gio:application-action-group (object)

object -- a g:application instance
group -- a g:action-group instance, or nil

The accessor for the action-group slot of the g:application class sets the group of actions that the application exports. This used to be how actions were associated with a g:application instance. Now there is the g:action-map interface for that. The g:application-action-group function has been deprecated since version 2.32 and should not be used in newly written code. Use the g:action-map interface instead. Never ever mix use of this API with use of the g:action-map interface on the same application or things will go very badly wrong. This function is known to introduce buggy behaviour, that is, signals not emitted on changes to the action group.