+++ /dev/null
-
-#if !defined( INCLUDED_CALLBACKFWD_H )
-#define INCLUDED_CALLBACKFWD_H
-
-template<typename Return>
-class Callback0;
-typedef Callback0<void> Callback;
-
-template<typename FirstArgument, typename Result = void>
-class Callback1;
-
-template<typename FirstArgument, typename SecondArgument, typename Result = void>
-class Callback2;
-
-template<typename FirstArgument, typename SecondArgument, typename ThirdArgument, typename Result = void>
-class Callback3;
-
-#endif