[jgardou] 59143: [WIN32K] - Fix ExtCreateRegion implementation CORE-4600 #comment Fixed in r59143. Thanks Giannis for the hint. #resolve

Author: jgardou
Date: Sun Jun  2 14:30:48 2013
New Revision: 59143

URL: http://svn.reactos.org/svn/reactos?rev=59143&view=rev
Log:
[WIN32K]
 - Fix ExtCreateRegion implementation
CORE-4600 #comment Fixed in r59143. Thanks Giannis for the hint. #resolve

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] Sun Jun  2 14:30:48 2013
@@ -3599,6 +3599,8 @@
     DWORD nCount = 0;
     DWORD iType = 0;
     DWORD dwSize = 0;
+	UINT i;
+	RECT* rects;
     NTSTATUS Status = STATUS_SUCCESS;
     MATRIX matrix;
     XFORMOBJ xo;
@@ -3610,6 +3612,7 @@
         nCount = RgnData->rdh.nCount;
         iType = RgnData->rdh.iType;
         dwSize = RgnData->rdh.dwSize;
+		rects = (RECT*)RgnData->Buffer;
     }
     _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
     {
@@ -3641,6 +3644,11 @@

_SEH2_TRY
     {
+		/* Insert the rectangles one by one */
+		for(i=0; i<nCount; i++)
+		{
+			REGION_UnionRectWithRgn(Region, &rects[i]);
+		}
         if (Xform)
         {
             ULONG ret;
@@ -3656,20 +3664,13 @@
                 /* Apply the coordinate transformation on the rects */
                 if (XFORMOBJ_bApplyXform(&xo,
                                          XF_LTOL,
-                                         nCount * 2,
-                                         RgnData->Buffer,
+                                         Region->rdh.nCount * 2,
+                                         Region->Buffer,
                                          Region->Buffer))
                 {
                     Status = STATUS_SUCCESS;
                 }
             }
-        }
-        else
-        {
-            /* Copy rect coordinates */
-            RtlCopyMemory(Region->Buffer,
-                          RgnData->Buffer,
-                          nCount * sizeof(RECT));
         }
     }
     _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)