[vtkusers] Subclasses for vtkInteractorStyle

[Walter E Voit]

Hello,

I am a summer student new to vtk working on a visual editor.  I want to 
change some of the user interaction buttons like changing the "left mouse 
button click" to pick a cell instead of scroll around.

As far as I can tell, the way to subclass vtkInteractorStyle and its 
derived classes deals with the Object Factory.  However, I can't figure out 
how to have a program use functions from the class I created instead of 
using the functions from the classes in the library.

The documentation clearly says it can be done, but not specifically how to 
do it.

This novice would appreciate any help.

Sincerely,

Walter