🚀 go-pugleaf

I'm trying to create a derived class of GraphicComp and a Graphical View for
that class in Unidraw.

I want to be able to exchange the graphic object of my derived class of
GraphicView in runtime, so my view sometimes look like a rectangle,
sometimes like an ellipse, or any other graphic.
(i.e. change the visible part of my view in the viewer, without changing
view)

My questions are:

* Why has the member functions Interpret,CreateManipulator and
  InterpretManipulator in class RectView implementations that differentiates
  so much from EllipseView and GraphicView? Is it necessary? (As a test, I
  removed all 'special' stuff in RectView so it looked like the one in
  EllipseView and run it in "pued". It worked just fine, but did I lose
  anything by doing this?)

* If I have understand thing correct Creator needs an instance of a graphic as
  a prototype for a view.  What is this prototype used for?
* Will it result in any problems if I change graphic (say from an SF_Ellipse
  to a SF_Rect) in my view, in runtime?

Please help me with these questions.

     /
    /  Erik Edlund