you can use C++ for most things in your app and QML for UI only. or you can use C++ for everything. You're not required to use QML and HTML5 for your app, but i

you can use C++ for most things in your app and QML for UI only. or you can use C++ for everything. You're not required to use QML and HTML5 for your app, but in most cases (though not all) doing the UI in QML will be a good choice