virtual [FReply](API\Runtime\SlateCore\Input\FReply) OnDrop ( const [FGeometry](API\Runtime\SlateCore\Layout\FGeometry) & MyGeometry, const [FDragDropEvent](API\Runtime\SlateCore\Input\FDragDropEvent) & DragDropEvent, const [TSharedRef](API\Runtime\Core\Templates\TSharedRef)< [SWidget](API\Runtime\SlateCore\Widgets\SWidget) > & InParentWidget )