compiling issue with regards QVTKOpenGLWidget in vv.cxx

[tontyoutoure]

when I compile vv with vtk version 9.0, a error occurs:

vv/src/vv/vv.cxx:46:10: fatal error: QVTKOpenGLWidget.h: No such file or directory

I did some digging, it turns out that VTK renamed QVTKOpenGLWidget to QVTKOpenGLStereoWidget :

https://github.com/Kitware/VTK/commits/e8168ca6c4a1f4ee03e9859e02f64131f7db4cf4/GUISupport/Qt/QVTKOpenGLStereoWidget.cxx

after I renamed in vv.cxx, the compling finishes smoothly.