全局函数退出问题

void CTaskBarDlg::UpdateChannel(CDatabase *pdb)
{
    int size=m_comm.GetSize();
    while(size--)
    {
        delete m_comm.GetAt(size);
    }
    m_comm.RemoveAll();

    CChannelSet comset(pdb);
    CChannelSingle *pchannel;
    comset.m_strSort = "ID";

    if (comset.Open())
    {
        while (!comset.IsEOF())
        {
            CHANNEL channel;
            memset(&channel,0,sizeof(CHANNEL));
            strcpy(channel.m_name,comset.m_name);
            channel.m_ID = comset.m_ID;
            channel.m_comm = comset.m_ComPort;
            channel.m_baud = comset.m_Baud;
            channel.m_stipulations_ID = comset.m_Protocol;
            CString bbmm;//=commset.m_name;
            bbmm.Format("%02d:",comset.m_ID);
            bbmm+=comset.m_name;
            m_pdatagram->m_ComboxChannel.AddString(bbmm);
            m_pdatagram->m_ComboxChannel.SetCurSel(0);
            pchannel = new CChannelSingle(&channel,this);
            pchannel->InitPort();
            m_comm.Add(pchannel);
            comset.MoveNext();
        }
        comset.Close();
    }
}//请问此函数中NEW的pchannel指针该如何释放，在哪释放？？
BOOL CChannelSingle::InitPort()
{
m_pThread = AfxBeginThread(CommProc,this,THREAD_PRIORITY_NORMAL,0,
                                CREATE_SUSPENDED,NULL) ;
｝
UINT CommProc(LPVOID pParam)
{
｝//请教高手程序退出时此进程该如何退出？？
    目前由于没有关闭此线程程序退出时老是报错