From: Hidetoshi NAGAI <nagai@...>
Date: 2012-09-04T15:55:14+09:00
Subject: Re: updating tk tablelist support?

From: "Fred L." <lists@ruby-forum.com>
Subject: updating tk tablelist support?
Date: Thu, 30 Aug 2012 17:24:36 +0900
Message-ID: <d52e989b4f8c7745eb0ec01bfd935ccc@ruby-forum.com>

> in tkextlib\tcllib there is the "tablelist" package that I found
> interesting and will try to use in my next personal work/learning
> program.
> the ruby interface files seems to be for an older version than what is
> available here : http://www.nemethi.de/

I think that there is no relation between it and tcllib(tklib) version
of 'tablelist'.
You have to control tcl interpreter directly (by Tk.tk_call method,
and so on), or write your own wrapper library.

For example, when you want to use a widget object which is created by
'::tk::foowidget' tcl command and whose tcl classname is 'FooWidget',
an example of minimum definition of a wrapper class is
-----------------------------------------
class MyFooWidget < TkWindow
  TkCommandNames = ['tk::foowidget'.freeze].freeze
  WidgetClassName = 'FooWidget'.freeze
  WidgetClassNames[WidgetClassName] ||= self
end
-----------------------------------------
Then, you can use a MyFooWdiget widget object with Ruby/Tk's standard
methods for widget objects (e.g. 'foo_widget = MyFooWidget.new(...){ ... }', 
'foo_widget.pack(...)', 'foo_widget.foo_optkey = ...', and so on).

Of course, the wrapper has no special methods for the widget class.
So, when you want to use a a subcommand of the widget "bar opt ...",
for example, you must call 'foo_widget.tk_send("bar", opt, ...)'.

Please check library files under "<rubylib>/tkextlib".
Those are examples of how to write wrapper libraries. 
-- 
Hidetoshi NAGAI (nagai@ai.kyutech.ac.jp)
Department of Artificial Intelligence, Kyushu Institute of Technology