#! /usr/bin/ruby

require 'thread'
require 'gtk2'

def create_main_window
    
    b = Gtk::Button.new("Click me")
    b.signal_connect('clicked') {
        pid = nil
        if pid = fork
            Thread.new {
                id, exitstatus = Process.waitpid2(pid)
                puts "finished with exitstatus #{exitstatus}"
            }
        else
            exec("sleep 3")
        end
    }

    $main_window = Gtk::Window.new
    $main_window.add(b)
    $main_window.window_position = Gtk::Window::POS_CENTER
    $main_window.show_all
end

puts "Using rg2 version #{Gtk::BINDING_VERSION.join('.')}"

Thread.abort_on_exception = true
Gtk.init
create_main_window
Gtk.main