package Void_Marshaller is

type Handler is access function
           (Widget    : access Widget_Type'Class;
            User_Data : User_Type) return Return_Type;

function To_Marshaller 
(
Cb
: Handler) return Marshaller;

function Emit_By_Name 
(
Object
: access Widget_Type'Class;
Name
: Glib.Signal_Name) return Return_Type;