Method GTK2.IconFactory()->lookup()

Method lookup: GTK2.IconSet lookup(string stock_id)
Description: Looks up stock_id in the icon factory, returning an icon set if found, otherwise 0. For display to the user, you should use GTK2.Style->lookup_icon_set() on the GTK2.Style for the widget that will display the icon, instead of using this function directly, so that themes are taken into account.