Thanks Mathieu,
To get up to speed, I have installed Qt5, and built VTK-8.2.0 with Qt GUI support. To start with I am leaving my code as is, i.e. still using QVTKWidget. After many adjustments (to account for the changes from old versions of Qt and VTK) I am almost building my program (in Qt Creator). Now I just get one linking error:
/usr/local/lib/vtk-8.2/libvtkGUISupportQt-8.2.a(QVTKWidget.cxx.o)
In function QVTKWidget::SetRenderWindow(vtkRenderWindow*)': QVTKWidget.cxx:-1: error: undefined reference toQX11Info::display()’
Does this convey anything to you? Does it mean QVTKWidget is not just deprecated, it is also invalid?
Thanks
Gib