MainWindow

含有 QMenuBar, QToolBar 和 QStatusBar的窗口

QMenuBar

QMenuBar *pMenuBar = menuBar();

QMenu

QMenu *menu = pMenuBar->addMenu("&File");

• 当需要在其他地方使用 menu 时, 可以创建一个 _menu 指针等于 menu

    _menu = menu;

• QAction

    QAction *OpenAction = 
    menu-> addAction("&Open",  // 名字
                     this, 
                     & MyMainWindow::sl_open,   //  处理函数 
                     QKeySequence::Open     //  快捷键 
                     );

QToolBar

QToolBar *toolBar = this->addToolBar("MyToolBar");  
toolBar->addAction(OpenAction);
toolBar->addAction(SaveAction);
toolBar->addAction(ExitAction);

QStatusBar // layout？

QStatusBar * statusBar = this->statusBar();

QSystemTrayIcon

• 系统托盘图标

    _icon = new QSystemTrayIcon();
    _icon->setIcon(QIcon("../favicon.ico"));    
    _icon->setToolTip("This is tray icon test");
    _icon->show();
    _icon->setContextMenu(_menu);   //  点击菜单

• 点击显示隐藏

    connect(_icon,
            &QSystemTrayIcon::activated,
            this,
            & MyMainWindow::sl_iconevent);
  
    void MyMainWindow::sl_iconevent(QSystemTrayIcon::ActivationReason reason)
    {
        if(reason == QSystemTrayIcon::Trigger)
        {
            if(this->isHidden())
                this->show();
            else {
                this->hide();
            }
        }
    }