I'd like to know too, because QT makes the best cross-platform apps. A QT app on OS X feels good to use in a way that other cross-platform GUI apps really don't

I'd like to know too, because QT makes the best cross-platform apps. A QT app on OS X feels good to use in a way that other cross-platform GUI apps really don't. But I've never tried to code with it, so I don't know what it's like behind the scenes.