[gadamopoulos] 74275: [WIN32K] -NtGdiGetRegionData: prgn->rdh.nRgnSize is the size of kernel mode buffer for the region. After copying it to the caller we should set lpRgnData->rdh.nRgnSize to cjRe...

Author: gadamopoulos
Date: Tue Apr  4 10:07:07 2017
New Revision: 74275

URL: http://svn.reactos.org/svn/reactos?rev=74275&view=rev
Log:
[WIN32K] -NtGdiGetRegionData: prgn->rdh.nRgnSize is the size of kernel mode buffer for
the region. After copying it to the caller we should set lpRgnData->rdh.nRgnSize to
cjRects.

Modified:
    trunk/reactos/win32ss/gdi/ntgdi/region.c

Modified: trunk/reactos/win32ss/gdi/ntgdi/region.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/win32ss/gdi/ntgdi/region.c…
==============================================================================
--- trunk/reactos/win32ss/gdi/ntgdi/region.c	[iso-8859-1] (original)
+++ trunk/reactos/win32ss/gdi/ntgdi/region.c	[iso-8859-1] Tue Apr  4 10:07:07 2017
@@ -4105,6 +4105,7 @@
                 RtlCopyMemory(lpRgnData, &prgn->rdh, sizeof(RGNDATAHEADER));
                 RtlCopyMemory(lpRgnData->Buffer, prgn->Buffer, cjRects);
                 lpRgnData->rdh.iType = RDH_RECTANGLES;
+                lpRgnData->rdh.nRgnSize = cjRects;
             }
             _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
             {