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Utkarsh Ayachit authored
QVTKWidget added a callback to the RenderEvent but never removed it. Consequently, if the QVTKWidget was destroyed before the vtkRenderWindow, got a segfault due to dangling pointer. Fixed that. Also cleaned up the callback code to use the newer/safer/cleaner API to add callbacks for class methods instead of static functions. Change-Id: I2980f17aea8710802b3f51592479ee269eebdfad
0db6e8bf