sub-classing RenderWindowInteractor in python?

[Maurizio Turatti]

Hi,
As the subject says, I want to build a new class which derives from
vtkRenderWindowInteractor, to get a different behaviour, but I get this
interpreter error:

Traceback (innermost last):
  File "tviewer.py", line 27, in ?
    class MyInteractor(vtkRenderWindowInteractor):
TypeError: base is not a class object

So how can I change interaction without rewriting an entire class from scratch?
I hope I don't have to switch to C++

Thanks,
Maurizio


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