The gfile property of type g-file (Read / Write / Construct Only) The g-file used by the gtk-app-chooser-dialog. The dialog's gtk-app-chooser-widget content type will be guessed from the file, if present.
heading
The heading property of type g-string (Read / Write)
The text to show at the top of the dialog. The string may contain Pango markup. Default value: nil
Note that gtk-app-chooser-dialog does not have any interesting methods
of its own. Instead, you should get the embedded gtk-app-chooser-widget using the function gtk-app-chooser-dialog-widget and call its methods if the gtk-app-chooser interface is not sufficient for your needs.