Qt Quick Subscription

 // Copyright (C) 2017 The Qt Company Ltd.
 // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause

 #include <QtQml/qqmlapplicationengine.h>
 #include <QtGui/qguiapplication.h>

 using namespace Qt::StringLiterals;

 int main(int argc, char *argv[])
 {
     QGuiApplication app(argc, argv);
     QQmlApplicationEngine engine;

     QObject::connect(
             &engine, &QQmlApplicationEngine::objectCreationFailed, &app,
             []() { QCoreApplication::exit(EXIT_FAILURE); }, Qt::QueuedConnection);

     engine.loadFromModule(u"subscription"_s, u"Main"_s);

     return QGuiApplication::exec();
 }