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Game Programming Using Qt by Lorenz Haas, Witold Wysota

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Time for action – making CarInfo instantiable from QML

First, we will update the QML document to create an instance of CarInfo present in the CarInfo 1.0 module:

import QtQuick 2.0
import CarInfo 1.0

Image {
  source: "dashboard.png"
  
  CarInfo {
    id: carData
    visible: true // make the widget visible
  }
  // ...
}

As for registering CarInfo, it might be tempting to simply call qmlRegisterType on CarInfo and congratulate ourselves for a job well done:

int main(int argc, char **argv) {
  QGuiApplication app(argc, argv);
  QQuickView view;
  qmlRegisterType<CarInfo>("CarInfo", 1, 0, "CarInfo");
  view.setSource(QUrl("qrc://main.qml"));
  view.show();
  return app.exec();
}

In general this would work (yes, it is as simple as that). However, at the time of writing, trying ...

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