#include <QApplication>
#include <QStyle>
#include <QStyleFactory>
#include <QWidget>
#include <QGridLayout>
#include <QMenuBar>

int main(int argc, char *argv[])
{
    QApplication *app = new QApplication(argc, argv);

    // case use  override style to fusion
    {
        QStyle *style = QStyleFactory::create("fusion");
        QApplication::setStyle(style);
    }

    QWidget *widget = new QWidget;
    widget->setWindowTitle("QMenuBar QMenu Win11 test");
    widget->setMinimumSize(640, 480);

    QGridLayout *frm = new QGridLayout(widget);

    // case use  native menu bar
    QMenuBar *menubar = new QMenuBar();
    menubar->setNativeMenuBar(true);
#ifdef Q_OS_WIN
    {
        QStyle *style = QStyleFactory::create("windows11");
        menubar->setStyle(style);
    }
#endif
    frm->setMenuBar(menubar);

    // issue  broken menu  is all white in dark mode
    QMenu *menu = new QMenu(menubar);
    menu->setTitle("Menu");
#ifdef Q_OS_WIN
    {
        QStyle *style = QStyleFactory::create("windows11");
        menu->setStyle(style);
    }
#endif
    menubar->addMenu(menu);

    {
        QAction *action = new QAction(menu);
        action->setText("Item 1");
        menu->addAction(action);
    }
    {
        QAction *action = new QAction(menu);
        action->setText("Item 2");
        menu->addAction(action);
    }

    // issue  CRASH
    // note   not reproducible with this example
    QMenu *submenu = new QMenu(menu);
    submenu->setTitle("Submenu");
#ifdef Q_OS_WIN
    {
        QStyle *style = QStyleFactory::create("windows11");
        submenu->setStyle(style);
    }
#endif
    menu->addMenu(submenu);

    {
        QAction *action = new QAction(submenu);
        action->setText("Item 1");
        submenu->addAction(action);
    }
    {
        QAction *action = new QAction(submenu);
        action->setText("Item 2");
        submenu->addAction(action);
    }

    frm->addWidget(new QWidget());
    widget->setLayout(frm);

    widget->show();

    return app->exec();
}