QSystemTrayIcon *trayIcon=new QSystemTrayIcon();
QMenu *menu=new QMenu("title",this);
menu->addAction("item 1");
menu->addAction("item 2");
trayIcon->setContextMenu(menu);
trayIcon->setIcon(QIcon("D:\\sitelogo.png"));
trayIcon->show();
trayIcon->showMessage("Title","Hi Im here !");