VC 状态栏

void CMainFrame::OnTimer(UINT nIDEvent)
{
    CClientDC dc(this);   
    CTime t=CTime::GetCurrentTime();                   
    CString str=t.Format("%H:%M:%S"); 
    CSize sz=dc.GetTextExtent(str);                   
    m_wndStatusBar.SetPaneInfo(3,0,SBPS_NORMAL,sz.cx);  
    m_wndStatusBar.SetPaneText(3,str);

    str = "西安";
    sz= dc.GetTextExtent(str);
    m_wndStatusBar.SetPaneInfo(2,0,SBPS_NORMAL,sz.cx); 
     m_wndStatusBar.SetPaneText(2,str);
 CFrameWnd::OnTimer(nIDEvent);
}