[vtkusers] vtkRenderWindowInteractor.Start() most of time does not open a Window

[François Rongère]

Hi,

I managed to build a convenience python class to show some meshes. The 
problem I have is that when the vtkWindowInteractor.Start() method is 
called, most of the time nothing happen and sometime I get the wanted 
window. I tried calling the vtkWindowInteractor.Initialize() method and 
it seems that this is the real culprit... The really strage thing is 
that sometimes it is successful...

In the case where it fails, I get no error message but the code seem to 
enter in the event loop as the command line is not released with no mean 
to take the hand back with a CTRL-C as the event loop does not support 
it, so it freezes my terminal. A try/except block catches no error too...

I have no clue of what is happening and how to start debugging.

I attached an example of this with example data file.

I am running python 2.7 with vtk 6.3.0 on a Debian Jessie workstation.

Any help appreciated,

Best regards,

François.


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