dll按功能luaL_openlib出口，然后lua使用package.loadlib导入库函数，基本就是这么个过程，以下上代码来说明一切。

#include "stdafx.h"#ifdef __cplusplusextern "C"{#endif#include "lua.h"#include "lualib.h"#include "lauxlib.h"#ifdef __cplusplus}#endif#include 
     
      #pragma comment(lib, "lua51.lib")static int math_abs(lua_State *L){	lua_pushnumber(L, abs((int)luaL_checknumber(L, 1)));	return 1;}static int math_cos(lua_State *L){	lua_pushnumber(L, cos((double)luaL_checknumber(L, 1)));	return 1;}static int math_sin(lua_State *L){	lua_pushnumber(L, sin((double)luaL_checknumber(L, 1)));	return 1;}static const luaL_reg mathlib[] = {	{ "abs", math_abs },	{ "cos", math_cos },	{ "sin", math_sin },	{ NULL, NULL }};static int ShowMessage(lua_State * L){	lua_pushnumber(L, 1000);	printf("show message and push 1000 \n");	return -1;}#ifdef _WIN32extern "C" __declspec(dllexport) int luaopen_luadlllib(lua_State* L){#elseextern "C"  int luaopen_luadlllib(lua_State* L){#endif // _WIN32	//MessageBox(NULL, TEXT("Register C++ Functions..."), NULL, MB_OK);	luaL_openlib(L, "DY_MATH", mathlib,0);	return 1;}
     

--region loadlib.lua	--Date	--此文件由[BabeLua]插件自己主动生成   --(package.loadlib("./../Debug/libforlua", "luaopen_luadlllib"))()    --(package.loadlib("./../Debug/libforlua.dll", "luaopen_luadlllib"))()    local libpath="./../Debug/libforlua.dll"    local loadlibfunc=package.loadlib(libpath,"luaopen_luadlllib")    loadlibfunc()	function COS(a)	print("called COS in lua script")	return DY_MATH.cos(a)	end	function SIN(a)	print("called SIN in lua script")	return DY_MATH.sin(a)	end	function SHOWMESSAGE()	showmessage()	end   	print(COS(60*3.1415926/180))        print("enter a number:")     a = io.read("*number") 	--endregion

babelua插件的设置：

演示样例project的下载地址:

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