public ResizeCompletedEventArgs(ResizeHandlePosition position) : base(position) { }
public ResizeStartedEventArgs(ResizeHandlePosition position) : base(position) { }
public ResizeDeltaEventArgs(ResizeHandlePosition position, Vector delta) : base(position) { _delta = delta; }
protected ResizeEventArgs(ResizeHandlePosition position) { _position = position; }