From: Mark Volkmann <volkmann2@...>
Date: 2004-11-15T12:49:41+09:00
Subject: Re: update delay related to TkOptionMenu

----- Original Message ----- 
From: "Hidetoshi NAGAI" <nagai@ai.kyutech.ac.jp>
To: "ruby-talk ML" <ruby-talk@ruby-lang.org>
Sent: Sunday, November 14, 2004 9:04 PM
Subject: Re: update delay related to TkOptionMenu


> 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?

Windows XP SP 2

>> 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)
>
>