[vtkusers] Newbie question!!!

[Julio Pastrana]

Hi VTK users,
Before anything else, I want to tell that this 
is a totally newbie question .. sorry about it.

I am trying to create a GUI where an image will be loaded 
and after that I want to draw some primitives on top of 
it (points, lines, circles, ellipses).

what is the best way to do it?

Is there an example already in the Docs (or 
several examples that could help me out)?

Could you please point me in the right direction?

Thank you!!

Julio