is not seen from the outside of the class - in any case, the result of any
operation on it is the same.
-\subsection{List of reference-counted wxWidgets classes}\label{refcountlist}
\subsection{Object comparison}\label{refcountequality}
The $==$ and $!=$ operators of \helpref{wxWidgets COW objects}{refcountlist}
that you shouldn't care about it.
+\subsection{List of reference-counted wxWidgets classes}\label{refcountlist}
+
The following classes in wxWidgets have efficient (i.e. fast) assignment operators
and copy constructors since they are reference-counted:
\helpref{wxPalette}{wxpalette}\\
\helpref{wxPen}{wxpen}\\
\helpref{wxRegion}{wxregion}\\
-\helpref{wxString}{wxstring}
+\helpref{wxString}{wxstring}\\
+\helpref{wxVariant}{wxvariant}\\
+\helpref{wxVariantData}{wxvariantdata}
Note that the list above reports the objects which are reference-counted in all ports of
wxWidgets; some ports may use this tecnique also for other classes.
\subsection{Make your own reference-counted class}\label{wxobjectoverview}
Reference counting can be implemented easily using \helpref{wxObject}{wxobject}
-and \helpref{wxObjectRefData}{wxobjectrefdata} classes.
+and \helpref{wxObjectRefData}{wxobjectrefdata} classes. Alternatively, you
+can also use the \helpref{wxObjectDataPtr<T>}{wxobjectdataptr} template.
First, derive a new class from \helpref{wxObjectRefData}{wxobjectrefdata} and
put there the memory-consuming data.