gtk-sharpGtk# is thread aware, but not thread safe; See the Gtk# Thread Programming for details.GLib.SignalArgsEvent data.The event invokes delegates which pass event data via this class.ConstructorPublic Constructor.Create a new instance with this constructor if you need to invoke a delegate.PropertySystem.BooleanWhether or not the mnemonic group acts as a loop.A boolean, true if the group cycles.