qt5-cinematic-experience/main.cpp

#include <QGuiApplication>
#include <QQuickView>

int main(int argc, char* argv[])
{
    QGuiApplication app(argc,argv);
    QQuickView view;
    view.setResizeMode(QQuickView::SizeRootObjectToView);
    view.setSource(QUrl::fromLocalFile(QCoreApplication::applicationDirPath() + QLatin1String("/Qt5_CinematicExperience.qml")));

    const QString lowerArgument = QString::fromLatin1(argv[1]).toLower();
    if (lowerArgument == QLatin1String("--fullscreen")) {
        view.showFullScreen();
    } else {
        view.show();
    }
    return app.exec();
}