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QT实现最小化到Icon单击双击显示窗口

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最近在学习用QT开发一个项目,参考了网上的例子完成了一个QT实现最小化到Icon单击双击显示窗口的例子,分享给大家,也感谢大家的网络分享。项目会放在www.pavogroup.top上面,大家可以参考一下。

 

在头文件里面定义bool isIconExist;以避免重复创建多个icon。

void HelpDeskClientDialog::changeEvent(QEvent *event)

{
    if((event->type()==QEvent::WindowStateChange)&&isMinimized())
    {
        hide();
        event->ignore();
        //初始化两个项目
        QSystemTrayIcon* trayIcon = new QSystemTrayIcon(this);
        QAction* showAction = new QAction(QStringLiteral("Display Window"));//项1
        QAction* exitAction = new QAction(QStringLiteral("EXIT"));//项2
        //项1的点击槽函数
        connect(showAction, &QAction::triggered, this, [=]()
        {
            this->show();
        });
        //项2的点击槽函数
        connect(exitAction, &QAction::triggered, this, [=]()
        {
            qDebug()<<"exit";
            QApplication::exit(0);
        });
        connect(trayIcon,SIGNAL(activated(QSystemTrayIcon::ActivationReason)),this,SLOT(on_activatedSysTrayIcon(QSystemTrayIcon::ActivationReason)));
        //初始化菜单并添加项
        QMenu* trayMenu = new QMenu(this);//菜单
        trayMenu->addAction(showAction);
        trayMenu->addAction(exitAction );
        //创建一个系统托盘
        if(isIconExist == true)
        {
            return;
        }
        else
        {
            trayIcon->setIcon(QIcon(":/Icon/bird2.png"));    //设置托盘图标
            trayIcon->setContextMenu(trayMenu);                                     //设置菜单
            trayIcon->setToolTip ("Super HelpDesk");
            trayIcon->show();
            isIconExist = true;
        }
    }
}

void HelpDeskClientDialog::on_activatedSysTrayIcon(QSystemTrayIcon::ActivationReason reason)
{
    switch(reason)
    {
        case QSystemTrayIcon::Trigger:
            //单击托盘图标
            this->showNormal();
            break;
        case QSystemTrayIcon::DoubleClick:
            //双击托盘图标
            //双击后显示主程序窗口
            this->showNormal();
            break;
        default:
            break;
    }
}

标签:QT,单击,trayIcon,QAction,trayMenu,QSystemTrayIcon,new,双击
来源: https://www.cnblogs.com/managechina/p/16548845.html