+ // override wxItemContainer::IsSorted
+ virtual bool IsSorted() const { return HasFlag(wxCB_SORT); }
+
+protected:
+ // The generic implementation doesn't determine the height correctly and
+ // doesn't account for the width of the arrow but does take into account
+ // the string widths, so the derived classes should override it and set the
+ // height and add the arrow width to the size returned by this version.
+ virtual wxSize DoGetBestSize() const;
+