From: Peter Hickman <peter@...>
Date: 2005-11-26T01:59:55+09:00
Subject: Re: Mac OS X TK

I tried the following on my Powerbook, 10.4.3. I believe that I have run 
the patch and rebuild thingy you need to do to get gem / rails to work.

irb> require 'tk'
irb> root = TkRoot.new() { title "Hello, world!" }
irb> Tk.mainloop()

This works, ie pops up a window, from both the normal Terminal.app and 
from xterm under X11.