CFileException e;

             CFile fileR;

TCHAR szFilePath[_MAX_PATH];

           char tmpbuf[128], ampm[] = "AM";

    _tzset();

    / * Display operating system-style date and time. */

    _strtime( tmpbuf );

    printf( \"OS time:\\t\\t\\t\\t%s\\n\", tmpbuf );

    _strdate( tmpbuf );

           tmpbuf[2]='_';

           tmpbuf[5]='_';

           tmpbuf[8]='.';

           tmpbuf[9]='T';

           tmpbuf[10]='X';

           tmpbuf[11]='T';

           tmpbuf[12]='\\0';

    ::GetModuleFileName(NULL, szFilePath, _MAX_PATH);

           int i=strlen(szFilePath)-1;

           CString strTemp=\"\\\\\";

           while (szFilePath[i--] !=92 && i>0) {

                     if(92 ==(int)szFilePath[i]) break;

                     szFilePath[i]='\0';

           }

           strcat(szFilePath,tmpbuf);

           m_strFileName = szFilePath;

           if(FileExist(m_strFileName)){

                     if( !fileR.Open( m_strFileName,  CFile::modeWrite, &e ) ){

                                m_strFileName =\"\";

                                return TRUE;

                     }

           }else{

                     if( !fileR.Open( m_strFileName, CFile::modeCreate| CFile::modeWrite, &e ) ){

                                m_strFileName =\"\";

                                return TRUE;

                     }

           }

--------------------------------------------------------------------------------------------

Write

                                        CFile fileR;

                                        CFileException e;

                                        if( !fileR.Open( m_strFileName,  CFile::modeWrite, &e ) ){

                                                     return;

                                        }else{

                                                     m_strData = chData;

                           //                        if(m_strData!=\"\")  UpdateData(FALSE);

                                                     fileR.SeekToEnd();

                                                     fileR.Write( m_strData, m_strData.GetLength());

                                                     fileR.Close();

                                        }