main.cpp Example File

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  #include <QQmlApplicationEngine>
  #include <QGuiApplication>
  #include <QCommandLineParser>
  #include <QCommandLineOption>
  #include <QWindow>
  #include <QQmlContext>
  #include <QStandardPaths>
  #include <QDir>

  int main(int argc, char *argv[])
  {
      QGuiApplication::setAttribute(Qt::AA_EnableHighDpiScaling);
      QGuiApplication app(argc, argv);
      QCoreApplication::setApplicationName(QStringLiteral("QuickPlayer"));
      QCoreApplication::setApplicationVersion(QLatin1String(QT_VERSION_STR));
      QCoreApplication::setOrganizationName(QStringLiteral("QtWinExtras"));
      QCoreApplication::setOrganizationDomain(QStringLiteral("qt-project.org"));
      QGuiApplication::setApplicationDisplayName(QStringLiteral("QtWinExtras Quick Player"));

      QQmlApplicationEngine engine;
      const QStringList musicPaths = QStandardPaths::standardLocations(QStandardPaths::MusicLocation);
      const QUrl musicUrl = QUrl::fromLocalFile(musicPaths.isEmpty() ? QDir::homePath() : musicPaths.first());
      engine.rootContext()->setContextProperty(QStringLiteral("musicUrl"), musicUrl);

      QCommandLineParser parser;
      parser.setApplicationDescription(QGuiApplication::applicationDisplayName());
      parser.addHelpOption();
      parser.addVersionOption();
      parser.addPositionalArgument(QStringLiteral("url"), QStringLiteral("The URL to open."));
      parser.process(app);
      QUrl commandLineUrl;
      if (!parser.positionalArguments().isEmpty())
          commandLineUrl = QUrl::fromUserInput(parser.positionalArguments().constFirst(), QDir::currentPath(), QUrl::AssumeLocalFile);
      engine.rootContext()->setContextProperty(QStringLiteral("url"), commandLineUrl);

      engine.load(QUrl(QStringLiteral("qrc:/main.qml")));
      QObject *root = engine.rootObjects().value(0);
      if (QWindow *window = qobject_cast<QWindow *>(root))
          window->show();
      else
          return -1;
      return app.exec();
  }