I would be happy to take care of removing the sentence, “You can use QVTKOpenGLNativeWidget::copyToFormat to obtain a QSurfaceFormat appropriate for a vtkRenderWindow.”
Should we provide an alternative way to “obtain a QSurfaceFormat appropriate for a vtkRenderWindow”?
Also, the sample code provided below this sentence works for VTK 8.2, but requires a minor edit for a current VTK build.