Gtk.Widget.prototype.set_tooltip_text

function set_tooltip_text(text:String):void {
    // Gjs wrapper for gtk_widget_set_tooltip_text()
}

Sets text as the contents of the tooltip. This function will take care of setting Gtk.has-tooltip to true and of the default handler for the Gtk.query-tooltip signal.

See also the Gtk.tooltip-text property and Gtk.Tooltip.prototype.set_text.

Since 2.12