部分程序如下：

void CSCommTestDlg::OnFilestart()

{

    CFile file;

    CFileStatus  filestatus;

//    int flag1=1;//标记

    CString string;

    CString str="";

    CString filestring;

    CString sendstring="";

    if(m_sendfile=="No File!")

        MessageBox("请输入正确的文件名和路径!","错误",MB_ICONERROR);

     else

    {

            if(CFile::GetStatus(m_sendfile,filestatus))

      {

         char  *pfile=m_sendfile.GetBuffer(0);

         file.Open(pfile,CFile::modeRead,NULL);

              file.SeekToBegin();

         TCHAR   pedit;//这里有问题

         int leng=file.GetLength();

          for(int j=0;j<leng;j++)

         {

                file.Rea(&pedit,1);///////////从文件中逐个读取字

         }

         file.SeekToBegin();

         filestring="";

         for (int m=0;m<leng;m++)

                {      

             file.Read(&pedit,1);

                    filestring+=pedit;

               }

               char *str=filestring.GetBuffer(0);

                long k=strlen(filestring);

    for( int filecount=0;filecount<k;filecount=filecount+2)

    {

    int ij=filecount;

    sendstring=str[ij];

    sendstring+=str[ij+1]

          m_ctrlComm.SetOutput(COleVariant(sendstring));

    }

    }

  }

}