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网络聊天系统源代码第6页

更新时间：2009-1-2: 来源：毕业论文

VC++网络聊天系统
while (!m_pRecordset->EndOfFile)
{
  //读用户名
  vFieldValue = m_pRecordset->GetCollect("用户名");
  strFieldValue = (char*)_bstr_t(vFieldValue);
  //判断用户名是否正确
  if (strcmp(strFieldValue, m_MgName) == 0)
  {
   //读密码，判断密码是否正确，如果正确则显示管理页面
   vFieldValue = m_pRecordset->GetCollect("密码");
   strFieldValue = (char*)_bstr_t(vFieldValue);
   if (strcmp(strFieldValue, m_MgPasswd) == 0)
   {
    CManagePage dlg;
    OnCancel();
    dlg.DoModal();
    break;
   }
   //否则提示错误
   else
   {
    MessageBox("密码错误!", "提示", MB_ICONWARNING |MB_OK);
    m_MgPasswd = "";
    GetDlgItem(IDC_PASSWD)->SetFocus();
    return;
   }
  }
  m_pRecordset->MoveNext();
}
}

查看用户界面
实现代码：
UINT RecvThread(LPVOID sock)
{
BOOL IsRun = TRUE;
SOCKET mySocket;
mySocket = (SOCKET)sock;

POSITION pos;
POSITION pos2;
CP2PData temp;
CUserSocket usersocket;
CUserSocket tempsock;
CRoomInfo roominfo;
int listcount;

while(IsRun)
{
  int n_recv;
  char RecvBuffer[1024];
  //接收用户消息
  n_recv = ::recv(mySocket, RecvBuffer, sizeof(RecvBuffer), 0);
  if (n_recv > 0)
  {
   //分割消息，取出标志位
   RecvBuffer[n_recv] = '\0';
   int i = 0;
   char flag[20];
   char *pbuffer = RecvBuffer;
   while(*pbuffer != '\0')
   {
    if(*pbuffer == '~')
     break;
    flag[i] = *pbuffer;
    i++, pbuffer++;
   }
   flag[i] = '\0';
   pbuffer++;
   //用户退出消息处理
   if (strcmp(flag, "USER_QUIT") == 0)
   {
    //查找用户结点
    pos = SocketList.GetHeadPosition();
    listcount = SocketList.GetCount();
    for(int j=0; j<listcount; j++)
    {
     usersocket = SocketList.GetNext(pos);
     if (usersocket.clientsocket == mySocket)
     {
      //找到用户结点
      send(mySocket, RecvBuffer, strlen(RecvBuffer) + 1, 0);
       break;
     }
    }
    if (pos == NULL)
    {
     pos = SocketList.GetHeadPosition();
    }
751com.cn
    {
     SocketList.GetPrev(pos);
    }
    //删除该用户
    SocketList.RemoveAt(pos);
    //设置标志位，让线程结束
    IsRun = FALSE;
   }
   //普通消息处理
   else if (strcmp(flag, "USER_MESSAGE") == 0)
   {
    int len;
    int roomno;
    char *m_pstr;
    char usname[20];
    CString SourceName;
    char sendbuffer[200];

    //查找当前消息的用户
    pos = SocketList.GetHeadPosition();
    listcount =SocketList.GetCount();
    for(int j=0; j<listcount; j++)
    {
     usersocket = SocketList.GetNext(pos);
     if (usersocket.clientsocket == mySocket)
     {
      //找到并记录用户名和房间编号
      SourceName = usersocket.username;
      roomno = usersocket.RoomNo;
      break;
     }
    }
    //查找字符串pbuffer中是否有:
    m_pstr = strchr(pbuffer,':');
    if (m_pstr == NULL)
    {
     //如果为空，则是一般聊天消息
     sprintf(sendbuffer, "%s~%s 说:%s", flag, usersocket.username, pbuffer);

     pos =SocketList.GetHeadPosition();
     for(j=0; j<listcount; j++)
     {
      usersocket = SocketList.GetNext(pos);
      if (usersocket.RoomNo == roomno)
      {
       //向所有在同一聊天室的用户转发消息
       send(usersocket.clientsocket, sendbuffer, strlen(sendbuffer) + 1, 0);
      }
     }
    }
    else
    {
     //不为空，则是密语
     len = strlen(pbuffer) - strlen(m_pstr);
     //取出密语对象用户名