From: Justin Collins <justincollins@...>
Date: 2008-02-23T02:13:03+09:00
Subject: Re: Ruby/Tk

Isaac Toothyxdip wrote:
> Ok i have a question how come when i press the button it adds one but
> then it doesnt do it again? Does it have to be in some kind of loop?
>
> require 'tk'
> number = 1
> hello = TkRoot.new do
>   title "Hello World"
>   minsize(400,400)
> end
> lbl = TkLabel.new() { justify 'center'
>   text    "#{number}";
>   pack('padx'=>5, 'pady'=>5, 'side' => 'top') }
> TkButton.new() {
>   text "Add 1"
>   command proc { lbl.configure('text'=>"#{number + 1}") }
>   pack('side'=>'right', 'padx'=>10, 'pady'=>10)
> }
> Tk.mainloop
>
> Thanks
>   

It is doing it. It changes the text to number + 1 (that is, 1 + 1) each 
time. If you actually want to change the variable, try

command proc { lbl.configure('text'=>"#{number += 1}") }

-Justin