On Windows, when I try to do full screen mode in a QGuiApplication window, the title bar disappears
Here is my code :

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

QQmlApplicationEngine engine;
const QUrl url(u"qrc:/Fullscreen/Main.qml"_qs);
QObject::connect(&engine, &QQmlApplicationEngine::objectCreationFailed,
    &app, []() { QCoreApplication::exit(-1); },
    Qt::QueuedConnection);
engine.load(url);

QObject* rootObject = engine.rootObjects().value(0);
QQuickWindow* window = qobject_cast<QQuickWindow*>(rootObject);

if (window)
{
    // Put the window in fullscreen mode
    window->showFullScreen();
}

return app.exec();
}

Is there any way to maintain the titlebar visible (including close, minimize buttons) in full screen mode ?