On Fri, 15 Sep 2006, Patrick Lynch wrote:

        [...]
> but I'm looking for a good reference that covers Ruby and Tk in greater 

To quote my ruby page [1]:

Resources for Tk include <a href="http://httpd.chello.nl/k.vangelder/ruby/learntk/">Ruby/Tk
    Tutorial</a>; a three part article by Christopher Roach - parts 
1, 
2
and 3;
Ruby-Tk FAQ;
and <a href="http://www.jbrowse.com/text/rubytk_en.html">Ruby/Tk
    classes and Modules</a>.

        HTH
        Hugh

[1] Sorry if that sounds egotistical, it's just that it explains the
    format, and from where I dug out the info.  If you really want
    the url it's http://www.eng.cse.dmu.ac.uk/~hgs/ruby/