Intravision/reactos
1
0
Fork 0
mirror of https://github.com/reactos/reactos.git synced 2025-07-31 15:51:49 +00:00
Code Issues Projects Releases Packages Wiki Activity

don't pass NULL handles to NtGdiCombineRgn

Browse source 
svn path=/trunk/; revision=13640
This commit is contained in:
Thomas Bluemel 2005-02-19 11:13:41 +00:00
parent 5239de8ad5
commit 99f3640c17
2 changed files with 23 additions and 11 deletions
Download patch file Download diff file Expand all files Collapse all files

17
reactos/subsys/win32k/ntuser/painting.c
View file

@ -309,19 +309,20 @@ IntInvalidateWindows(PWINDOW_OBJECT Window, HRGN hRgn, ULONG Flags)
-Window->WindowRect.top);
hRgnNonClient = NtGdiCreateRectRgn(0, 0, 0, 0);
GDIOBJ_SetOwnership(hRgnNonClient, NULL);
if (NtGdiCombineRgn(hRgnNonClient, Window->UpdateRegion,
hRgnWindow, RGN_DIFF) == NULLREGION)
{
GDIOBJ_SetOwnership(hRgnNonClient, PsGetCurrentProcess());
NtGdiDeleteObject(hRgnNonClient);
hRgnNonClient = NULL;
}
else
{
GDIOBJ_SetOwnership(hRgnNonClient, NULL);
}
/*
* Remove the nonclient region from the standard update region.
*/
if (NtGdiCombineRgn(Window->UpdateRegion, Window->UpdateRegion,
hRgnWindow, RGN_AND) == NULLREGION)
{
@ -336,12 +337,12 @@ IntInvalidateWindows(PWINDOW_OBJECT Window, HRGN hRgn, ULONG Flags)
}
else
{
NtGdiCombineRgn(Window->NCUpdateRegion, Window->NCUpdateRegion,
hRgnNonClient, RGN_OR);
if (NULL != hRgnNonClient)
if(NULL != hRgnNonClient)
{
GDIOBJ_SetOwnership(hRgnNonClient, PsGetCurrentProcess());
NtGdiDeleteObject(hRgnNonClient);
NtGdiCombineRgn(Window->NCUpdateRegion, Window->NCUpdateRegion,
hRgnNonClient, RGN_OR);
GDIOBJ_SetOwnership(hRgnNonClient, PsGetCurrentProcess());
NtGdiDeleteObject(hRgnNonClient);
}
}

17
reactos/subsys/win32k/ntuser/windc.c
View file

@ -213,7 +213,7 @@ DceDeleteClipRgn(DCE* Dce)
{
Dce->DCXFlags &= ~DCX_KEEPCLIPRGN;
}
else if (Dce->hClipRgn > (HRGN) 1)
else if (Dce->hClipRgn != NULL)
{
GDIOBJ_SetOwnership(Dce->hClipRgn, PsGetCurrentProcess());
NtGdiDeleteObject(Dce->hClipRgn);
@ -332,10 +332,21 @@ DceUpdateVisRgn(DCE *Dce, PWINDOW_OBJECT Window, ULONG Flags)
noparent:
if (Flags & DCX_INTERSECTRGN)
{
NtGdiCombineRgn(hRgnVisible, hRgnVisible, Dce->hClipRgn, RGN_AND);
if(Dce->hClipRgn != NULL)
{
NtGdiCombineRgn(hRgnVisible, hRgnVisible, Dce->hClipRgn, RGN_AND);
}
else
{
if(hRgnVisible != NULL)
{
NtGdiDeleteObject(hRgnVisible);
}
hRgnVisible = NtGdiCreateRectRgn(0, 0, 0, 0);
}
}
if (Flags & DCX_EXCLUDERGN)
if (Flags & DCX_EXCLUDERGN && Dce->hClipRgn != NULL)
{
NtGdiCombineRgn(hRgnVisible, hRgnVisible, Dce->hClipRgn, RGN_DIFF);
}