return true to stop event processing, false to let it propagate

Property definitions

	# return true to stop event processing, false to let it propagate
	fun signal(sender: GtkWidget, user_data: nullable Object) is abstract

lib/gtk/v3_4/gtk_core.nit:61,2--62,70

	redef fun signal(sender, data) do notify_observers new ToggleEvent(self)

lib/linux/ui.nit:318,2--73

	redef fun signal(sender, data) do notify_observers new ButtonPressEvent(self)

lib/linux/ui.nit:247,2--78

	redef fun signal(sender, data)
	do
		super

		app.window.on_back_button
	end

lib/linux/ui.nit:259,2--264,4