[vtkusers] vtkImageViewer2 and QVTKWidget

[Siavash Khallaghi]

This seems to be a known issue for QVTKWidget and ImageViewer2. See the
following:

https://www.google.ca/search?q=QVTKInteractor+cannot+control+the+event+loop&ie=utf-8&oe=utf-8&gws_rd=cr&ei=BpvfVYq4NpLdoAS83YXwBQ#q=QVTKInteractor+cannot+control+the+event+loop+site:public.kitware.com

For the record, I am developing a Qt GUI with a QVTKWidget myself to display
2D images. I did not run into the same problem as you, but then again, I
wrote my interactor from scratch to solve some specific issues.

Can you try adding the following line and see if it works. This is
referenced in:

http://public.kitware.com/pipermail/vtkusers/2010-August/061832.html

qvtkWidget->ProcessEventsOn();

Siavash



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