C / C++ / MFC

<br />
CString    str;<br />
    str.Format("%s","risking");<br />
    UINT    CtrlCode;<br />
    CtrlCode=USER_NAME;<br />
    m_pClientSocket->SetSendData(CtrlCode,str,3,1);<br />
    m_pClientSocket->SendData();<br />
//    Sleep(100);<br />
    CtrlCode=USER_PASSWORD;<br />
    m_pClientSocket->SetSendData(CtrlCode,str,3,2);<br />
    m_pClientSocket->SendData();<br />
//    Sleep(100);<br />
    CtrlCode=USER_LOGIN_END;<br />
    str="";<br />
    m_pClientSocket->SetSendData(CtrlCode,str,3,2);<br />
    m_pClientSocket->SendData();<br />

<br />
void CClientSocket::SendData()<br />
{<br />
    CCommand    cmd;<br />
    cmd.m_CtrlCode=m_CtrlCode;<br />
    cmd.m_DataStr=m_DataStr;<br />
    cmd.m_CurrentData=m_CurrentData;<br />
    cmd.m_TotalData=m_TotalData;<br />
    cmd.Serialize(*m_pArchiveOut);//m_pFile=new CSocketFile(this);<br />
                           //m_pArchiveOut=new CArchive(m_pFile,CArchive::store);<br />
    m_pArchiveOut->Flush();<br />
}<br />

<br />
void CServeSocket::OnReceive(int nErrorCode) <br />
{<br />
    CCommand    cmd;<br />
    do <br />
    {<br />
        cmd.Serialize(*m_pArchiveIn);    <br />
    } while(!m_pArchiveIn->IsBufferEmpty());<br />
    UINT CtrlCode=cmd.m_CtrlCode;<br />
switch(CtrlCode/100)<br />
    {<br />
    case 1:UserLogin(&cmd);<br />
……………….<br />
}<br />
 <br />
void CServeSocket::UserLogin(CCommand *pCmd)<br />
{<br />
    <br />
    switch(pCmd->m_CtrlCode%100)<br />
    {<br />
    case 1:m_LogInUserName=pCmd->m_DataStr;m_LoginDataCount++;<br />
        break;<br />
    case 2:m_LoginUserPwd=pCmd->m_DataStr;m_LoginDataCount++;<br />
        break;<br />
    default:break;<br />
    }<br />
if(m_LoginDataCount>=2)//m_loginDataCount初始化为0<br />
    {<br />
        CCommand    cmd;<br />
        if(m_bLogin=m_DBCtrl.VerifyLogin(m_LogInUserName,m_LoginUserPwd))<br />
        {<br />
            //login successfully<br />
            cmd.m_CtrlCode=USER_LOGIN_SUCCESSFULLY;<br />
            cmd.m_DataStr="You are Welcome!";<br />
        }<br />
        else<br />
        {<br />
            cmd.m_CtrlCode=USER_LOGIN_DENY;<br />
            cmd.m_DataStr="Sorry!You have no privilege to login";<br />
        }<br />
        cmd.m_TotalData=1;<br />
        cmd.m_CurrentData=2;<br />
        <br />
        cmd.Serialize(*m_pArchiveOut);<br />
        m_pArchiveOut->Flush();<br />
        m_LoginDataCount=0;<br />
 <br />
    }<br />
}<br />
 <br />