class virtual viewport_notify :[> `viewport ] Gobject.obj ->
object
..end
val obj : ([> `viewport ] as 'a) Gobject.obj
method private notify : 'b. ('a, 'b) Gobject.property -> callback:('b -> unit) -> GtkSignal.id
method hadjustment : callback:(GData.adjustment -> unit) -> GtkSignal.id
method vadjustment : callback:(GData.adjustment -> unit) -> GtkSignal.id
method shadow_type : callback:(GtkEnums.shadow_type -> unit) -> GtkSignal.id