gtk:widget-tooltip-text (object)

object -- a gtk:widget object
text -- a string for the text of the tooltip

The accessor for the tooltip-text slot of the gtk:widget class gets or sets the contents of the tooltip. This function will take care of setting the has-tooltip property to true and of the default handler for the "query-tooltip" signal.

See also the tooltip-text property and the gtk:tooltip-set-text function.