Thank you. This seems to be worth trying. The vtk 8.0.0 I am currently using does not include QVTKopenglNativeWidget, so I can't test it easily. First, I will finish this project and try it. Thank you very much for your reply. -- Sent from: http://vtk.1045678.n5.nabble.com/VTK-Users-f1224199.html