Hi dear all, How about this error ? E:\SRC\LIBS\boost_1_49_0\boost/type_traits/detail/is_mem_fun_pointer_tester.hpp: 2669:1: error: expected unqualified-id @#ifndef BOOST_TT_NO_ELLIPSIS_IN_FUNC_TESTING ^ I've enabled microsoft extension mode with -fms-extensions, why did still get this ? Many thanks .