在下列地方报错。  这是 怎么回事??BEGIN_MESSAGE_MAP(CClientThread, CWinThread)
//{{AFX_MSG_MAP(CClientThread)
// NOTE - the ClassWizard will add and remove mapping macros here.
ON_THREAD_MESSAGE(MYTM_KILL, OnKill)
ON_THREAD_MESSAGE(MYTM_SEND, OnSend)
//}}AFX_MSG_MAP
END_MESSAGE_MAP()