Release Notes: This release is compatible with the newest version (2.18) of GtkAda. The package Gtk.Handlers.References now supports explicit unsetting references. Has_Tooltip, Set_Has_Tooltip, and Set_Tip have been added to Gtk.Missed. Gtk.Handlers.Generic_Callback supports signal handlers returning GValue. Gtk.Recent_Manager has been renamed to Gtk.Recent_Manager_Alt to keep it compatible with GtkAda 2.18. Gtk.Object.Checked_Destroy has been added to safely destroy floating widgets. The package Gtk.Recent_Manager_Keys now provides a simplified means to store and restore values by key and contents of combo boxes.