gtk:tool-button-stock-id (object)

object -- a gtk:tool-button widget
stock-id -- a string for the name of a stock item, or nil

The accessor for the stock-id slot gets or sets the name of the stock item. The stock-id property only has an effect if not overridden by non-nil label, icon-name, and icon-widget properties. This function has been deprecated since version 3.10 and should not be used in newly written code. Use the gtk:tool-button-icon-name function instead.