virtual bool Read(wxString& str);
virtual bool Write(wxString& str) const;
#if wxUSE_STREAMS
virtual bool Read(wxInputStream& str);
virtual bool Write(wxOutputStream& str) const;
#endif // wxUSE_STREAMS
virtual bool Read(wxString& str);
virtual bool Write(wxString& str) const;
#if wxUSE_STREAMS
virtual bool Read(wxInputStream& str);
virtual bool Write(wxOutputStream& str) const;
#endif // wxUSE_STREAMS