写入TXT换行的问题

一个小东西纠结了我好久.......

    CString m_strColINfoFilePath = L"C:\\Documents and Settings\\abin\\桌面\\测试.txt";
    FILE *fr_ColOut;    
    CString strLineVal2;
    strLineVal2.Format(L"%s\t%s\r\n",
        L"序号",
        L"时间");
    fr_ColOut = _wfopen(m_strColINfoFilePath,L"wt,ccs=UNICODE");
    unsigned short head = 0xFEFF;
    fseek(fr_ColOut,0L,SEEK_SET );
    fwrite(&head,sizeof(head),1,fr_ColOut);
    fputws(strLineVal2,fr_ColOut);
    fputws(strLineVal2,fr_ColOut);
    fflush (fr_ColOut);
    fclose(fr_ColOut);