#include <QSystemTrayIcon>

QSystemTrayIcon *m_mTray;
m_mTray = new QSystemTrayIcon(this); //声明对象
m_mTray->setToolTip(windowTitle()); //设置提示信息
m_mTray->setIcon(QIcon(SKIN_PIX_PATH(RSC_ICON_TITLEICON)));//设置提示框内嵌图标

connect(m_mTray, SIGNAL(activated(QSystemTrayIcon::ActivationReason)),this, SLOT(iconActivated(QSystemTrayIcon::ActivationReason)));

m_mTray->showMessage(MAKE_STRING(Gui_ERR_MSG_Title), MAKE_STRING(MSG_MKV_CONVER_TRIAL_WARNING), QSystemTrayIcon::Information, 3000);

//参数1：提示框标题; 参数2：提示框内嵌提示信息; 参数3：无图标/警告/提示等小图标(感叹号/问号); 参数4：提示框显示停留时间(3000=3秒)

m_mTray->show();

应用桌面托盘提示框信息