diff -cNr vcl-orig/window.cxx vcl/window.cxx
*** vcl-orig/window.cxx	Fri Oct 26 17:07:04 2007
--- vcl/window.cxx	Fri Oct 26 16:15:58 2007
***************
*** 7637,7642 ****
--- 7637,7643 ----
          mpWindowImpl->mpFrame->CaptureMouse( FALSE );
          ImplGenerateMouseMove();
      }
+ 	Invalidate();
  }
  
  // -----------------------------------------------------------------------