public override void Remove(GraphicObject obj) { children.Remove(obj); x = GetMaxX(); y = GetMinY(); }
public override void Add(GraphicObject obj) { children.Add(obj); x = GetMaxX(); y = GetMinY(); }
public virtual void Add(GraphicObject obj) { }
public virtual void Remove(GraphicObject obj) { }
public override void Remove(GraphicObject obj) { throw new Exception(); }