MFC实现在文件尾追加数据的方法

BOOL CDelDlg::WritetoFile(CString sValue)
{
  CString sFile = GetExePath() + "\\1.log";
  CStdioFile file;
  if(file.Open(sFile, CFile::modeCreate | CFile::modeWrite | CFile::modeNoTruncate))
  {
    file.SeekToEnd(); // 移动文件指针到末尾
    file.WriteString(sValue);
    file.Close();
  }
  return FALSE;
}

// 返回可执行文件所在的目录(不包含最后的'\')
CString GetExePath()
{
  char sFileName[256] = {0};
  CString sPath = _T("");
  GetModuleFileName(AfxGetInstanceHandle(), sFileName, 255);
  sPath.Format("%s", sFileName);
  int pos = sPath.ReverseFind('\\');
  if(pos != -1)
    sPath = sPath.Left(pos);
  else
    sPath = _T("");
  return sPath;
}