托盘气泡很长时间才能消失，uTimeout没起到作用

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

02

03

{

04	m_nid.cbSize=sizeof(NOTIFYICONDATA);

05	m_nid.uFlags = NIF_INFO;

06	m_nid.uTimeout = uTimeout;//10s~30s之间,不过好像无效，所以设置个Timer隐藏

07	m_nid.dwInfoFlags = dwInfoFlags;

08	strcpy(m_nid.szInfo,szMsg ? szMsg : _T(""));

09	strcpy(m_nid.szInfoTitle,szTitle ? szTitle : _T(""));

10	BOOL bRet=Shell_NotifyIcon(NIM_MODIFY, &m_nid);

11

12	//如果前面已经设置过这个Timer,则会重新开始计时

13	SetTimer(WM_TIMER_HIDEBALLOON,uTimeout,NULL);

14	return bRet;

15

}

16

17	void CUpdateDlg::OnTimer(UINT nIDEvent)

18

{

19	// TODO: Add your message handler code here and/or call default

20	switch (nIDEvent)

21

{

22	case WM_TIMER_HIDEBALLOON:

23	m_nid.uFlags=NIF_INFO;

24	strcpy(m_nid.szInfo,_T(""));

25	strcpy(m_nid.szInfoTitle,_T(""));

26	Shell_NotifyIcon(NIM_MODIFY, &m_nid);

27	KillTimer(WM_TIMER_HIDEBALLOON);

28

break;

29

default :

30

break;

31

}

32	CDialog::OnTimer(nIDEvent);

33

}