Hello. On Fri, 12 Apr 2002 17:13:42 +0900 "U.Nakamura" <usa / osb.att.ne.jp> wrote: > If you need to use C++, sorry, I can't help you. > We should call C++ guru. RUBY_METHOD_FUNC helps. like this: rb_define_method(cTest, "add", RUBY_METHOD_FUNC(t_add), 1); takuma