From 78cc1a5768ce7636f599fc168654f54cc3361648 Mon Sep 17 00:00:00 2001
From: Alexander Gottwald <alexander.gottwald@s1999.tu-chemnitz.de>
Date: Thu, 18 Mar 2004 15:46:03 +0000
Subject: [PATCH] Fix for the Root Window 100% CPU bug use lParam in    
 winRedrawAllProcShadowGDI as indicator which window initiated the call    
 since EnumerateThreadWindows is called from WM_PAINT handler too and    
 invalidates the fresh painted window right after painting it.

---
 hw/xwin/winshadgdi.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/hw/xwin/winshadgdi.c b/hw/xwin/winshadgdi.c
index 195110bd0..d6fa89474 100644
--- a/hw/xwin/winshadgdi.c
+++ b/hw/xwin/winshadgdi.c
@@ -228,6 +228,8 @@ winQueryRGBBitsAndMasks (ScreenPtr pScreen)
 BOOL CALLBACK
 winRedrawAllProcShadowGDI (HWND hwnd, LPARAM lParam)
 {
+  if (hwnd == (HWND)lParam)
+    return TRUE;  
   InvalidateRect (hwnd, NULL, FALSE);
   UpdateWindow (hwnd);
   return TRUE;
@@ -839,7 +841,8 @@ winBltExposedRegionsShadowGDI (ScreenPtr pScreen)
 #ifdef XWIN_MULTIWINDOW
   /* Redraw all windows */
   if (pScreenInfo->fMultiWindow)
-    EnumThreadWindows(g_dwCurrentThreadID, winRedrawAllProcShadowGDI, 0);
+    EnumThreadWindows(g_dwCurrentThreadID, winRedrawAllProcShadowGDI, 
+            (LPARAM)pScreenPriv->hwndScreen);
 #endif
 
   return TRUE;