[vtkusers] TypeError: cannot create 'vtkclass' instances

[Prabhu Ramachandran]

>>>>> "SGD" == sebastien gd <sebastien_gd at yahoo.fr> writes:

    SGD> Hello I begin with python and I have this problem.  I wand to
    SGD> create a new vtkInteractorStyle so I have creae a nex class
    SGD> like this from vtkpython import *

    SGD> class sliceInteractorStyle(vtkInteractorStyleSwitch) :

Nope, you can't do that.  Read this for more details:

  http://public.kitware.com/cgi-bin/cvsweb.cgi/vtk/python/python.txt

In order to do what you need you can use the approach specified in the
above url or easier still define a function to handle your OnChar and
then add an observer to the renderwindow for the KeyPress/whatever
event.  The examples in VTK CVS should give you some idea of how to do
this -- look at Examples/GUI/Python/CustomInteraction.py.

cheers,
prabhu