d202.bmp.txt

Visual C++通信编程实例

if(m_nMode !=MODE_COMMAND)//MODE_DIALING MODE_WAITRING
       return FALSE;
CHAR strTemp[200l;
lstrcpy(strTemp,CMD_ATD);
  lstrc at(strTemp,(LPCTSTR)strDial);
SendAT(strTemp);
retum DetectConnect0;
4)检测连接，具体代码如下：
int CYsATModem::DetectConnect()
 {
                if(m_nMode !=MODE_COMMAND) return FALSE;
ChangeMode(MODE_CONNECTING);
        CHAR strTemp[200l;
Sleep(3000);
DWORD dwRead;
int nErr;
int nRet=FALSE;
Purge(PURGE_ALL);
TRACE("\n Clear W’)；
memset(strTemp,0,200);
nEnAhis_>ReadComm《PBYTE)strTemp,200,&dwRead,DIALTIME_STARI'DIALTIME-INTER);
TRACE(strTemp);
    i“!m_bCD)
    {
    SendAT(CMD_AT);//抒断连接
    Sleep(500);
    Purge(PURGE_ALL);
    ChangeMode(MODE_COMMAND);
    }
    else ChangeMode(MODE_DATA);
    retum m_bCD;
    l
 5)发送AT命令查看Modem是否正常，具体代码如下：
    BOOL CYsATModem::InitModem(UINT nPort,UINT uBaud,int iRingCount,HWND hWnd)
    {
    m_bCD=FALSE;
    m_nRingCount=iRingCount;
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