gtk:tool-button-label-widget (object)

object -- a gtk:tool-button widget
widget -- a gtk:widget object used as label, or nil

The accessor for the label-widget slot gets or sets the widget used as label on the tool button. If the widget argument is nil the label property is used as label. If label is also nil, the label in the stock item determined by the stock-id property is used as label. If stock-id is also nil, button does not have a label.