hello_world.rb in gtk4-4.0.4

- old
+ new

@@ -1,8 +1,8 @@
 #!/usr/bin/env ruby
 #
-# Copyright (C) 2013-2018  Ruby-GNOME2 Project Team
+# Copyright (C) 2013-2022  Ruby-GNOME Project Team
 #
 # This library is free software; you can redistribute it and/or
 # modify it under the terms of the GNU Lesser General Public
 # License as published by the Free Software Foundation; either
 # version 2.1 of the License, or (at your option) any later version.
@@ -14,33 +14,33 @@
 #
 # You should have received a copy of the GNU Lesser General Public
 # License along with this library; if not, write to the Free Software
 # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 
-# example from https://github.com/GNOME/gtk/blob/master/examples/hello-world.c
+# example from https://gitlab.gnome.org/GNOME/gtk/blob/main/examples/hello/hello-world.c
 
 require_relative "utils"
 
 require_gtk4
 
 application = Gtk::Application.new("org.gtk.example", :flags_none)
 
 application.signal_connect "activate" do |app|
-  win = Gtk::ApplicationWindow.new(app)
-  win.title = "window"
-  win.set_default_size(200, 200)
+  window = Gtk::ApplicationWindow.new(app)
+  window.title = "Window"
+  window.set_default_size(200, 200)
 
-  button_box = Gtk::ButtonBox.new(:horizontal)
-  win.add(button_box)
+  button = Gtk::Button.new(label: "Hello World")
+  button.halign = :center
+  button.valign = :center
 
-  button = Gtk::Button.new(:label => "Hello World")
   button.signal_connect "clicked" do
     puts "Hello World"
-    win.destroy
+    window.destroy
   end
 
-  button_box.add(button)
+  window.child = button
 
-  win.show
+  window.show
 end
 
 application.run