gtk-sharp 2.8.0.0 Gtk# is thread aware, but not thread safe; See the Gtk# Thread Programming for details. Event data. The following events invoke delegates which pass event data via this class: GLib.SignalArgs Constructor Public Constructor. Create a new instance with this constructor if you need to invoke a delegate. Property System.Int32 How many units of the specified to delete. a Property Gtk.DeleteType The kind/length of text to delete.