Qt 系统托盘

写了一个Qt 系统托盘类SystemTray:

用法：

systemTray = new SystemTray(this, ":trayicon/offline");

 

可重写createMenu定制复杂效果。   
运行即可得到一个简易系统托盘和简单响应，效果如下：

使用Linguist翻译成中文[见Qt Linguist用法]，效果如下：

使用qss 设置字体大小(微软雅黑12px) [见Qt qss设置文件]，效果如下：

 

SystemTray类：

.h

#ifndef SYSTEMTRAY_H#define SYSTEMTRAY_H#include <QAction>#include <QMenu>#include <QIcon>#include <QWidget>#include <QSystemTrayIcon>class SystemTray : public QObject{    Q_OBJECTpublic:    explicit SystemTray(QWidget *w, const QString& iconFileName);        void setTrayIcon(const QString &iconFileName);    void setToolTip(const QString &tip);    virtual void retranslate();signals:public slots:    void iconActivated(QSystemTrayIcon::ActivationReason reason);private:    QWidget *widget;    QIcon icon;    QSystemTrayIcon *trayIcon;    QAction *showAction;    QAction *quitAction;protected:    QMenu *trayIconMenu;    virtual void createMenu();private:    void createActions();    void createTrayIcon();};#endif // SYSTEMTRAY_H

.cpp

#include "systemtray.h"#include <QApplication>#include <QCoreApplication>SystemTray::SystemTray(QWidget *w, const QString &iconFileName) :    QObject(), widget(w){    icon = QIcon(iconFileName);    createMenu();    createTrayIcon();    trayIcon->show();    connect(trayIcon, &QSystemTrayIcon::activated, this, &SystemTray::iconActivated);    retranslate();}void SystemTray::createMenu(){    showAction = new QAction(widget);    connect(showAction, &QAction::triggered, widget, &QWidget::showNormal);    quitAction = new QAction(widget);    //connect(quitAction, &QAction::triggered, this, &SystemTray::quitTriggered);// 编译错误    connect(quitAction, &QAction::triggered, &QApplication::quit);// 新的connect写法，允许省略接受者    // 注意：trayIconMenu的父类为desktop，如果为this,则右键单击托盘不选中时，托盘菜单不消失。    trayIconMenu = new QMenu((QWidget*)QApplication::desktop());//    trayIconMenu->setStyleSheet("QMenu{font-size: 12px;}");    trayIconMenu->addAction(showAction);    trayIconMenu->addSeparator();    trayIconMenu->addAction(quitAction);}void SystemTray::retranslate(){    showAction->setText(tr("show"));    quitAction->setText(tr("quit"));}void SystemTray::iconActivated(QSystemTrayIcon::ActivationReason reason){    switch (reason) {    case QSystemTrayIcon::Trigger: // 单击    case QSystemTrayIcon::DoubleClick:// 双击        widget->showNormal();        break;    case QSystemTrayIcon::MiddleClick:        break;    default:        ;    }}void SystemTray::createTrayIcon(){    trayIcon = new QSystemTrayIcon(this);    trayIcon->setContextMenu(trayIconMenu);    trayIcon->setIcon(icon);    trayIcon->setToolTip("Tray tool tip");}void SystemTray::setTrayIcon(const QString &iconFileName){    trayIcon->setIcon(QIcon(iconFileName));}void SystemTray::setToolTip(const QString &tip){    trayIcon->setToolTip(tip);}

 Tips: 注意，在注释的时候，请在// 空格再加注释，能避免解析错误。