Are those good bindings , or auto-generated or outdated ones ? I did not checked in a long time but I think only Python had decent bindings. I would avoid non-official bindings, those are most of the time garbage and you waste your time instead of focusing on your work.

I seen Qt in a lot of proprietary applications, including launchers for video games (the app that will let you setup a game configuration before launch) - I was surprised why a Windows only video game would not use the Windows APi directly, but it is obvious that Qt is better then whatever Windows has this days for c++ devs and game devs are not afraid of a bit of c++ or have some irrational disgust for Qt pre-procesor (I see this excuse all the time, we don't switch from GTK to Qt because of the qmake/moc I honestly prefer an honest explanation)