m_BoradcastEnd.EnableWindow(FALSE); 
  m_imageList.Create(32,32,ILC_COLOR8,2,2); 
  DWORD dwStyle = m_ListUser.GetExtendedStyle();  
  dwStyle |= LVS_EX_INFOTIP;  
  m_ListUser.SetExtendedStyle(dwStyle);  
   
  for (int i=0; i<5; i++) 
  { 
    CBitmap bit; 
    bit.LoadBitmap(IDB_TEA_ONLINE+i); 
    m_imageList.Add(&bit,RGB(0,0)); 
    bit.DeleteObject(); 
  } 
   
  EnableToolTips(TRUE); 
  m_toolTipCtrl.Create(this); 
  m_toolTipCtrl.SetMaxTipWidth(500);//若屏蔽这行提示信息的格式可能会出现问题，不能换行 
  m_toolTipCtrl.Activate(TRUE);  
  m_ListUser.SetImageList(&m_imageList,TVSIL_NORMAL); 
  m_ListUser.InsertItem(0,"172.16.30.32.231",0); 
  m_ListUser.InsertItem(1,"172.16.30.218",4); 
  CRect rect; 
  m_ListUser.GetItemRect(0,&rect,LVIR_BOUNDS); 
  m_toolTipCtrl.AddTool(&m_ListUser,"MAC:/nHost:/nIP:",1);  
  m_ListUser.GetItemRect(1,"gggggggggg/nggggggggsfgsfgsfg",2); 

BOOL CMutiScreenDlg::PreTranslateMessage(MSG* pMsg)  
{ 
  // TODO: Add your specialized code here and/or call the base class 
  m_toolTipCtrl.RelayEvent(pMsg); 
   
  return CDialog::PreTranslateMessage(pMsg); 
}