645 lines
17 KiB
C
645 lines
17 KiB
C
/*
|
|
* USER DCE functions
|
|
*
|
|
* Copyright 1993 Alexandre Julliard
|
|
* 1996,1997 Alex Korobka
|
|
*
|
|
*
|
|
* Note: Visible regions of CS_OWNDC/CS_CLASSDC window DCs
|
|
* have to be updated dynamically.
|
|
*
|
|
* Internal DCX flags:
|
|
*
|
|
* DCX_DCEEMPTY - dce is uninitialized
|
|
* DCX_DCEBUSY - dce is in use
|
|
* DCX_DCEDIRTY - ReleaseDC() should wipe instead of caching
|
|
* DCX_KEEPCLIPRGN - ReleaseDC() should not delete the clipping region
|
|
* DCX_WINDOWPAINT - BeginPaint() is in effect
|
|
*/
|
|
|
|
#include <assert.h>
|
|
#include "dce.h"
|
|
#include "win.h"
|
|
#include "gdi.h"
|
|
#include "region.h"
|
|
#include "user.h"
|
|
#include "debugtools.h"
|
|
#include "windef.h"
|
|
#include "wingdi.h"
|
|
#include "wine/winbase16.h"
|
|
#include "wine/winuser16.h"
|
|
|
|
DEFAULT_DEBUG_CHANNEL(dc);
|
|
|
|
static DCE *firstDCE;
|
|
static HDC defaultDCstate;
|
|
|
|
static void DCE_DeleteClipRgn( DCE* );
|
|
static INT DCE_ReleaseDC( DCE* );
|
|
|
|
|
|
/***********************************************************************
|
|
* DCE_DumpCache
|
|
*/
|
|
static void DCE_DumpCache(void)
|
|
{
|
|
DCE *dce;
|
|
|
|
USER_Lock();
|
|
dce = firstDCE;
|
|
|
|
DPRINTF("DCE:\n");
|
|
while( dce )
|
|
{
|
|
DPRINTF("\t[0x%08x] hWnd 0x%04x, dcx %08x, %s %s\n",
|
|
(unsigned)dce, dce->hwndCurrent, (unsigned)dce->DCXflags,
|
|
(dce->DCXflags & DCX_CACHE) ? "Cache" : "Owned",
|
|
(dce->DCXflags & DCX_DCEBUSY) ? "InUse" : "" );
|
|
dce = dce->next;
|
|
}
|
|
|
|
USER_Unlock();
|
|
}
|
|
|
|
/***********************************************************************
|
|
* DCE_AllocDCE
|
|
*
|
|
* Allocate a new DCE.
|
|
*/
|
|
DCE *DCE_AllocDCE( HWND hWnd, DCE_TYPE type )
|
|
{
|
|
FARPROC16 hookProc;
|
|
DCE * dce;
|
|
|
|
if (!(dce = HeapAlloc( GetProcessHeap(), 0, sizeof(DCE) ))) return NULL;
|
|
if (!(dce->hDC = CreateDCA( "DISPLAY", NULL, NULL, NULL )))
|
|
{
|
|
HeapFree( GetProcessHeap(), 0, dce );
|
|
return 0;
|
|
}
|
|
if (!defaultDCstate) defaultDCstate = GetDCState16( dce->hDC );
|
|
|
|
/* store DCE handle in DC hook data field */
|
|
|
|
hookProc = GetProcAddress16( GetModuleHandle16("USER"), (LPCSTR)362 );
|
|
SetDCHook( dce->hDC, hookProc, (DWORD)dce );
|
|
|
|
dce->hwndCurrent = WIN_GetFullHandle( hWnd );
|
|
dce->hClipRgn = 0;
|
|
|
|
if( type != DCE_CACHE_DC ) /* owned or class DC */
|
|
{
|
|
dce->DCXflags = DCX_DCEBUSY;
|
|
if( hWnd )
|
|
{
|
|
LONG style = GetWindowLongW( hWnd, GWL_STYLE );
|
|
if (style & WS_CLIPCHILDREN) dce->DCXflags |= DCX_CLIPCHILDREN;
|
|
if (style & WS_CLIPSIBLINGS) dce->DCXflags |= DCX_CLIPSIBLINGS;
|
|
}
|
|
SetHookFlags16(dce->hDC,DCHF_INVALIDATEVISRGN);
|
|
}
|
|
else dce->DCXflags = DCX_CACHE | DCX_DCEEMPTY;
|
|
|
|
USER_Lock();
|
|
dce->next = firstDCE;
|
|
firstDCE = dce;
|
|
USER_Unlock();
|
|
return dce;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* DCE_FreeDCE
|
|
*/
|
|
DCE* DCE_FreeDCE( DCE *dce )
|
|
{
|
|
DCE **ppDCE, *ret;
|
|
|
|
if (!dce) return NULL;
|
|
|
|
USER_Lock();
|
|
|
|
ppDCE = &firstDCE;
|
|
|
|
while (*ppDCE && (*ppDCE != dce)) ppDCE = &(*ppDCE)->next;
|
|
if (*ppDCE == dce) *ppDCE = dce->next;
|
|
ret = *ppDCE;
|
|
USER_Unlock();
|
|
|
|
SetDCHook(dce->hDC, NULL, 0L);
|
|
|
|
DeleteDC( dce->hDC );
|
|
if( dce->hClipRgn && !(dce->DCXflags & DCX_KEEPCLIPRGN) )
|
|
DeleteObject(dce->hClipRgn);
|
|
HeapFree( GetProcessHeap(), 0, dce );
|
|
|
|
return ret;
|
|
}
|
|
|
|
/***********************************************************************
|
|
* DCE_FreeWindowDCE
|
|
*
|
|
* Remove owned DCE and reset unreleased cache DCEs.
|
|
*/
|
|
void DCE_FreeWindowDCE( HWND hwnd )
|
|
{
|
|
DCE *pDCE;
|
|
WND *pWnd = WIN_GetPtr( hwnd );
|
|
|
|
pDCE = firstDCE;
|
|
while( pDCE )
|
|
{
|
|
if( pDCE->hwndCurrent == hwnd )
|
|
{
|
|
if( pDCE == pWnd->dce ) /* owned or Class DCE*/
|
|
{
|
|
if (pWnd->clsStyle & CS_OWNDC) /* owned DCE*/
|
|
{
|
|
pDCE = DCE_FreeDCE( pDCE );
|
|
pWnd->dce = NULL;
|
|
continue;
|
|
}
|
|
else if( pDCE->DCXflags & (DCX_INTERSECTRGN | DCX_EXCLUDERGN) ) /* Class DCE*/
|
|
{
|
|
DCE_DeleteClipRgn( pDCE );
|
|
pDCE->hwndCurrent = 0;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if( pDCE->DCXflags & DCX_DCEBUSY ) /* shared cache DCE */
|
|
{
|
|
/* FIXME: AFAICS we are doing the right thing here so
|
|
* this should be a WARN. But this is best left as an ERR
|
|
* because the 'application error' is likely to come from
|
|
* another part of Wine (i.e. it's our fault after all).
|
|
* We should change this to WARN when Wine is more stable
|
|
* (for 1.0?).
|
|
*/
|
|
ERR("[%08x] GetDC() without ReleaseDC()!\n",hwnd);
|
|
DCE_ReleaseDC( pDCE );
|
|
}
|
|
|
|
pDCE->DCXflags &= DCX_CACHE;
|
|
pDCE->DCXflags |= DCX_DCEEMPTY;
|
|
pDCE->hwndCurrent = 0;
|
|
}
|
|
}
|
|
pDCE = pDCE->next;
|
|
}
|
|
WIN_ReleasePtr( pWnd );
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* DCE_DeleteClipRgn
|
|
*/
|
|
static void DCE_DeleteClipRgn( DCE* dce )
|
|
{
|
|
dce->DCXflags &= ~(DCX_EXCLUDERGN | DCX_INTERSECTRGN | DCX_WINDOWPAINT);
|
|
|
|
if( dce->DCXflags & DCX_KEEPCLIPRGN )
|
|
dce->DCXflags &= ~DCX_KEEPCLIPRGN;
|
|
else
|
|
if( dce->hClipRgn > 1 )
|
|
DeleteObject( dce->hClipRgn );
|
|
|
|
dce->hClipRgn = 0;
|
|
|
|
/* make it dirty so that the vis rgn gets recomputed next time */
|
|
dce->DCXflags |= DCX_DCEDIRTY;
|
|
SetHookFlags16( dce->hDC, DCHF_INVALIDATEVISRGN );
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* DCE_ReleaseDC
|
|
*/
|
|
static INT DCE_ReleaseDC( DCE* dce )
|
|
{
|
|
if ((dce->DCXflags & (DCX_DCEEMPTY | DCX_DCEBUSY)) != DCX_DCEBUSY) return 0;
|
|
|
|
/* restore previous visible region */
|
|
|
|
if ((dce->DCXflags & (DCX_INTERSECTRGN | DCX_EXCLUDERGN)) &&
|
|
(dce->DCXflags & (DCX_CACHE | DCX_WINDOWPAINT)) )
|
|
DCE_DeleteClipRgn( dce );
|
|
|
|
if (dce->DCXflags & DCX_CACHE)
|
|
{
|
|
SetDCState16( dce->hDC, defaultDCstate );
|
|
dce->DCXflags &= ~DCX_DCEBUSY;
|
|
if (dce->DCXflags & DCX_DCEDIRTY)
|
|
{
|
|
/* don't keep around invalidated entries
|
|
* because SetDCState() disables hVisRgn updates
|
|
* by removing dirty bit. */
|
|
|
|
dce->hwndCurrent = 0;
|
|
dce->DCXflags &= DCX_CACHE;
|
|
dce->DCXflags |= DCX_DCEEMPTY;
|
|
}
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* DCE_InvalidateDCE
|
|
*
|
|
* It is called from SetWindowPos() and EVENT_MapNotify - we have to
|
|
* mark as dirty all busy DCEs for windows that have pWnd->parent as
|
|
* an ancestor and whose client rect intersects with specified update
|
|
* rectangle. In addition, pWnd->parent DCEs may need to be updated if
|
|
* DCX_CLIPCHILDREN flag is set. */
|
|
BOOL DCE_InvalidateDCE(HWND hwnd, const RECT* pRectUpdate)
|
|
{
|
|
HWND hwndScope = GetAncestor( hwnd, GA_PARENT );
|
|
BOOL bRet = FALSE;
|
|
|
|
if( hwndScope )
|
|
{
|
|
DCE *dce;
|
|
|
|
TRACE("scope hwnd = %04x, (%i,%i - %i,%i)\n",
|
|
hwndScope, pRectUpdate->left,pRectUpdate->top,
|
|
pRectUpdate->right,pRectUpdate->bottom);
|
|
if(TRACE_ON(dc))
|
|
DCE_DumpCache();
|
|
|
|
/* walk all DCEs and fixup non-empty entries */
|
|
|
|
for (dce = firstDCE; (dce); dce = dce->next)
|
|
{
|
|
if (dce->DCXflags & DCX_DCEEMPTY) continue;
|
|
if ((dce->hwndCurrent == hwndScope) && !(dce->DCXflags & DCX_CLIPCHILDREN))
|
|
continue; /* child window positions don't bother us */
|
|
|
|
/* check if DCE window is within the z-order scope */
|
|
|
|
if (hwndScope == dce->hwndCurrent || IsChild( hwndScope, dce->hwndCurrent ))
|
|
{
|
|
if (hwnd != dce->hwndCurrent)
|
|
{
|
|
/* check if the window rectangle intersects this DCE window */
|
|
RECT rect;
|
|
GetWindowRect( dce->hwndCurrent, &rect );
|
|
MapWindowPoints( 0, hwndScope, (POINT *)&rect, 2 );
|
|
if (!IntersectRect( &rect, &rect, pRectUpdate )) continue;
|
|
|
|
}
|
|
if( !(dce->DCXflags & DCX_DCEBUSY) )
|
|
{
|
|
/* Don't bother with visible regions of unused DCEs */
|
|
|
|
TRACE("\tpurged %p dce [%04x]\n", dce, dce->hwndCurrent);
|
|
dce->hwndCurrent = 0;
|
|
dce->DCXflags &= DCX_CACHE;
|
|
dce->DCXflags |= DCX_DCEEMPTY;
|
|
}
|
|
else
|
|
{
|
|
/* Set dirty bits in the hDC and DCE structs */
|
|
|
|
TRACE("\tfixed up %p dce [%04x]\n", dce, dce->hwndCurrent);
|
|
dce->DCXflags |= DCX_DCEDIRTY;
|
|
SetHookFlags16(dce->hDC, DCHF_INVALIDATEVISRGN);
|
|
bRet = TRUE;
|
|
}
|
|
}
|
|
} /* dce list */
|
|
}
|
|
return bRet;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* DCE_ExcludeRgn
|
|
*
|
|
* Translate given region from the wnd client to the DC coordinates
|
|
* and add it to the clipping region.
|
|
*/
|
|
INT DCE_ExcludeRgn( HDC hDC, HWND hwnd, HRGN hRgn )
|
|
{
|
|
POINT pt = {0, 0};
|
|
DCE *dce = firstDCE;
|
|
|
|
while (dce && (dce->hDC != hDC)) dce = dce->next;
|
|
if (!dce) return ERROR;
|
|
|
|
MapWindowPoints( hwnd, dce->hwndCurrent, &pt, 1);
|
|
if( dce->DCXflags & DCX_WINDOW )
|
|
{
|
|
WND *wnd = WIN_FindWndPtr(dce->hwndCurrent);
|
|
pt.x += wnd->rectClient.left - wnd->rectWindow.left;
|
|
pt.y += wnd->rectClient.top - wnd->rectWindow.top;
|
|
WIN_ReleaseWndPtr(wnd);
|
|
}
|
|
OffsetRgn(hRgn, pt.x, pt.y);
|
|
|
|
return ExtSelectClipRgn( hDC, hRgn, RGN_DIFF );
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* GetDCEx (USER32.@)
|
|
*
|
|
* Unimplemented flags: DCX_LOCKWINDOWUPDATE
|
|
*
|
|
* FIXME: Full support for hrgnClip == 1 (alias for entire window).
|
|
*/
|
|
HDC WINAPI GetDCEx( HWND hwnd, HRGN hrgnClip, DWORD flags )
|
|
{
|
|
HDC hdc = 0;
|
|
DCE * dce;
|
|
WND * wndPtr;
|
|
DWORD dcxFlags = 0;
|
|
BOOL bUpdateVisRgn = TRUE;
|
|
BOOL bUpdateClipOrigin = FALSE;
|
|
HWND parent, full;
|
|
|
|
TRACE("hwnd %04x, hrgnClip %04x, flags %08x\n",
|
|
hwnd, hrgnClip, (unsigned)flags);
|
|
|
|
if (!hwnd) hwnd = GetDesktopWindow();
|
|
if (!(full = WIN_IsCurrentProcess( hwnd )) && full != GetDesktopWindow())
|
|
{
|
|
FIXME( "not supported yet on other process window %x\n", full );
|
|
return 0;
|
|
}
|
|
hwnd = full;
|
|
if (!(wndPtr = WIN_GetPtr( hwnd ))) return 0;
|
|
|
|
/* fixup flags */
|
|
|
|
if (flags & (DCX_WINDOW | DCX_PARENTCLIP)) flags |= DCX_CACHE;
|
|
|
|
if (flags & DCX_USESTYLE)
|
|
{
|
|
flags &= ~( DCX_CLIPCHILDREN | DCX_CLIPSIBLINGS | DCX_PARENTCLIP);
|
|
|
|
if( wndPtr->dwStyle & WS_CLIPSIBLINGS )
|
|
flags |= DCX_CLIPSIBLINGS;
|
|
|
|
if ( !(flags & DCX_WINDOW) )
|
|
{
|
|
if (wndPtr->clsStyle & CS_PARENTDC) flags |= DCX_PARENTCLIP;
|
|
|
|
if (wndPtr->dwStyle & WS_CLIPCHILDREN &&
|
|
!(wndPtr->dwStyle & WS_MINIMIZE) ) flags |= DCX_CLIPCHILDREN;
|
|
if (!wndPtr->dce) flags |= DCX_CACHE;
|
|
}
|
|
}
|
|
|
|
if (flags & DCX_WINDOW) flags &= ~DCX_CLIPCHILDREN;
|
|
|
|
parent = GetAncestor( hwnd, GA_PARENT );
|
|
if (!parent || (parent == GetDesktopWindow()))
|
|
flags = (flags & ~DCX_PARENTCLIP) | DCX_CLIPSIBLINGS;
|
|
|
|
/* it seems parent clip is ignored when clipping siblings or children */
|
|
if (flags & (DCX_CLIPSIBLINGS | DCX_CLIPCHILDREN)) flags &= ~DCX_PARENTCLIP;
|
|
|
|
if( flags & DCX_PARENTCLIP )
|
|
{
|
|
LONG parent_style = GetWindowLongW( parent, GWL_STYLE );
|
|
if( (wndPtr->dwStyle & WS_VISIBLE) && (parent_style & WS_VISIBLE) )
|
|
{
|
|
flags &= ~DCX_CLIPCHILDREN;
|
|
if (parent_style & WS_CLIPSIBLINGS) flags |= DCX_CLIPSIBLINGS;
|
|
}
|
|
}
|
|
|
|
/* find a suitable DCE */
|
|
|
|
dcxFlags = flags & (DCX_PARENTCLIP | DCX_CLIPSIBLINGS | DCX_CLIPCHILDREN |
|
|
DCX_CACHE | DCX_WINDOW);
|
|
|
|
if (flags & DCX_CACHE)
|
|
{
|
|
DCE* dceEmpty;
|
|
DCE* dceUnused;
|
|
|
|
dceEmpty = dceUnused = NULL;
|
|
|
|
/* Strategy: First, we attempt to find a non-empty but unused DCE with
|
|
* compatible flags. Next, we look for an empty entry. If the cache is
|
|
* full we have to purge one of the unused entries.
|
|
*/
|
|
|
|
for (dce = firstDCE; (dce); dce = dce->next)
|
|
{
|
|
if ((dce->DCXflags & (DCX_CACHE | DCX_DCEBUSY)) == DCX_CACHE )
|
|
{
|
|
dceUnused = dce;
|
|
|
|
if (dce->DCXflags & DCX_DCEEMPTY)
|
|
dceEmpty = dce;
|
|
else
|
|
if ((dce->hwndCurrent == hwnd) &&
|
|
((dce->DCXflags & (DCX_CLIPSIBLINGS | DCX_CLIPCHILDREN |
|
|
DCX_CACHE | DCX_WINDOW | DCX_PARENTCLIP)) == dcxFlags))
|
|
{
|
|
TRACE("\tfound valid %08x dce [%04x], flags %08x\n",
|
|
(unsigned)dce, hwnd, (unsigned)dcxFlags );
|
|
bUpdateVisRgn = FALSE;
|
|
bUpdateClipOrigin = TRUE;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (!dce) dce = (dceEmpty) ? dceEmpty : dceUnused;
|
|
|
|
/* if there's no dce empty or unused, allocate a new one */
|
|
if (!dce)
|
|
{
|
|
dce = DCE_AllocDCE( 0, DCE_CACHE_DC );
|
|
}
|
|
}
|
|
else
|
|
{
|
|
dce = wndPtr->dce;
|
|
if (dce && dce->hwndCurrent == hwnd)
|
|
{
|
|
TRACE("\tskipping hVisRgn update\n");
|
|
bUpdateVisRgn = FALSE; /* updated automatically, via DCHook() */
|
|
}
|
|
}
|
|
if (!dce)
|
|
{
|
|
hdc = 0;
|
|
goto END;
|
|
}
|
|
|
|
if (!(flags & (DCX_INTERSECTRGN | DCX_EXCLUDERGN))) hrgnClip = 0;
|
|
|
|
if (((flags ^ dce->DCXflags) & (DCX_INTERSECTRGN | DCX_EXCLUDERGN)) &&
|
|
(dce->hClipRgn != hrgnClip))
|
|
{
|
|
/* if the extra clip region has changed, get rid of the old one */
|
|
DCE_DeleteClipRgn( dce );
|
|
}
|
|
|
|
dce->hwndCurrent = hwnd;
|
|
dce->hClipRgn = hrgnClip;
|
|
dce->DCXflags = flags & (DCX_PARENTCLIP | DCX_CLIPSIBLINGS | DCX_CLIPCHILDREN |
|
|
DCX_CACHE | DCX_WINDOW | DCX_WINDOWPAINT |
|
|
DCX_KEEPCLIPRGN | DCX_INTERSECTRGN | DCX_EXCLUDERGN);
|
|
dce->DCXflags |= DCX_DCEBUSY;
|
|
dce->DCXflags &= ~DCX_DCEDIRTY;
|
|
hdc = dce->hDC;
|
|
|
|
if (bUpdateVisRgn) SetHookFlags16( hdc, DCHF_INVALIDATEVISRGN ); /* force update */
|
|
|
|
if (!USER_Driver.pGetDC( hwnd, hdc, hrgnClip, flags )) hdc = 0;
|
|
|
|
TRACE("(%04x,%04x,0x%lx): returning %04x\n", hwnd, hrgnClip, flags, hdc);
|
|
END:
|
|
WIN_ReleasePtr(wndPtr);
|
|
return hdc;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* GetDC (USER32.@)
|
|
* RETURNS
|
|
* :Handle to DC
|
|
* NULL: Failure
|
|
*/
|
|
HDC WINAPI GetDC(
|
|
HWND hwnd /* [in] handle of window */
|
|
) {
|
|
if (!hwnd)
|
|
return GetDCEx( 0, 0, DCX_CACHE | DCX_WINDOW );
|
|
return GetDCEx( hwnd, 0, DCX_USESTYLE );
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* GetWindowDC (USER32.@)
|
|
*/
|
|
HDC WINAPI GetWindowDC( HWND hwnd )
|
|
{
|
|
return GetDCEx( hwnd, 0, DCX_USESTYLE | DCX_WINDOW );
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* ReleaseDC (USER32.@)
|
|
*
|
|
* RETURNS
|
|
* 1: Success
|
|
* 0: Failure
|
|
*/
|
|
INT WINAPI ReleaseDC(
|
|
HWND hwnd /* [in] Handle of window - ignored */,
|
|
HDC hdc /* [in] Handle of device context */
|
|
) {
|
|
DCE * dce;
|
|
INT nRet = 0;
|
|
|
|
USER_Lock();
|
|
dce = firstDCE;
|
|
|
|
TRACE("%04x %04x\n", hwnd, hdc );
|
|
|
|
while (dce && (dce->hDC != hdc)) dce = dce->next;
|
|
|
|
if ( dce )
|
|
if ( dce->DCXflags & DCX_DCEBUSY )
|
|
nRet = DCE_ReleaseDC( dce );
|
|
|
|
USER_Unlock();
|
|
|
|
return nRet;
|
|
}
|
|
|
|
/***********************************************************************
|
|
* DCHook (USER.362)
|
|
*
|
|
* See "Undoc. Windows" for hints (DC, SetDCHook, SetHookFlags)..
|
|
*/
|
|
BOOL16 WINAPI DCHook16( HDC16 hDC, WORD code, DWORD data, LPARAM lParam )
|
|
{
|
|
BOOL retv = TRUE;
|
|
DCE *dce = (DCE *)data;
|
|
|
|
TRACE("hDC = %04x, %i\n", hDC, code);
|
|
|
|
if (!dce) return 0;
|
|
assert(dce->hDC == hDC);
|
|
|
|
/* Grab the windows lock before doing anything else */
|
|
USER_Lock();
|
|
|
|
switch( code )
|
|
{
|
|
case DCHC_INVALIDVISRGN:
|
|
/* GDI code calls this when it detects that the
|
|
* DC is dirty (usually after SetHookFlags()). This
|
|
* means that we have to recompute the visible region.
|
|
*/
|
|
if( dce->DCXflags & DCX_DCEBUSY )
|
|
{
|
|
/* Dirty bit has been cleared by caller, set it again so that
|
|
* pGetDC recomputes the visible region. */
|
|
SetHookFlags16( dce->hDC, DCHF_INVALIDATEVISRGN );
|
|
USER_Driver.pGetDC( dce->hwndCurrent, dce->hDC, dce->hClipRgn, dce->DCXflags );
|
|
}
|
|
else /* non-fatal but shouldn't happen */
|
|
WARN("DC is not in use!\n");
|
|
break;
|
|
|
|
case DCHC_DELETEDC:
|
|
/*
|
|
* Windows will not let you delete a DC that is busy
|
|
* (between GetDC and ReleaseDC)
|
|
*/
|
|
|
|
if ( dce->DCXflags & DCX_DCEBUSY )
|
|
{
|
|
WARN("Application trying to delete a busy DC\n");
|
|
retv = FALSE;
|
|
}
|
|
else DCE_FreeDCE( dce );
|
|
break;
|
|
|
|
default:
|
|
FIXME("unknown code\n");
|
|
}
|
|
|
|
USER_Unlock(); /* Release the wnd lock */
|
|
return retv;
|
|
}
|
|
|
|
|
|
/**********************************************************************
|
|
* WindowFromDC (USER32.@)
|
|
*/
|
|
HWND WINAPI WindowFromDC( HDC hDC )
|
|
{
|
|
DCE *dce;
|
|
HWND hwnd;
|
|
|
|
USER_Lock();
|
|
dce = firstDCE;
|
|
|
|
while (dce && (dce->hDC != hDC)) dce = dce->next;
|
|
|
|
hwnd = dce ? dce->hwndCurrent : 0;
|
|
USER_Unlock();
|
|
|
|
return hwnd;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* LockWindowUpdate (USER32.@)
|
|
*/
|
|
BOOL WINAPI LockWindowUpdate( HWND hwnd )
|
|
{
|
|
FIXME("(%x), stub!\n",hwnd);
|
|
return TRUE;
|
|
}
|