I've always lamented that QML and QtWidgets are separate rather than integrated. It would be awesome if there was a declarative way to specify much of the same information that you have to specify programmatically with QtWidgets (e.g., the cumbersome process of defining nested sizers), and then you could write code to handle the actual "business logic". But instead we have two totally separate UI frameworks where you can either use the nice native QtWidgets or you can have a nice declarative UI definiton, but not both.
That seems to be a third-party library that claims to add Qt Widgets support to QML, but it's hard to see from those examples how exactly it works. It still seems to be using a QML-style layout framework. What I'm saying is I would want to have an app that is entirely Qt Widgets, with the same behavior as if I had written it in code, but using a declarative language to specify as much of that information as possible. (Also I'd want to be able use it from Python with PyQt/PySide, not just C++. :-)
