[vtkusers] QVTKInteractor lacking methods of vtkRenderWindowInteractor when wrapped for Python

[Andrea Borsic]

Dear All,

I am currently using VTK 5.8.0 under OSX, wrapped for Python by enabling 
SIP wrapping.

I am experiencing problems adding observers to a QVTKInteractor, as the 
method .AddObserver fails with the message: AttributeError

I have realized that the QVTKInteractor, when wrapped, does not show the 
methods of vtkRenderWindowInteractor from which it inherits.

For example this small test program:

import vtk
a = vtk.QVTKInteractor()
print dir(a)

results in:

['ContextMenuEvent', 'DragEnterEvent', 'DragLeaveEvent', 
'DragMoveEvent', 'DropEvent', 'GetClassName', 'Initialize', 'IsA', 
'Start', 'StartListening', 'StopListening', 'TerminateApp', 'TimerEvent']

but not in the many methods of vtkRenderWindowInteractor.

Am I doing something wrong, or something is not working correctly ? Has 
anybody experienced the same ?

Thanks for any feedback !

Andrea