Qt之任务栏系统托盘图标

托盘图标，一个自己脑子出现很久的词，可惜自己都没动手去实现。最近看见的，听见的多了，自己也感兴趣就弄弄了，感觉还蛮简单了。

 

贴出效果图：

 

 

 

那么多功能，其实就一个类就搞定了，那就是QSystemTrayIcon

 头文件（主要 1.声明菜单相关动作 2.声明系统托盘对象，以及相关托盘槽函数 3.关闭事件）

 #ifndef SYSTEMTRAYICON_H
 #define SYSTEMTRAYICON_H

 #include
 #include
 #include
 #include
 namespace Ui {
     class SystemTrayIcon;
 }

 class SystemTrayIcon : public QMainWindow
 {
     Q_OBJECT

 public:
     explicit SystemTrayIcon(QWidget *parent = 0);
     ~SystemTrayIcon();

     void CreatTrayMenu();
     void CreatTrayIcon();

     QSystemTrayIcon *myTrayIcon;

     QMenu *myMenu;

     QAction *miniSizeAction;
     QAction *maxSizeAction;
     QAction *restoreWinAction;
     QAction *quitAction;

 private:
     Ui::SystemTrayIcon *ui;

 public slots:
     void iconActivated(QSystemTrayIcon::ActivationReason reason);

 protected:
     void closeEvent(QCloseEvent *event);

 };

 #endif // SYSTEMTRAYICON_H

 

 源文件（1.创建上下文菜单 2.创建系统托盘，实现相关功能）

 #include "SystemTrayIcon.h"
 #include "ui_SystemTrayIcon.h"
 #include
 SystemTrayIcon::SystemTrayIcon(QWidget *parent) :
     QMainWindow(parent),
     ui(new Ui::SystemTrayIcon)
 {
     ui->setupUi(this);

     CreatTrayIcon();
 }

 SystemTrayIcon::~SystemTrayIcon()
 {
     delete ui;
 }

 void SystemTrayIcon::CreatTrayMenu()
 {
     miniSizeAction = new QAction("最小化(&N)",this);
     maxSizeAction = new QAction("最大化(&X)",this);
     restoreWinAction = new QAction("还 原(&R)",this);
     quitAction = new QAction("退出(&Q)",this);

     this->connect(miniSizeAction,SIGNAL(triggered()),this,SLOT(hide()));
     this->connect(maxSizeAction,SIGNAL(triggered()),this,SLOT(showMaximized()));
     this->connect(restoreWinAction,SIGNAL(triggered()),this,SLOT(showNormal()));
     this->connect(quitAction,SIGNAL(triggered()),qApp,SLOT(quit()));

     myMenu = new QMenu((QWidget*)QApplication::desktop());

     myMenu->addAction(miniSizeAction);
     myMenu->addAction(maxSizeAction);
     myMenu->addAction(restoreWinAction);
     myMenu->addSeparator();     //加入一个分离符
     myMenu->addAction(quitAction);
 }

 void SystemTrayIcon::CreatTrayIcon()
 {
     CreatTrayMenu();

     if (!QSystemTrayIcon::isSystemTrayAvailable())      //判断系统是否支持系统托盘图标
     {
         return;
     }

     myTrayIcon = new QSystemTrayIcon(this);

     myTrayIcon->setIcon(QIcon("mytrayIcon.ico"));   //设置图标图片
     setWindowIcon(QIcon("mytrayIcon.ico"));  //把图片设置到窗口上

     myTrayIcon->setToolTip("SystemTrayIcon V1.0");    //托盘时，鼠标放上去的提示信息

     myTrayIcon->showMessage("SystemTrayIcon","Hi,This is my trayIcon",QSystemTrayIcon::Information,10000);



     myTrayIcon->setContextMenu(myMenu);     //设置托盘上下文菜单

     myTrayIcon->show();
     this->connect(myTrayIcon,SIGNAL(activated(QSystemTrayIcon::ActivationReason)),this,SLOT(iconActivated(QSystemTrayIcon::ActivationReason)));
 }

 void SystemTrayIcon::iconActivated(QSystemTrayIcon::ActivationReason reason)
 {
     switch(reason)
     {
     case QSystemTrayIcon::Trigger:

     case QSystemTrayIcon::DoubleClick:
         showNormal();
         break;
     case QSystemTrayIcon::MiddleClick:
         myTrayIcon->showMessage("SystemTrayIcon","Hi,This is my trayIcon",QSystemTrayIcon::Information,10000);
         break;

     default:
         break;
     }
 }

 void SystemTrayIcon::closeEvent(QCloseEvent *event)
 {
     if (myTrayIcon->isVisible())
     {
         myTrayIcon->showMessage("SystemTrayIcon","Hi,This is my trayIcon",QSystemTrayIcon::Information,5000);

         hide();     //最小化
         event->ignore();
     }
     else
         event->accept();
 }