Qt创建托盘————附详细代码

0 效果

何所谓托盘呢？也就是最小化后隐藏到任务栏，效果如下图所示：

1 实现

1.1 .h文件中，声明变量和方法

    //窗口任务栏属性
      QSystemTrayIcon *trayIcon;
      QMenu *trayMenu ;

      void iconActivated(QSystemTrayIcon::ActivationReason);

       QAction *trayShowMainAction;//托盘显示窗口信号发生体
       QAction *trayExitAppAction;//托盘显示窗口信号发生体
       void on_showMainAction();//托盘槽
       void on_exitAppAction();//托盘槽

1.2 初始化托盘：

void initTray()
{
     
    //创建托盘
    this->initTrayIcon();
    connect(trayIcon, &QSystemTrayIcon::activated,
                this, &UIMainWindows::iconActivated);
    //托盘事件
    //显示界面
    connect(trayShowMainAction, &QAction::triggered,
            this, &UIMainWindows::showNormal);
     //退出程序       
     connect(trayExitAppAction, &QAction::triggered,
             this, &UIMainWindows::on_exitAppAction);
    //this->setWindowState((this->windowState() & ~Qt::WindowMinimized) | Qt::WindowActive);
    //设置窗口样式
    this->setWindowFlags(Qt::FramelessWindowHint | Qt::WindowSystemMenuHint | Qt::WindowMinimizeButtonHint);
}

1.3 创建托盘

void initTrayIcon()
{
     
    //判断系统是否支持托盘图标显示
    if(!QSystemTrayIcon::isSystemTrayAvailable())
     {
     
            //qDebug() <<"test";
            return;
      }
    //实例化托盘图标控件
    trayIcon = new QSystemTrayIcon(this);
    trayIcon->setIcon(QIcon(":/image/main_menu.png"));  //设置托盘图标显示
    trayIcon->setToolTip("Calculator"); //显示提示信息

    //创建托盘菜单
   trayShowMainAction = new QAction(tr("显示主界面"),this);
   trayExitAppAction = new QAction(tr("退出"),this);
    trayMenu = new QMenu(this);
    trayMenu ->addAction(trayShowMainAction);//添加事件
    trayMenu ->addSeparator();//添加分割线
    trayMenu ->addAction(trayExitAppAction);
    trayIcon->setContextMenu(trayMenu );//托盘添加菜单

}

1.4 点击事件

void iconActivated(QSystemTrayIcon::ActivationReason reason)
{
     
        switch (reason)
        {
     
        case QSystemTrayIcon::Trigger:
            //trayIcon->showMessage("title","你单击了"); //后面两个默认参数
            trayIcon->showMessage(tr("游戏平台"),
                                      tr("欢迎使用此程序！"),
                                      QSystemTrayIcon::Information,
                                      700);
            break;
        case QSystemTrayIcon::DoubleClick:
            //trayIcon->showMessage("title","你双击了");
            //setVisible(true);
            this->show();
            break;
//        case QSystemTrayIcon::MiddleClick://鼠标中间滚轮
//            trayIcon->showMessage("title","你中键了");
//            break;
        default:
            break;
        }
}

void on_exitAppAction()
{
     
    exit(0);
}