Hi, 

From: "Mark Volkmann" <volkmann2 / charter.net>
Subject: Re: update delay related to TkOptionMenu
Date: Mon, 15 Nov 2004 11:39:00 +0900
Message-ID: <042701c4cabc$43bc8ff0$0200a8c0@MarkDesktop>
> Thanks for the suggestion. Unfortunately, that didn't change anything. I 
> still don't see the update to the TkEntry until I click the 
> TkOptionButtonmenu a second time. 

Could you tell me your environment?

> Is there a different event I could bind to instead?

You can use TkVariable.trace. 
For example, 
-----------------------------------------------------------------
require 'tk'

root = TkRoot.new

value_tbl = {
  'Marathon' => 26.2, 
  '10K' => 6.2, 
  'other' => 0, 
}
value_tbl.default = 0

init_val = 'other'
option_var = TkVariable.new(init_val)
entry_var = TkVariable.new(value_tbl[init_val])

w = TkOptionMenubutton.new(root, option_var)
w.insert(init_val, 'Marathon')
w.insert(init_val, '10K')
w.pack

TkEntry.new(root, :textvariable=>entry_var).pack

option_var.trace('w'){
  entry_var.value = value_tbl[option_var.value]
}

Tk.mainloop 
-----------------------------------------------------------------
-- 
                                  Hidetoshi NAGAI (nagai / ai.kyutech.ac.jp)