button.text is a
stock ID) and sets things up so that clicking the button will emit the
gtkDialogResponse signal with the given response.id. The button is
appended to the end of the dialog's action area. The button widget is
returned, but usually you don't need it.gtkDialogAddButton(object, button.text, response.id)objectbutton.textresponse.idGtkWidget] the button widget that was added