/**
* Selects or deselects the signal.
*/
- void select(bool select = true);
+ virtual void select(bool select = true);
/**
* Returns true if the item is being dragged.
/**
* Sets this item into the un-dragged state.
*/
- void drag_release();
+ virtual void drag_release();
/**
* Drags the item to a delta relative to the drag point.