VC保存文件的参考代码

    void CDiaryDlg::OnButtonSave()
    {
    // TODO: Add your control notification handler code here
    // 这种用bSave的方式来判断是否保存过，这样不好，待考虑。

    // if (!bSave)
    {
      int iYear = m_cMonthView.GetYear();
      int iMonth = m_cMonthView.GetMonth();
      int iDay = m_cMonthView.GetDay();

      CString sFileName;
      sFileName.Format("%d-%d-%d.txt", iYear, iMonth, iDay);

      CFileDialog dlg(FALSE, "txt", sFileName,
       OFN_OVERWRITEPROMPT|OFN_HIDEREADONLY,
       "文本文件(*.txt)|*.txt||", this);
      dlg.m_ofn.lpstrTitle = _T("保存日记文件");
      if (dlg.DoModal() == IDOK)
      {
       // 实现存盘
       CString fileName = dlg.GetPathName();
       CFile file(fileName, CFile::modeCreate|CFile::modeReadWrite|CFile::shareExclusive);
       CArchive ar(&file, CArchive::store|CArchive::bNoFlushOnDelete);
       UpdateData(TRUE);
       ar<<m_sComment;
       ar.Close();

       bSave = TRUE;
       m_sFileName = fileName;
      }
    }
    /*
    else
    {
      CFile file(m_sFileName, CFile::modeCreate|CFile::modeReadWrite|CFile::shareExclusive);
      CArchive ar(&file, CArchive::store|CArchive::bNoFlushOnDelete);
      UpdateData(TRUE);
      ar<<m_sComment;
      ar.Close();
    }
    */
    }