Creates a #GtkImage displaying a stock icon. Sample stock icon
names are #GTK_STOCK_OPEN, #GTK_STOCK_QUIT. Sample stock sizes
are #GTK_ICON_SIZE_MENU, #GTK_ICON_SIZE_SMALL_TOOLBAR. If the stock
icon name isn’t known, the image will be empty.
You can register your own stock icon names, see
gtk.icon_factory.IconFactory.addDefault and gtk.icon_factory.IconFactory.add.
Creates a #GtkImage displaying a stock icon. Sample stock icon names are #GTK_STOCK_OPEN, #GTK_STOCK_QUIT. Sample stock sizes are #GTK_ICON_SIZE_MENU, #GTK_ICON_SIZE_SMALL_TOOLBAR. If the stock icon name isn’t known, the image will be empty. You can register your own stock icon names, see gtk.icon_factory.IconFactory.addDefault and gtk.icon_factory.IconFactory.add.