[vtkusers] How to pick an AxesActor?

[Lee Gross]

I'm looking for an example (preferably in Python) of how to pick a  
vtkAxesActor.  I need to be able to distinguish between picks of the  
X, Y, and Z axes.  I am currently able to pick other OpenGL actors.   
But trying to pick any of the axes is the same as picking nothing.  I  
have tried setting PickableOn but it didn't help.  Is there some  
setting to use with vtkOrientationMarkerWidget?

Thank you.

Lee Gross
Amoeba Technologies, Inc.