[vtkusers] Custom interaction in Tk

[Roger Blum]

Hello vtk users,

I am looking for a way to customize the interactive behaviour of 2 
vtkTkRenderWidgets (with different behaviour).

The vtk user guide (I am using vtk ver. 4.4) says in chapter 13.5 on page 
269 that the best way is to "... make a copy of bindings-rw.tcl and 
bindings.tcl ...".

I am wondering if this is really the way to go. Why can't I define my own 
vtkRenderWindowInteractors to handle my custom interaction?

I have tried to adapt the example CustomInteraction.tcl in the Tcl GUI 
examples. This does custom interaction the way I would like to do it, but 
uses no vtkTkRenderWidget. But all I got a crashing vtk (no error 
message!?!).

Thanks for any explanation and help solving this problem.
Roger