> This is just personal opinion but I'd hate to see the Ruby GUI API
> standardize on anything C++ based. I've used a few C++ UI toolkits and,
> while they all worked, they were just so un-Ruby. Part of the joy of Ruby
is
> that you don't have to start subclassing to get anything done.

Not sure about what  "few C++ UI" toolkits you are talking about,
but the FXRuby bindings even support Ruby specific constructs
like iterators for some tasks.
(http://fxruby.sourceforge.net/)

cheers,
               vruz