Forum: wxRuby Missing Config* and FileHistory classes

[versions:]
wxruby (2.0.1 x86-mingw32)
ruby 1.8.7 (2010-01-10 patchlevel 249) [i386-mingw32]

I am thoroughly enjoying using WxRuby to design a GUI for my
application.  It seems to be missing a few pieces of the framework.  In
particular, I cannot find the Config* classes or the FileHistory class.
I see them in the documentation (e.g.
http://wxruby.rubyforge.org/doc/configbase.html), but I can't find them
in the code.  In particular,

  p Wx.constants.find_all {|const| const[0] == 67}

at an IRB prompt doesn't include any of the Config* classes.

Are these classes superseded or available some other way?  'grep' shows
similar strings in wxruby.so, but I can't seem to get at them.

Thanks!

---
Ryan Hinton
L-3 Communications / Communication Systems West
ryan.w.hinton@L-3com.com