protected:
virtual bool event(QEvent* event);
+ virtual void startDrag(Qt::DropActions supportedActions);
virtual void dragEnterEvent(QDragEnterEvent* event);
+ virtual void dragLeaveEvent(QDragLeaveEvent* event);
virtual void dragMoveEvent(QDragMoveEvent* event);
virtual void dropEvent(QDropEvent* event);
virtual void paintEvent(QPaintEvent* event);