1 files changed, 14 insertions, 1 deletions
diff --git a/xorg-server/hw/xwin/winmultiwindowshape.c b/xorg-server/hw/xwin/winmultiwindowshape.c
index 62cddd0a1..28870646c 100644
--- a/xorg-server/hw/xwin/winmultiwindowshape.c
+++ b/xorg-server/hw/xwin/winmultiwindowshape.c
@@ -44,7 +44,6 @@ void
 winSetShapeMultiWindow (WindowPtr pWin)
 {
   ScreenPtr		pScreen = pWin->drawable.pScreen;
-  winWindowPriv(pWin);
   winScreenPriv(pScreen);
 
 #if CYGMULTIWINDOW_DEBUG
@@ -72,6 +71,9 @@ winUpdateRgnMultiWindow (WindowPtr pWin)
 {
   SetWindowRgn (winGetWindowPriv(pWin)->hWnd,
 		winGetWindowPriv(pWin)->hRgn, TRUE);
+
+  /* The system now owns the region specified by the region handle and delete it when it is no longer needed. */
+  winGetWindowPriv(pWin)->hRgn = NULL;
 }
 
 
@@ -207,3 +209,14 @@ winReshapeMultiWindow (WindowPtr pWin)
   
   return;
 }
+
+void
+winShapeRgnUpdateMultiwindow(HWND hwnd)
+{
+  WindowPtr pWin = GetProp (hwnd, WIN_WINDOW_PROP);
+  if (pWin)
+    {
+      winReshapeMultiWindow(pWin);
+      winUpdateRgnMultiWindow(pWin);
+    }
+}