loader.rb in gtk3-3.3.2

- old
+ new

@@ -1,6 +1,6 @@
-# Copyright (C) 2014-2018  Ruby-GNOME2 Project Team
+# Copyright (C) 2014-2019  Ruby-GNOME2 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.
@@ -72,9 +72,10 @@
       require "gtk3.so"
     end
 
     def require_libraries
       require "gtk3/gdk-drag-context"
+      require "gtk3/gdk-screen"
 
       require "gtk3/about-dialog"
       require "gtk3/action"
       require "gtk3/action-group"
       require "gtk3/application"