anchor.diff:        FTop  := r.Top;
       end;
       Windows.UpdateWindow(FWinHandle);
  +    FSkipResizeMessage := False;
     end
     else
       Windows.ShowWindow(FWinHandle, SW_HIDE);
  
positive.code: 
    // the forms require some adjustments before the Window appears
    SetWindowParameters;
  end;
  
  procedure TfpgWindowImpl.DoReleaseWindowHandle;
  
negative.code:     FNonFullscreenRect: TfpgRect;
      FNonFullscreenStyle: longword;
      FFullscreenIsSet: boolean;
      FSkipResizeMessage: boolean;
      function    DoMouseEnterLeaveCheck(AWindow: TfpgWindowImpl; uMsg, wParam, lParam: Cardinal): Boolean;
      procedure   WindowSetFullscreen(aFullScreen, aUpdate: boolean);
    protected
  