Update README

Yuhang Zhao

2024-05-28 79c0602a1f0d80e5babe5f0f0b514189b6823540

 examples/mainwindow/main.cpp

@@ -19,6 +19,7 @@
        Qt::HighDpiScaleFactorRoundingPolicy::PassThrough);
#endif

    QGuiApplication::setAttribute(Qt::AA_DontCreateNativeWidgetSiblings);
    QApplication a(argc, argv);

#if 0 && defined(Q_OS_WINDOWS) && QT_VERSION < QT_VERSION_CHECK(6, 0, 0)
@@ -32,5 +33,10 @@

    MainWindow w;
    w.show();

#if 0
    QMainWindow w2;
    w2.show();
#endif
    return a.exec();
}
}