Substitute for Updategl method in QGLview class of qt3d

This is follow up on my previous question as some things are now clear to me.

1. You cannot explicitly call the paintGL method in qt.
2. QGLView class does not have the updateGL method- QGLWidget has it.

Based on these my questions are:

1. Can I use the QGL widget class in qt3d. Will I be able to use all the features like QGL builder etc here?
2. Is there any method in qglview which can substitute for the updategl method? Some method which is looked on before the paintgl class is called? Some function which is checked everytime before paintgl.

Any response would be very helpful. Thanks
Sunil