#include "ruby.h" static VALUE my_integer_s_new(VALUE klass) { return Data_Wrap_Struct(klass, 0, 0, 0); } void Init_my_integer(VALUE klass) { VALUE cMyInteger; cMyInteger = rb_define_class_under(klass, "MyInteger", rb_cInteger); rb_define_singleton_method(cMyInteger, "new", my_integer_s_new, 0); }