1#!/usr/bin/env ruby
2require 'tk'
3require 'tkextlib/iwidgets'
4
5om = Tk::Iwidgets::Optionmenu.new(:labelmargin=>5, :labelpos=>:w,
6                                  :labeltext=>"Operating System :")
7
8om.insert('end', 'Unix', 'VMS', 'Linux', 'OS/2', 'Windows NT', 'DOS')
9om.sort_ascending
10om.select('Linux')
11
12om.pack(:padx=>10, :pady=>10)
13
14Tk.mainloop
15