How to catch resize information

I have a class that is derived from GoGeneralNode. The created object is set to resize real-time. Dragging the object handle, the object will be resized. My question is how I could know when the resizing is started and stopped. Which method should I modify to get this kind of information?

Go Version: GoDiagram Win 3.0.3 for .NET 3.5



Override DoResize. evttype will be Start, Continue or Finish based on the state of the resize.