[wxVTK] wxVTK with python

[Brian E. <bea...@em...>]

Hello everyone,

I have used wxVTK in C++ for a while, and wanted to try it in Python.  I 
have a fairly simple pipeline, using WrapITK and vtk's python wrappers:

            imageType = itk.Image[itk.US, 3]
            reader = itk.ImageFileReader[imageType].New()
            reader.SetFileName(fileIn)
           
            convert = itkvtk.ImageToVTKImageFilter[imageType].New()
            convert.SetInput(reader.GetOutput())
                                  
            render = vtk.vtkRenderer()
            self.rwi.GetRenderWindow().AddRenderer(render)

            viewer = vtk.vtkImagePlaneWidget()
            viewer.SetInput(convert.GetOutput())
            viewer.SetPlaneOrientationToZAxes()
            viewer.SetInteractor(self.rwi)
            viewer.SetWindowLevel(2000, 1000)
            viewer.DisplayTextOn()
            viewer.SetSliceIndex(60)
            viewer.On()

            self.rwi.GetRenderWindow().Render()

The image displays, but the application crashes when the render window 
is moused-over at wxVTKRenderWindowInteractor line 330:

        self._Iren.MouseMoveEvent()

Some other widgets don't seem to have this problem (e.g. a vtkImageActor 
added to a vtkRenderer by hand).

I am using:
cmake 2.6.0
ITK 3.6.0 with WrapITK
VTK 5.0.4
wxWidgets 2.8.7
wxVTK packaged from vtk or from the download here:  
http://www.vtk.org/cgi-bin/viewcvs.cgi/*checkout*/Wrapping/Python/vtk/wx/wxVTKRenderWindowInteractor.py

Has any one else had a similar experience?  Any help on this would be 
very much appreciated.

Thank you in advance,
Brian Eastwood