gtkToggleToolButtonNew(show = TRUE)
gtkToggleToolButtonNewFromStock(stock.id)
gtkToggleToolButtonSetActive(object, is.active)
gtkToggleToolButtonGetActive(object)
gtkToggleToolButton(show = TRUE)gtkToggleToolButtonNew to create a new
gtkToggleToolButtonNewFromStock to
create a new gtkToggleToolButton is the equivalent of gtkToggleToolButtonNew.