+ /**
+ Returns the sizer containing the given one with a separating
+ wxStaticLine if necessarily.
+
+ This function is useful for creating the sizer containing footer-like
+ contents in dialog boxes. It will add a separating static line only if
+ it conforms to the current platform convention (currently it is not
+ added under Mac where the use of static lines for grouping is
+ discouraged and is added elsewhere).
+
+ @since 2.9.2
+
+ @param sizer The sizer to wrap, must be non-@NULL.
+ @return The sizer wrapping the input one or possibly the input sizer
+ itself if no wrapping is necessary.
+ */
+ wxSizer *CreateSeparatedSizer(wxSizer *sizer);
+