(**************************************************************************) (* Lablgtk - Examples *) (* *) (* There is no specific licensing policy, but you may freely *) (* take inspiration from the code, and copy parts of it in your *) (* application. *) (* *) (**************************************************************************) module C = Gobject.Closure let add_closure argv = Printf.eprintf "invoking overridden ::add closure, %d args, " argv.C.nargs ; let typ = C.get_type argv 1 in Printf.eprintf "widget %s\n" (Gobject.Type.name typ) ; flush stderr ; GtkSignal.chain_from_overridden argv let derived_frame_name = "GtkFrameCaml" let derived_frame_gtype = lazy begin let parent = Gobject.Type.from_name "GtkFrame" in let t = Gobject.Type.register_static ~parent ~name:derived_frame_name in GtkSignal.override_class_closure GtkBase.Container.S.add t (C.create add_closure) ; t end let create_derived_frame = GtkBin.Frame.make_params [] ~cont:(fun pl -> GContainer.pack_container pl ~create:(fun pl -> ignore (Lazy.force derived_frame_gtype) ; new GBin.frame (GtkObject.make derived_frame_name pl : Gtk.frame Gtk.obj))) let main = let w = GWindow.window ~title:"Overriding signals demo" () in w#connect#destroy GMain.quit ; let f = create_derived_frame ~label:"Talking frame" ~packing:w#add () in let l = GMisc.label ~markup:"This is the <b>GtkFrame</b>'s content" ~packing:f#add () in w#show () ; GMain.main ()