Qt之程序最小化托盘显示及操作

#include "dialog.h" #include "ui_dialog.h" #include<QSystemTrayIcon> #include<QMenu> #include<QAction> Dialog::Dialog(QWidget *parent) : QDialog(parent), ui(new Ui::Dialog) { ui->setupUi(this); mSysTrayIcon=0; } Dialog::~Dialog() { delete ui; } void Dialog::createMenu() { mMenu = new QMenu(this); mMenu->addAction(mShowMainAction); mMenu->addSeparator(); mMenu->addAction(mExitAppAction); mSysTrayIcon->setContextMenu(mMenu);//右键点击触发上下文菜单 } void Dialog::createActions() { mShowMainAction = new QAction(QObject::trUtf8("显示主界面"),this); connect(mShowMainAction,SIGNAL(triggered()),this,SLOT(on_showMainAction())); mExitAppAction = new QAction(QObject::trUtf8("退出"),this); connect(mExitAppAction,SIGNAL(triggered()),this,SLOT(on_exitAppAction())); } void Dialog::on_pushButton_clicked() { //隐藏主窗口 this->hide(); //新建QSystemTrayIcon对象 if(!mSysTrayIcon) { mSysTrayIcon = new QSystemTrayIcon(this); //建立托盘操作的菜单 createActions(); createMenu(); } //新建托盘要显示的icon QIcon icon = QIcon(":/app.png"); //将icon设到QSystemTrayIcon对象中 mSysTrayIcon->setIcon(icon); //当鼠标移动到托盘上的图标时，会显示此处设置的内容 mSysTrayIcon->setToolTip(QObject::trUtf8("测试系统托盘图标")); //给QSystemTrayIcon添加槽函数 connect(mSysTrayIcon,SIGNAL(activated(QSystemTrayIcon::ActivationReason)),this,SLOT(on_activatedSysTrayIcon(QSystemTrayIcon::ActivationReason))); //在系统托盘显示此对象 mSysTrayIcon->show(); } void Dialog::on_activatedSysTrayIcon(QSystemTrayIcon::ActivationReason reason) { switch(reason) { //显示消息球，1s后自动消失 //第一个参数是标题 //第二个参数是消息内容 //第三个参数图标 //第四个参数是超时毫秒数 case QSystemTrayIcon::Trigger://鼠标单击 mSysTrayIcon->showMessage(QObject::trUtf8("Message Title"), QObject::trUtf8("欢迎使用此程序"), QSystemTrayIcon::Information, 1000); break; case QSystemTrayIcon::DoubleClick://鼠标双击 this->show(); break; default: break; } } void Dialog::on_showMainAction() { this->show();//显示应用程序对话框 } void Dialog::on_exitAppAction() { exit(0);//退出应用程序 }