// Copy to data
virtual void Copy(wxVariantData& data) = 0;
virtual bool Eq(wxVariantData& data) const = 0;
+#if wxUSE_STD_IOSTREAM
virtual bool Write(ostream& str) const = 0;
+#endif
virtual bool Write(wxString& str) const = 0;
+#if wxUSE_STD_IOSTREAM
virtual bool Read(istream& str) = 0;
+#endif
virtual bool Read(wxString& str) = 0;
// What type is it? Return a string name.
virtual wxString GetType() const = 0;