documented __WXFUNCTION__

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@38281 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

docs/latex/wx/function.tex

@@ -270,6 +270,7 @@ the corresponding topic.
 \helpref{wx\_truncate\_cast}{wxtruncatecast}\\
 \helpref{\_}{underscore}\\
 \helpref{\_T}{underscoret}
+\helpref{\_\_WXFUNCTION\_\_}{wxfunction}
 
 
 
@@ -3331,6 +3332,15 @@ See also \helpref{wxGetResource}{wxgetresource}, \helpref{wxConfigBase}{wxconfig
 <wx/utils.h>
 
 
+\membersection{\_\_WXFUNCTION\_\_}\label{wxfunction}
+
+\func{}{\_\_WXFUNCTION\_\_}{\void}
+
+This macro expands to the name of the current function if the compiler supports
+any of \texttt{\_\_FUNCTION\_\_}, \texttt{\_\_func\_\_} or equivalent variables
+or macros or to \NULL if none of them is available.
+
+
 
 \section{Byte order macros}\label{byteordermacros}