}
/*************************************************************************
* GetScrollRange32 (USER32.285)
*/
BOOL32 GetScrollRange32( HWND32 hwnd, INT32 nBar, LPINT32 lpMin, LPINT32 lpMax)
{
SCROLLBAR_INFO *infoPtr;
if (!(infoPtr = SCROLL_GetScrollInfo( hwnd, nBar )))
{
if (lpMin) lpMin = 0;
if (lpMax) lpMax = 0;
return FALSE;
}
if (lpMin) *lpMin = infoPtr->MinVal;
if (lpMax) *lpMax = infoPtr->MaxVal;
return TRUE;
}
/*************************************************************************
* ShowScrollBar16 (USER.267)
*/
void ShowScrollBar16( HWND16 hwnd, INT16 nBar, BOOL16 fShow )
{
ShowScrollBar32( hwnd, nBar, fShow );
}
/*************************************************************************
* ShowScrollBar32 (USER32.531)
*/
BOOL32 ShowScrollBar32( HWND32 hwnd, INT32 nBar, BOOL32 fShow )
{
WND *wndPtr = WIN_FindWndPtr( hwnd );
if (!wndPtr) return FALSE;
dprintf_scroll( stddeb, "ShowScrollBar: hwnd=%04x bar=%d on=%d\n",
hwnd, nBar, fShow );
switch(nBar)
{
case SB_CTL:
ShowWindow( hwnd, fShow ? SW_SHOW : SW_HIDE );
return TRUE;
case SB_HORZ:
if (fShow)
{
if (wndPtr->dwStyle & WS_HSCROLL) return TRUE;
wndPtr->dwStyle |= WS_HSCROLL;
}
else /* hide it */
{
if (!(wndPtr->dwStyle & WS_HSCROLL)) return TRUE;
wndPtr->dwStyle &= ~WS_HSCROLL;
}
break;
case SB_VERT:
if (fShow)
{
if (wndPtr->dwStyle & WS_VSCROLL) return TRUE;
wndPtr->dwStyle |= WS_VSCROLL;
}
else /* hide it */
{
if (!(wndPtr->dwStyle & WS_VSCROLL)) return TRUE;
wndPtr->dwStyle &= ~WS_VSCROLL;
}
break;
case SB_BOTH:
if (fShow)
{
if ((wndPtr->dwStyle & WS_HSCROLL)
&& (wndPtr->dwStyle & WS_VSCROLL)) return TRUE;
wndPtr->dwStyle |= WS_HSCROLL | WS_VSCROLL;
}
else /* hide it */
{
if (!(wndPtr->dwStyle & WS_HSCROLL)
&& !(wndPtr->dwStyle & WS_VSCROLL)) return TRUE;
wndPtr->dwStyle &= ~(WS_HSCROLL | WS_VSCROLL);
}
break;
default:
return TRUE; /* Nothing to do! */
}
SetWindowPos( hwnd, 0, 0, 0, 0, 0, SWP_NOSIZE | SWP_NOMOVE
| SWP_NOACTIVATE | SWP_NOZORDER | SWP_FRAMECHANGED );
return TRUE;
}
/*************************************************************************
* EnableScrollBar16 (USER.482)
*/
BOOL16 EnableScrollBar16( HWND16 hwnd, INT16 nBar, UINT16 flags )
{
return EnableScrollBar32( hwnd, nBar, flags );
}
/*************************************************************************
* EnableScrollBar32 (USER32.170)
*/
BOOL32 EnableScrollBar32( HWND32 hwnd, INT32 nBar, UINT32 flags )
{
SCROLLBAR_INFO *infoPtr;
if (!(infoPtr = SCROLL_GetScrollInfo( hwnd, nBar ))) return FALSE;
dprintf_scroll( stddeb, "EnableScrollBar: %04x %d %d\n",
hwnd, nBar, flags );
flags &= ESB_DISABLE_BOTH;
if (infoPtr->flags == flags) return FALSE;
infoPtr->flags = flags;
/* Redraw the whole scroll bar */
SCROLL_RefreshScrollBar( hwnd, nBar, TRUE );
return TRUE;
}
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