void CTestDlg::OnClose()

{

    ShowWindow(SW_HIDE);

    if (!m_bHideNoticeInfo)

    {

        ShowBalloonTip(_T("程序已最小化到托盘"), _T(""), , );

        m_bHideNoticeInfo = true;

    }

}

BOOL CTestDlg::ShowBalloonTip(LPCTSTR szMsg, LPCTSTR szTitle, UINT uTimeout, DWORD dwInfoFlags)

{

    m_nId.uTimeout = uTimeout;

    m_nId.dwInfoFlags = dwInfoFlags;

    strcpy_s(m_nId.szInfo, sizeof(m_nId.szInfo), szMsg ? szMsg : _T(""));

    strcpy_s(m_nId.szInfoTitle, sizeof(m_nId.szInfoTitle), szTitle ? szTitle : _T(""));

    return Shell_NotifyIcon(NIM_MODIFY, &m_nId);

}