I've prepared two demo files for download, containing results from running SWIG on wx.h :

1) Header parse tree as Lisp symbolic expressions

The result of
swig -c++ -sexp -includeall -ignoremissing -module demo wx/wx.h
is here
http://www.olivfabric.de/content/on-wxcl.html#dl-swig-sexp-demo

2) Header parse tree as XML

The result of
swig -c++ -xml -includeall -ignoremissing -module demo wx/wx.h
is here
http://www.olivfabric.de/content/on-wxcl.html#dl-swig-xml-demo

Ahoi

(Joerg)