class CIMWatch
{
  fstream m_fsLog;
  string m_strBuddyName;
  ....

public:

  // Opens the log file

  bool OpenIMLog();
  // Closes the log file

  void CloseIMLog();
  // Logs the contents of the buffer

  bool Log( string strText );
  ....
};

bool CIMWatch::OpenIMLog()
{
  string strLogName = "Logs\\" + m_strBuddyName + ".txt";

  m_fsLog.open( strLogName.c_str(), ios::app | ios::out );
  if( m_fsLog.fail() )
    return false;

  m_fsLog << "Opening " << strLogName << endl;

  return true;
}

void CIMWatch::CloseIMLog()
{
  if( m_fsLog.is_open() )
    m_fsLog.close();
}

bool CIMWatch::Log( string strText )
{
  if( m_fsLog.is_open() )
  {
    m_fsLog << strText;

    return true;
  }

  return false;
}