Using C++ classes as QML components

In the next exercise, we will implement a car dashboard that can be used in a racing game and will show a number of parameters such as current speed and motor revolutions per minute. The input data will be provided by a C++ object. We'll see how to include this object into the QML object tree and use property bindings to implement the dashboard.

The final result will look similar to the following:

Time for action – Self-updating car dashboard

We will start with the C++ part. Set up a new Qt Quick application. This will generate the main function for you that instantiates QGuiApplication and QQmlApplicationEngine and sets them up to load a QML document.

Use the File menu to...