From: "Glenn M. Lewis" <noSpam@...>
Date: 2005-10-21T12:07:00+09:00
Subject: Ruby/Tk question

Hi all!

	I have an application that pops up a window until someone
closes it, and then pops up another one until someone closes it.
But if I try to open a window the second time, this is what
happens (using Ruby 1.8.2, WinXP Pro SP2, one-click installer):

C:\tmp>irb
irb(main):001:0> require 'tk'
=> true
irb(main):002:0> t = TkRoot.new() { title "yo yo ma" }
=> #<TkRoot:0x2c8f238 @path=".">
irb(main):003:0> text = TkText.new(t)
=> #<TkText:0x2d8c288 @cmdtbl=[], @path=".w00000", @tags={}>
irb(main):004:0> Tk::mainloop
=> true
#
# Here, the window has popped up, and I click on the close button in the upper right...
#
irb(main):005:0> t = TkRoot.new() { title "yo yo ma" }
RuntimeError: can't invoke "wm" command:  application has been destroyed
         from c:/ruby/lib/ruby/1.8/tk.rb:1948:in `__invoke'
         from c:/ruby/lib/ruby/1.8/tk.rb:1948:in `_invoke'
         from c:/ruby/lib/ruby/1.8/tk.rb:1498:in `_ip_invoke_core'
         from c:/ruby/lib/ruby/1.8/tk.rb:1532:in `_tk_call_core'
         from c:/ruby/lib/ruby/1.8/tk.rb:1556:in `tk_call'
         from c:/ruby/lib/ruby/1.8/tk/wm.rb:271:in `title'
         from (irb):5
         from (irb):5:in `instance_eval'
         from c:/ruby/lib/ruby/1.8/tk/root.rb:48:in `instance_eval'
         from c:/ruby/lib/ruby/1.8/tk/root.rb:48:in `new'
         from (irb):5
irb(main):006:0>

	Obviously, I'm doing something silly.  Can anyone tell me what that is?
Thanks!
-- Glenn