It's easy as pie, start with qmlscene and a QML Rect, add some MouseArea and change the rect's color when you click, later follow some QML / C++ binding tutoria

It's easy as pie, start with qmlscene and a QML Rect, add some MouseArea and change the rect's color when you click, later follow some QML / C++ binding tutorials. Some best practices: Still do your nontrivial models and other application logic in C++, don't try to solve every UI state problems with states and transitions - they are overkill for simple situations and underpowered when it gets really difficult. Also you'll learn to, and how to, avoid imperative code in JS over time. Do use the QML profiler to investigate performance.