diff -ur ooo_SRC680_m204_src/vcl.orig/unx/source/window/salframe.cxx ooo_SRC680_m204_src/vcl/unx/source/window/salframe.cxx
--- ooo_SRC680_m204_src/vcl.orig/unx/source/window/salframe.cxx	2007-02-27 16:08:48.000000000 +0100
+++ ooo_SRC680_m204_src/vcl/unx/source/window/salframe.cxx	2007-02-27 16:12:07.000000000 +0100
@@ -3442,6 +3442,40 @@
     {
         if( maGeometry.nX != pEvent->x || maGeometry.nY != pEvent->y )
         {
+            Size aScreenSize = GetDisplay()->GetScreenSize( m_nScreen );
+            unsigned int nScreenWidth  = aScreenSize.Width();
+            unsigned int nScreenHeight = aScreenSize.Height();
+
+            fprintf(stderr, "PJ: screensize %dx%d\n", nScreenWidth, nScreenHeight);
+            fprintf(stderr, "PJ: old position: +%d+%d\n", maGeometry.nX, maGeometry.nY);
+            fprintf(stderr, "PJ: new position: +%d+%d\n", pEvent->x, pEvent->y);
+
+#ifdef MACOSX
+            // Better would be to test if the X server we are running on is Apple X11, but ...
+
+            // Repaint the window if it was possible to draw outside of the screen (in theory)
+            // 1. the window was below the screen and the window was moved up
+            // 2. the window was above the screen and the window was moved down
+            // 3. the window was out of the screen on the right side and the window was moved left
+            // 4. the window's left part was out of the screen and the window was moved right
+            if ( ( maGeometry.nY+maGeometry.nHeight > nScreenHeight &&
+                   pEvent->y < maGeometry.nY ) ||
+                 ( maGeometry.nY < 0 && pEvent->y > maGeometry.nY ) ||
+                 ( maGeometry.nX+maGeometry.nWidth  > nScreenWidth  &&
+                   pEvent->x < maGeometry.nX ) ||
+                 ( maGeometry.nX < 0 && pEvent->x > maGeometry.nX) )
+                {
+                    XEvent aEvent;
+                    aEvent.xexpose.type		= Expose;
+                    aEvent.xexpose.display	= pDisplay_->GetDisplay();
+                    aEvent.xexpose.x		= 0;
+                    aEvent.xexpose.y		= 0;
+                    aEvent.xexpose.width	= maGeometry.nWidth;
+                    aEvent.xexpose.height	= maGeometry.nHeight;
+                    aEvent.xexpose.count	= 0;
+                    HandleExposeEvent(&aEvent);
+                }
+#endif
             maGeometry.nX = pEvent->x;
             maGeometry.nY = pEvent->y;
             CallCallback( SALEVENT_MOVE, NULL );