gtk:file-chooser-show-hidden (object)

object -- a gtk:file-chooser widget
setting -- true if hidden files and folders should be displayed

Accessor of the show-hidden slot of the gtk:file-chooser interface. The gtk:file-chooser-show-hidden function gets whether hidden files and folders are displayed in the file selector. The (setf gtk:file-chooser-show-hidden) function sets the property.