module Viewport:sig
..end
val cast : 'a Gobject.obj -> Gtk.viewport Gtk.obj
module P:sig
..end
module S:sig
..end
val create : Gtk.viewport Gobject.param list -> Gtk.viewport Gtk.obj
val make_params : cont:(([> `viewport ] as 'a) Gobject.param list -> 'b) ->
'a Gobject.param list ->
?hadjustment:Gtk.adjustment Gtk.obj ->
?vadjustment:Gtk.adjustment Gtk.obj ->
?shadow_type:GtkEnums.shadow_type -> 'b