gio:simple-action-enabled (object)

object -- a g:simple-action object
enabled -- a boolean whether the action is enabled

The accessor for the enabled slot of the g:simple-action class gets or sets whether the action is enabled. An action must be enabled in order to be activated or in order to have its state changed from outside callers. This should only be called by the implementor of the action. Users of the action should not attempt to modify its enabled flag.