anchor.diff:      QueueAcceptDrops: boolean;
       function    DoMouseEnterLeaveCheck(AWindow: TfpgGDIWindow; uMsg, wParam, lParam: Cardinal): Boolean;
       procedure   WindowSetFullscreen(aFullScreen, aUpdate: boolean);
  -    {$IFNDEF WINCE}
  +    {$IFDEF HAS_DND}
       property    DropManager: TfpgOLEDropTarget read GetDropManager;
       {$ENDIF}
     protected
  
positive.code:   // this are required for Windows MouseEnter & MouseExit detection.
    uLastWindowHndl: TfpgWinHandle;
  
  {$IFNDEF WINCE}
  procedure TfpgGDIWindow.HandleDNDLeave(Sender: TObject);
  var
    wg: TfpgWidget;
  
negative.code:   {$IFDEF DEBUG}
    ,fpg_dbugintf
    {$ENDIF DEBUG}
    {$IFDEF HAS_DND}
    ,fpg_OLEDragDrop
    {$ENDIF}
    ;
  