\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.