Forwards the current event of this @controller to a @widget.
This function can only be used in handlers for the
[signal@Gtk.EventControllerKey::key-pressed],
[signal@Gtk.EventControllerKey::key-released]
or [signal@Gtk.EventControllerKey::modifiers] signals.
Forwards the current event of this @controller to a @widget.
This function can only be used in handlers for the [signal@Gtk.EventControllerKey::key-pressed], [signal@Gtk.EventControllerKey::key-released] or [signal@Gtk.EventControllerKey::modifiers] signals.