Embedding ROOT GLviewer in QT

Hello Sergey,
I have two last questions.

  1. I have some difficulties to totally understand the difference between an RCanvas and a TCanvas, except that RCanvas is still experimental as of today and will be released later. It seems I should be able to plot exactly the same graph inside both of them and I have the same options.

  2. Another point not totally clear to me is the difference between a TCanvas that I include in a QWebEngineView, as you showed me previously and a TCanvas that I include in Qt without a QWebEngineView, as shown in https://root-forum.cern.ch/t/root-and-qt5/19073/8. They are both the same ROOT object but act quite differently. For instance, the menus are different.

I know that’s quite basic questions but it is something unclear for me at the moment. Could you please help me to better understand?
Thanks,
Thomas