请教CString 字串中子串的提取．

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请教CString 字串中子串的提取．0040000000010100001010101010101010 10101010101010101010101010080145014500000000000010000008 01450000000000000000000000000000000000000000000000000000 00000000000000000000000000000000000000000063000001B40000 00000000000000000000000000000000000000000000000000000000 00000000000000000000000000000000000000000000000000000000 00000000000000000000000000000000000000000000000000000000 00000000000000000000000000000000000000000000000000000000 000000000031* 我想去前面＂0040000000＂后面＂31*　＂；请问怎么做呀！我

刚开始学ＶＣ＋＋！谢谢！多多指教！

可以了!又有新问题了啊!

我自己做了一个对话框.上有5个从下位机读取数值显示数据,我读取一个数值运行时,显示刷新都OK!F5多个也OK!我读取多个数值运行时!就报错!找不到问题所在.......!

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UpdateData (FALSE);
receiverhandle();
UpdateData (FALSE);

.................................

void CTranscomnDlg::receiverhandle()
{

int k=0;
CString tempstr=m_response.Left(23);
iCount=m_response.GetLength()-4;
m_receivernumber=m_response.GetLength()-27;
if(m_receivernumber<4)
{
  m_receivernumber=0;
}
else
{
  if(tempstr=="@00FA004000000001010000")
  {
   m_irbox=m_response.Mid(23,m_receivernumber);
  }
}
k=m_irbox.GetLength();
if(k>=4)
{
  for(k=0,str=m_irbox;k<m_receivernumber;k+=4)
  {
   switch (k)
   {
   case 0:
    CString_to_int(str.Mid(k,k+4),m_data3);
    break;
   case 4:
    CString_to_int(str.Mid(k,k+4),m_data4);
    break;
   case 8:
    CString_to_int(str.Mid(k,k+4),m_data5);
    break;
   case 12:
    CString_to_int(str.Mid(k,k+4),m_data6);
    break;
   default:
    break;
   }
  }
}

}
void CTranscomnDlg::CString_to_int(CString midx,int& intok)
{
intok=0;
int y,i=4;
char s;
for (int j=0;i>0;j++)
{
  i--;
  s=midx.GetAt(j);
  if(s>='A')
   y=s-'A'+10;
  else
   y=s-'0';
  int bobo=int(pow(16,i));
  intok+=y*bobo;
}

}

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刚开始学ＶＣ＋＋！谢谢！多多指教！