Quote Originally Posted by wysota View Post
If I understand correctly, you just want to embed an external window (of OGRE origin) into your application. In that case what is the point of using it as a viewport of a graphics view?
Because I want to render a graphics scene as an overlay in OGRE (specifically to a dynamic texture drawn as an overlay material), effectively providing an OGRE GUI using Qt (even better if it becomes possible to draw widgets in a graphics view), hopefully allowing Qt to deal with the input handling. The reason for this is that none of the GUI (or input handling) libraries for OGRE are anywhere near the standard of Qt.

I would just draw other widgets straight on top of the OGRE widget, which works, only that wouldn't allow for alpha compositing which is something I need.