mathtrainingstuff/sources/main.cpp

#include <QGuiApplication>
#include <QQmlApplicationEngine>
#include "headers/appsettings.h"

int main(int argc, char *argv[])
{
    QCoreApplication::setAttribute(Qt::AA_EnableHighDpiScaling);

    QGuiApplication app(argc, argv);

    qmlRegisterType<AppSettings>("com.max.mathtrainingstuff", 1, 0, "AppSettings");

    QQmlApplicationEngine engine;
    engine.load(QUrl(QStringLiteral("qrc:/main.qml")));
    if (engine.rootObjects().isEmpty())
        return -1;

    return app.exec();
}