main.cpp

#include <QGuiApplication>
#include <QQmlApplicationEngine>

int main(int argc, char *argv[])
{
    qputenv("QT_LOGGING_RULES", "qt.qml.connections=false");

    QGuiApplication app(argc, argv);

    QQmlApplicationEngine engine;
    const QUrl url(QStringLiteral("qrc:/main.qml"));
    QObject::connect(
        &engine, &QQmlApplicationEngine::objectCreated, &app,
        [url](QObject *obj, const QUrl &objUrl) {
            if (!obj && url == objUrl)
                QCoreApplication::exit(-1);
        },
        Qt::QueuedConnection);

    engine.addImportPath(QCoreApplication::applicationDirPath() + "/qml");
    engine.addImportPath(":/");

    engine.load(url);

    if (engine.rootObjects().isEmpty()) {
        return -1;
    }

    return app.exec();
}

//#include <QGuiApplication>
//#include <QQmlApplicationEngine>


//int main(int argc, char *argv[])
//{
//#if QT_VERSION < QT_VERSION_CHECK(6, 0, 0)
//    QCoreApplication::setAttribute(Qt::AA_EnableHighDpiScaling);
//#endif
//    QGuiApplication app(argc, argv);

//    QQmlApplicationEngine engine;
//    const QUrl url(QStringLiteral("qrc:/main.qml"));
//    QObject::connect(&engine, &QQmlApplicationEngine::objectCreated,
//        &app, [url](QObject *obj, const QUrl &objUrl) {
//            if (!obj && url == objUrl)
//                QCoreApplication::exit(-1);
//        }, Qt::QueuedConnection);
//    engine.load(url);

//    return app.exec();
//}