gtk-sharp 2.10.0.0 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 The end position within the widget for the text that was deleted. An integer for the end position; this character is not included in the deleted text. Property System.Int32 The start position within the widget for the text that was deleted. An integer for the start position.