gtk:file-chooser-extra-widget (object)

object -- a gtk:file-chooser widget
extra-widget -- a gtk:widget widget for extra options

Accessor of the extra-widget slot of the gtk:file-chooser interface. The gtk:file-chooser-extra-widget function gets the application supplied widget to provide extra options to the user. The (setf gtk:file-chooser-extra-widget) function sets the widget.