Hi guys, I cannot compile without error for function10.hpp in Visual Studio 2005 Pro. A simple source file to reproduce the problem is attached(Test.cpp). There is no such problem with other function0-9.hpp, except for function10.hpp. The error message encounter is as below, 1>d:\downloads\boost_1_36_0\boost_1_36_0\boost\mem_fn.hpp(318) : warning C4180: qualifier applied to function type has no meaning; ignored 1>        d:\downloads\boost_1_36_0\boost_1_36_0\boost\function\function_template.hpp(381) : see reference to class template instantiation 'boost::_mfi::dm' being compiled 1>        with 1>        [ 1>            R=int (int,int,int,int,int,int,int,int,int), 1>            T=MyClass 1>        ] 1>        d:\downloads\boost_1_36_0\boost_1_36_0\boost\function\function_template.hpp(277) : see reference to function template instantiation 'bool boost::detail::function::basic_vtable10::assign_to<F>(MemberPtr,boost::detail::function::function_buffer &,boost::detail::function::member_ptr_tag)' being compiled 1>        with 1>        [ 1>            R=int, 1>            T0=MyClass *, 1>            T1=int, 1>            T2=int, 1>            T3=int, 1>            T4=int, 1>            T5=int, 1>            T6=int, 1>            T7=int, 1>            T8=int, 1>            T9=int, 1>            F=int (__thiscall MyClass::* )(int,int,int,int,int,int,int,int,int), 1>            MemberPtr=int (__thiscall MyClass::* )(int,int,int,int,int,int,int,int,int) 1>        ] 1>        d:\downloads\boost_1_36_0\boost_1_36_0\boost\function\function_template.hpp(779) : see reference to function template instantiation 'bool boost::detail::function::basic_vtable10::assign_to<Functor>(F,boost::detail::function::function_buffer &)' being compiled 1>        with 1>        [ 1>            R=int, 1>            T0=MyClass *, 1>            T1=int, 1>            T2=int, 1>            T3=int, 1>            T4=int, 1>            T5=int, 1>            T6=int, 1>            T7=int, 1>            T8=int, 1>            T9=int, 1>            Functor=int (__thiscall MyClass::* )(int,int,int,int,int,int,int,int,int), 1>            F=int (__thiscall MyClass::* )(int,int,int,int,int,int,int,int,int) 1>        ] 1>        d:\downloads\boost_1_36_0\boost_1_36_0\boost\function\function_template.hpp(612) : see reference to function template instantiation 'void boost::function10::assign_to<Functor>(Functor)' being compiled 1>        with 1>        [ 1>            R=int, 1>            T0=MyClass *, 1>            T1=int, 1>            T2=int, 1>            T3=int, 1>            T4=int, 1>            T5=int, 1>            T6=int, 1>            T7=int, 1>            T8=int, 1>            T9=int, 1>            Functor=int (__thiscall MyClass::* )(int,int,int,int,int,int,int,int,int) 1>        ] 1>        d:\myprojects\testvaltype\testvaltype\testvaltype.cpp(45) : see reference to function template instantiation 'boost::function10::function10(Functor,int)' being compiled 1>        with 1>        [ 1>            R=int, 1>            T0=MyClass *, 1>            T1=int, 1>            T2=int, 1>            T3=int, 1>            T4=int, 1>            T5=int, 1>            T6=int, 1>            T7=int, 1>            T8=int, 1>            T9=int, 1>            Functor=int (__thiscall MyClass::* )(int,int,int,int,int,int,int,int,int) 1>        ] 1>d:\downloads\boost_1_36_0\boost_1_36_0\boost\mem_fn.hpp(326) : warning C4180: qualifier applied to function type has no meaning; ignored 1>d:\downloads\boost_1_36_0\boost_1_36_0\boost\mem_fn.hpp(331) : warning C4180: qualifier applied to function type has no meaning; ignored 1>d:\downloads\boost_1_36_0\boost_1_36_0\boost\mem_fn.hpp(345) : warning C4180: qualifier applied to function type has no meaning; ignored 1>d:\downloads\boost_1_36_0\boost_1_36_0\boost\mem_fn.hpp(350) : warning C4180: qualifier applied to function type has no meaning; ignored 1>d:\downloads\boost_1_36_0\boost_1_36_0\boost\mem_fn.hpp(362) : warning C4180: qualifier applied to function type has no meaning; ignored 1>d:\downloads\boost_1_36_0\boost_1_36_0\boost\function\function_template.hpp(123) : error C2064: term does not evaluate to a function taking 10 arguments 1>        class does not define an 'operator()' or a user defined conversion operator to a pointer-to-function or reference-to-function that takes appropriate number of arguments 1>        d:\downloads\boost_1_36_0\boost_1_36_0\boost\function\function_template.hpp(117) : while compiling class template member function 'int boost::detail::function::function_obj_invoker10::invoke(boost::detail::function::function_buffer &,T0,T1,T2,T3,T4,T5,T6,T7,T8,T9)' 1>        with 1>        [ 1>            FunctionObj=boost::_mfi::dm, 1>            R=int, 1>            T0=MyClass *, 1>            T1=int, 1>            T2=int, 1>            T3=int, 1>            T4=int, 1>            T5=int, 1>            T6=int, 1>            T7=int, 1>            T8=int, 1>            T9=int 1>        ] 1>        d:\downloads\boost_1_36_0\boost_1_36_0\boost\function\function_template.hpp(413) : see reference to class template instantiation 'boost::detail::function::function_obj_invoker10' being compiled 1>        with 1>        [ 1>            FunctionObj=boost::_mfi::dm, 1>            R=int, 1>            T0=MyClass *, 1>            T1=int, 1>            T2=int, 1>            T3=int, 1>            T4=int, 1>            T5=int, 1>            T6=int, 1>            T7=int, 1>            T8=int, 1>            T9=int 1>        ] 1>        d:\downloads\boost_1_36_0\boost_1_36_0\boost\function\function_template.hpp(297) : see reference to function template instantiation 'void boost::detail::function::basic_vtable10::init<F>(FunctionObj,boost::detail::function::function_obj_tag)' being compiled 1>        with 1>        [ 1>            R=int, 1>            T0=MyClass *, 1>            T1=int, 1>            T2=int, 1>            T3=int, 1>            T4=int, 1>            T5=int, 1>            T6=int, 1>            T7=int, 1>            T8=int, 1>            T9=int, 1>            F=boost::_mfi::dm, 1>            FunctionObj=boost::_mfi::dm 1>        ] 1>        d:\downloads\boost_1_36_0\boost_1_36_0\boost\function\function_template.hpp(363) : see reference to function template instantiation 'void boost::detail::function::basic_vtable10::init>(F)' being compiled 1>        with 1>        [ 1>            R=int, 1>            T0=MyClass *, 1>            T1=int, 1>            T2=int, 1>            T3=int, 1>            T4=int, 1>            T5=int, 1>            T6=int, 1>            T7=int, 1>            T8=int, 1>            T9=int, 1>            T=MyClass, 1>            F=boost::_mfi::dm 1>        ] 1>        d:\downloads\boost_1_36_0\boost_1_36_0\boost\function\function_template.hpp(297) : see reference to function template instantiation 'void boost::detail::function::basic_vtable10::init<F>(MemberPtr,boost::detail::function::member_ptr_tag)' being compiled 1>        with 1>        [ 1>            R=int, 1>            T0=MyClass *, 1>            T1=int, 1>            T2=int, 1>            T3=int, 1>            T4=int, 1>            T5=int, 1>            T6=int, 1>            T7=int, 1>            T8=int, 1>            T9=int, 1>            F=int (__thiscall MyClass::* )(int,int,int,int,int,int,int,int,int), 1>            MemberPtr=int (__thiscall MyClass::* )(int,int,int,int,int,int,int,int,int) 1>        ] 1>        d:\downloads\boost_1_36_0\boost_1_36_0\boost\function\function_template.hpp(265) : see reference to function template instantiation 'void boost::detail::function::basic_vtable10::init<F>(F)' being compiled 1>        with 1>        [ 1>            R=int, 1>            T0=MyClass *, 1>            T1=int, 1>            T2=int, 1>            T3=int, 1>            T4=int, 1>            T5=int, 1>            T6=int, 1>            T7=int, 1>            T8=int, 1>            T9=int, 1>            F=int (__thiscall MyClass::* )(int,int,int,int,int,int,int,int,int) 1>        ] 1>        d:\downloads\boost_1_36_0\boost_1_36_0\boost\function\function_template.hpp(778) : see reference to function template instantiation 'boost::detail::function::basic_vtable10::basic_vtable10<Functor>(F)' being compiled 1>        with 1>        [ 1>            R=int, 1>            T0=MyClass *, 1>            T1=int, 1>            T2=int, 1>            T3=int, 1>            T4=int, 1>            T5=int, 1>            T6=int, 1>            T7=int, 1>            T8=int, 1>            T9=int, 1>            Functor=int (__thiscall MyClass::* )(int,int,int,int,int,int,int,int,int), 1>            F=int (__thiscall MyClass::* )(int,int,int,int,int,int,int,int,int) 1>        ] ------ Thank you for looking into this. Best regards, Bob Lim Get your new Email address! Grab the Email name you've always wanted before someone else does! http://mail.promotions.yahoo.com/newdomains/sg/