the glib.KeyFile to retrieve the page_setup from
the name of the group in the key_file to read, or NULL to use the default name “Page Setup”
the restored gtk.PageSetup
GException on failure. ConstructionException GTK+ fails to create the object.
2.12
Reads the page setup from the group group_name in the key file key_file. Returns a new gtk.PageSetup object with the restored page setup, or NULL if an error occurred.