gtk-image-set-from-icon-set (image icon-set icon-size)

image -- a gtk-image widget
icon-set -- a gtk-icon-set structure
icon-size -- a stock icon size of type gtk-icon-size

See the gtk-image-new-from-icon-set function for details. The gtk-image-set-from-icon-set function has been deprecated since version 3.10 and should not be used in newly written code. Use the gtk-image-set-from-icon-name function instead.