d206.bmp.txt

Visual C++通信编程实例

7)挂断连接，进入MODE_COMMAND状态，具体代码如下：
206
BOOL CYsATModem::HangUp0
 {
        if(m_bTestMode)return TRUE;
if(m_nMode==MODE_ UNINITIALIZE) retum TRUE;
／／如果正在连接，发送任意字符，则会中断
if(m_nMode==MODE_CONNECTING)
{
    SendAT(CMD_AT);
    Sleep(500);
l
if( !Purge(PURGE_ALL》 retum FALSE;
if(!Clear(PURGE_ALL》 retum FALSE;
if(m_nMode==MODE_COMMAND) retum TRUE;
if(m nMode==MODE_ UNMODEM) return TRUE;
TCHAR bufferl50J;
DWORD length=0;
if(m_Thread)
{
                      if(WAIT_OBJECT_O ! =WaitForSingleObject(m_Thread->m_hThread,10000》
          {
                                             TerminateThread(m_Thread->m_hThread,- 11) ;
          }
       delete m_Thread;
m_Thread=NULL;
 }
 if(m_nMode !=MODE_DATA) return TRUE;
ResetEvent(m_hConnected);
ChangeMode(lVIODE_COMMAND);
if(!Pruge(PURGE_ALL》
    return FALSE;//牢口错误
Sleep(1000);
，／改变到MODE_COMMAND模式
，／+++不用换行