Qt菜单栏显示出现问题

Question

Qt 的菜单栏显示出问题，堆在右上角，需要怎么解决呢？

    this->mMenuBar = new QMenuBar(this);
    QMenu *menuMenu = this->mMenuBar->addMenu("菜单");
    QMenu *aboutMenu = this->mMenuBar->addMenu("关于");

    // 添加具体的菜单功能
    QAction *someAction = menuMenu->addAction("或许有菜单");
    connect(someAction, &QAction::triggered, this, &Widget::onSomeActionTriggered);
    QAction *aboutToolAction = aboutMenu->addAction("关于软件");
    connect(aboutToolAction, &QAction::triggered, this, &Widget::OnAboutToolActionTriggered);
    QAction *aboutAuthorAction = aboutMenu->addAction("关于作者");
    connect(aboutAuthorAction, &QAction::triggered, this, &Widget::onAboutAuthorActionTriggered);

    // 设置菜单栏的高度为固定的19像素
    QString styleSheet = QString("QMenuBar { height: %1px; }").arg(19);
    this->mMenuBar->setStyleSheet(styleSheet);

    // 将菜单放入布局中
    QVBoxLayout *layout = new QVBoxLayout(this);
    layout->setMenuBar(this->mMenuBar);
    setLayout(layout);

Answer 1

把布局去掉试试看