QT-托盘使用，一看就懂

#include "QtWidgetsApplication1.h" #include <QSystemTrayIcon> #include <QMenu> #include <QIcon> QtWidgetsApplication1::QtWidgetsApplication1(QWidget *parent) : QDialog(parent) { ui.setupUi(this); QMenu *m = new QMenu(this); QIcon icon(u8":/Resouce/托盘.png"); m_pSystemTray = new QSystemTrayIcon(this); m_pSystemTray->setIcon(icon); m_pSystemTray->setToolTip(u8"托盘测试"); m_pMinimumAct = new QAction(u8"最小化", this); connect(m_pMinimumAct, SIGNAL(triggered()), this, SLOT(hide())); m_pMaximumAct = new QAction(u8"最大化", this); connect(m_pMaximumAct, SIGNAL(triggered()), this, SLOT(showMaximized())); m_pRestoreAct = new QAction(u8"恢复窗口", this); connect(m_pRestoreAct, SIGNAL(triggered()), this, SLOT(showNormal())); m_pQuitAct = new QAction(u8"退出", this); connect(m_pQuitAct, SIGNAL(triggered()), qApp, SLOT(quit())); connect(m_pSystemTray, SIGNAL(activated(QSystemTrayIcon::ActivationReason)), this, SLOT(slotActivatedSysTrayIcon(QSystemTrayIcon::ActivationReason))); QMenu *pContextMenu = new QMenu(this); pContextMenu->addAction(m_pMinimumAct); pContextMenu->addAction(m_pMaximumAct); pContextMenu->addAction(m_pRestoreAct); pContextMenu->addSeparator(); pContextMenu->addAction(m_pQuitAct); m_pSystemTray->setContextMenu(pContextMenu); m_pSystemTray->show(); close(); } void QtWidgetsApplication1::closeEvent(QCloseEvent *event) { if (m_pSystemTray->isVisible()) { hide(); m_pSystemTray->showMessage(u8"托盘", u8"该程序托盘正在运行!"); } } void QtWidgetsApplication1::slotActivatedSysTrayIcon(QSystemTrayIcon::ActivationReason reason) { switch (reason) { case QSystemTrayIcon::Trigger: //单击托盘图标 break; case QSystemTrayIcon::DoubleClick: //双击托盘图标 //双击后显示主程序窗口 this->show(); break; default: break; } }