1#!/usr/bin/env ruby 2require 'tk' 3require 'tkextlib/iwidgets' 4 5cb = Tk::Iwidgets::Checkbox.new 6cb.add('bold', :text=>'Bold') 7cb.add('italic', :text=>'Italic') 8cb.add('underline', :text=>'Underline') 9cb.select('underline') 10cb.pack(:expand=>true, :fill=>:both, :padx=>10, :pady=>10) 11 12Tk.mainloop 13