Description Browse the available stock icons in the list of stock IDs found here. You can also use the gtk-demo application for this purpose. An icon factory manages a collection of GtkIconSet; a GtkIconSet manages a set of variants of a particular icon (i.e. a GtkIconSet contains variants for different sizes and widget states). Icons in an icon factory are named by a stock ID, which is a simple string identifying the icon. Each GtkStyle has a list of GtkIconFactory derived from the current theme; those icon factories are consulted first when searching for an icon. If the theme doesn't set a particular icon, GTK+ looks for the icon in a list of default icon factories, maintained by gtk_icon_factory_add_default() and gtk_icon_factory_remove_default(). Applications with icons should add a default icon factory with their icons, which will allow themes to override the icons for the application. To display an icon, always use gtk_style_lookup_icon_set() on the widget that will display the icon, or the convenience function gtk_widget_render_icon(). These functions take the theme into account when looking up the icon to use for a given stock ID. GtkIconFactory as GtkBuildable GtkIconFactory supports a custom <sources> element, which can contain multiple <source> elements. The following attributes are allowed: stock-id The stock id of the source, a string. This attribute is mandatory filename The filename of the source, a string. This attribute is optional icon-name The icon name for the source, a string. This attribute is optional. size Size of the icon, a GtkIconSize enum value. This attribute is optional. direction Direction of the source, a GtkTextDirection enum value. This attribute is optional. state State of the source, a GtkStateType enum value. This attribute is optional.