Getting Started
If you don't have GTK installed already, you must go to http://www.gtk.org and get it. You can obtain the Gtk bindings for Ruby from the Ruby/Gtk website.
Hello World
To begin our introduction to GTK, we'll start with a simple program. This program will create a window with a button.
require 'gtk'
window = Gtk::Window.new(Gtk::WINDOW_TOPLEVEL)
button = Gtk::Button.new("Hello World")
window.set_title("Hello Ruby")
window.border_width(10)
# Connect the button to a callback.
button.signal_connect('clicked') { puts "Hello Ruby" }
# Connect the signals 'delete_event' and 'destroy'
window.signal_connect('delete_event') {
puts "delete_event received"
false
}
window.signal_connect('destroy') {
puts "destroy event received"
Gtk.main_quit
}
window.add button
window.show_all
Gtk.main |