Introducing the GTK2KeyPress gem

#!/usr/bin/env ruby

# file: keypress_event.rb

require 'gtk2'
require 'gtk2keypress'

window = Gtk::Window.new

window.add(Gtk::Label.new("Press Key!"))

key = Gtk2KeyPress.new window

def key.on_keydown(e)
  puts 'key down ' + e.name
end

def key.on_keyup(e)
  puts 'key up ' + e.name
end

window.set_default_size(100, 100).show_all

Gtk.main

The above example demonstrates using the gtk2keypress gem within a GTK2 application. When a key is pressed down or up the on_keydown or on_keyup event is triggered.

Resources

Capturing a key press event in a GTK2 application http://www.jamesrobertson.eu/snippets/2016/feb/04/capturing-a-key-press-event-in-a-gtk2-application.html

gtk2 gtk2keypress gem event trigger