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Return empty instead of NULL region for invisible windows

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svn path=/trunk/; revision=8889
This commit is contained in:
Gé van Geldorp 2004-03-27 15:16:05 +00:00
parent 0fa710246c
commit 287b32c870
1 changed files with 5 additions and 5 deletions
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10
reactos/subsys/win32k/ntuser/vis.c
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@ -16,7 +16,7 @@
* along with this program; if not, write to the Free Software * along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
* *
* $Id: vis.c,v 1.25 2004/03/23 18:08:07 weiden Exp $ * $Id: vis.c,v 1.26 2004/03/27 15:16:05 gvg Exp $
* *
* COPYRIGHT: See COPYING in the top level directory * COPYRIGHT: See COPYING in the top level directory
* PROJECT: ReactOS kernel * PROJECT: ReactOS kernel
@ -54,12 +54,12 @@ VIS_ComputeVisibleRegion(
{ {
if(!(ClipRgn = VIS_ComputeVisibleRegion(Window, FALSE, ClipChildren, ClipSiblings))) if(!(ClipRgn = VIS_ComputeVisibleRegion(Window, FALSE, ClipChildren, ClipSiblings)))
{ {
return NULL; return NtGdiCreateRectRgn(0, 0, 0, 0);
} }
if(!(VisRgn = UnsafeIntCreateRectRgnIndirect(&Window->ClientRect))) if(!(VisRgn = UnsafeIntCreateRectRgnIndirect(&Window->ClientRect)))
{ {
NtGdiDeleteObject(VisRgn); NtGdiDeleteObject(VisRgn);
return NULL; return NtGdiCreateRectRgn(0, 0, 0, 0);
} }
LeftOffset = Window->ClientRect.left - Window->WindowRect.left; LeftOffset = Window->ClientRect.left - Window->WindowRect.left;
TopOffset = Window->ClientRect.top - Window->WindowRect.top; TopOffset = Window->ClientRect.top - Window->WindowRect.top;
@ -75,7 +75,7 @@ VIS_ComputeVisibleRegion(
TopOffset = Window->WindowRect.top; TopOffset = Window->WindowRect.top;
/* /*
* Walk through all perent windows and for each clip the visble region * Walk through all parent windows and for each clip the visble region
* to the parent's client area and exclude all siblings that are over * to the parent's client area and exclude all siblings that are over
* our window. * our window.
*/ */
@ -87,7 +87,7 @@ VIS_ComputeVisibleRegion(
if (!(CurrentWindow->Style & WS_VISIBLE)) if (!(CurrentWindow->Style & WS_VISIBLE))
{ {
NtGdiDeleteObject(VisRgn); NtGdiDeleteObject(VisRgn);
return NULL; return NtGdiCreateRectRgn(0, 0, 0, 0);
} }
ClipRgn = UnsafeIntCreateRectRgnIndirect(&CurrentWindow->ClientRect); ClipRgn = UnsafeIntCreateRectRgnIndirect(&CurrentWindow->ClientRect);
NtGdiCombineRgn(VisRgn, VisRgn, ClipRgn, RGN_AND); NtGdiCombineRgn(VisRgn, VisRgn, ClipRgn, RGN_AND);