[EDropResult](API\Editor\UMGEditor\IPropertyBindingExtension\EDropResult) OnDrop ( const [FGeometry](API\Runtime\SlateCore\Layout\FGeometry) & Geometry, const [FDragDropEvent](API\Runtime\SlateCore\Input\FDragDropEvent) & DragDropEvent, [UWidgetBlueprint](API\Editor\UMGEditor\UWidgetBlueprint) * WidgetBlueprint, [UWidget](API\Runtime\UMG\Components\UWidget) * Widget, [TSharedPtr](API\Runtime\Core\Templates\TSharedPtr)< [IPropertyHandle](API\Editor\PropertyEditor\IPropertyHandle) > WidgetPropertyHandle )