diff --git a/reactos/subsys/win32k/ntuser/painting.c b/reactos/subsys/win32k/ntuser/painting.c
index a4918cce92d..ffa863ba637 100644
--- a/reactos/subsys/win32k/ntuser/painting.c
+++ b/reactos/subsys/win32k/ntuser/painting.c
@@ -1,4 +1,4 @@
-/* $Id: painting.c,v 1.11 2003/03/20 10:10:12 gvg Exp $
+/* $Id: painting.c,v 1.12 2003/03/27 02:25:14 rcampbell Exp $
  *
  * COPYRIGHT:        See COPYING in the top level directory
  * PROJECT:          ReactOS kernel
@@ -832,3 +832,52 @@ NtUserBeginPaint(HWND hWnd, PAINTSTRUCT* lPs)
   ObmDereferenceObject(Window);
   return(lPs->hdc);
 }
+
+DWORD
+STDCALL
+NtUserInvalidateRect(
+  HWND hWnd,
+  CONST RECT *lpRect,
+  WINBOOL bErase)
+{
+   HRGN hRGN;
+   hRGN = W32kCreateRectRgnIndirect(lpRect);
+   return NtUserInvalidateRgn(hWnd, hRGN, bErase);
+}
+
+DWORD
+STDCALL
+NtUserInvalidateRgn(
+  HWND hWnd,
+  HRGN hRgn,
+  WINBOOL bErase)
+{
+  PWINDOW_OBJECT WindowObject;
+
+  WindowObject = W32kGetWindowObject(hWnd);
+  if (WindowObject == NULL)
+    {
+      return(FALSE);
+    }
+    
+  if( WindowObject->UpdateRegion == NULL )
+    {
+      WindowObject->UpdateRegion = W32kCreateRectRgn (0, 0, 1, 1);
+      if (!W32kCombineRgn(WindowObject->UpdateRegion, hRgn, hRgn, RGN_COPY ))
+      {
+         W32kReleaseWindowObject(WindowObject);
+         return(FALSE);
+      }
+    }
+
+  if (!W32kCombineRgn(WindowObject->UpdateRegion, WindowObject->UpdateRegion, hRgn, RGN_OR ))
+    {
+      W32kReleaseWindowObject(WindowObject);
+      return(FALSE);
+    }
+
+  W32kReleaseWindowObject(WindowObject);
+  W32kSendMessage(hWnd, WM_PAINT, 0, 0, FALSE);
+  return(TRUE);   
+}
+
diff --git a/reactos/subsys/win32k/ntuser/stubs.c b/reactos/subsys/win32k/ntuser/stubs.c
index f848bd5a9ab..6b2c536a733 100644
--- a/reactos/subsys/win32k/ntuser/stubs.c
+++ b/reactos/subsys/win32k/ntuser/stubs.c
@@ -1110,30 +1110,6 @@ NtUserInitTask(
   return 0;
 }
 
-DWORD
-STDCALL
-NtUserInvalidateRect(
-  DWORD Unknown0,
-  DWORD Unknown1,
-  DWORD Unknown2)
-{
-  UNIMPLEMENTED
-
-  return 0;
-}
-
-DWORD
-STDCALL
-NtUserInvalidateRgn(
-  DWORD Unknown0,
-  DWORD Unknown1,
-  DWORD Unknown2)
-{
-  UNIMPLEMENTED
-
-  return 0;
-}
-
 DWORD
 STDCALL
 NtUserIsClipboardFormatAvailable(
diff --git a/reactos/subsys/win32k/objects/dc.c b/reactos/subsys/win32k/objects/dc.c
index ac3401a2a95..91732dbd0ad 100644
--- a/reactos/subsys/win32k/objects/dc.c
+++ b/reactos/subsys/win32k/objects/dc.c
@@ -1,4 +1,4 @@
-/* $Id: dc.c,v 1.52 2003/03/24 22:49:54 gvg Exp $
+/* $Id: dc.c,v 1.53 2003/03/27 02:25:14 rcampbell Exp $
  *
  * DC.C - Device context functions
  *
@@ -1324,6 +1324,7 @@ HDC  DC_FindOpenDC(LPCWSTR  Driver)
 void  DC_InitDC(HDC  DCHandle)
 {
 //  W32kRealizeDefaultPalette(DCHandle);
+//W32kSelectObject(DCHandle, W32kGetStockObject( BLACK_PEN ));
 
   W32kSelectObject(DCHandle, W32kGetStockObject( WHITE_BRUSH ));
   //W32kSelectObject(DCHandle, hPen);