CStdioFile - Can't read what I have just written

Hello,

I have a program that uses a text file for configuration. In my program
there is a meny where the user can change the configuration. the
configuration is written to a text file using CStdioFile, e.g.

    CStdioFile f;

    BOOL brc = f.Open(m_filepath,CFile::modeCreate |
CFile::modeWrite|CFile::typeText);
    if (brc)
    {
        // OffsetX
        c_offsetX.GetWindowText(value);
        buf.Format(_T("OffsetX=%s\n"),value);
        f.WriteString(buf);
    <snipped a number of simular code>
        f.Flush();
        f.Close();
    }

Then in a another part of the program I read this text file:
        CStdioFile f;
        BOOL brc = f.Open(fpath,CFile::modeRead|CFile::typeText);
        if (brc)
        {
            CString buf,key,value;
            int pos=0;

            // OffsetX
            f.ReadString(buf);
            key = buf.Tokenize(_T("="),pos);
            value = buf.Tokenize(_T("="),pos);
            m_offsetX = _tstof(value);
        <snipped a number of simular code>
            f.Close();
        }

My problem is that when I have changed a value, using the first code, the
changes will not be read by the second code! If I restart my program then
it will read the changes!

I thought that this was Windows buffering the file when I'm writing to it,
but Flush() should take care of that.

Is there something I need to do to stop windows from buffering the file
when reading?

// Anders
--
English is not my first, or second, language
so anything strange, or insulting, is due to
the translation.
Please correct me so I may improve my English!