definition module Gtk.Tune

from Gtk.State import :: StateT, :: Identity, :: State, :: GtkState, :: GtkM
from Gtk.Types import :: GtkCSSClass, :: GtkMargins
from Gtk.Widgets import :: GtkWidget, class gtkWidget

class tune elem option :: !(GtkM elem) !option -> GtkM elem

(<<@) infixl 2
(<<@) elem option :== tune elem option

instance tune w GtkMargins | gtkWidget w
instance tune w GtkCSSClass | gtkWidget w