#pragma once#ifdef MUST_HAVE_DEFINE# ifndef _WINDLL# error"_WINDLL is not defined, but it should be"# endif# if _WINDLL != 1# error"_WINDLL is not defined as 1, but it should be"# endif#else# ifdef _WINDLL# error"_WINDLL is defined, but it should not be"# endif#endifintFUNCTION(void){return0;}