c++调用lua注册的带参数的回调

int lua_cb = LUA_REFNIL;

int lua_cb_arg = LUA_REFNIL;

int setcb(lua_State *L)

{

    lua_pushvalue(L, -);

    lua_callback = luaL_ref(L, LUA_REGISTRYINDEX);

    lua_pushvalue(L, -);

    lua_cb_arg = luaL_ref(L, LUA_REGISTRYINDEX);

    return ;

}

int main()

{

    lua_State* L = luaL_newstate();

    top = lua_gettop(L);

    luaopen_base(L);

    luaL_openlibs(L);

    //注册回调

    lua_register(L, "setcb", setcb);

    int ret = luaL_dofile(L, "test.lua");

    if(ret != )

    {

        printf("%s", lua_tostring(L, -));

    }

    //调用回调

    lua_rawgeti(L, LUA_REGISTRYINDEX, lua_cb );

    lua_rawgeti(L, LUA_REGISTRYINDEX, lua_cb_arg);

    lua_call(L, , );

    lua_close(L);

    getchar();

    return ;

}

local cb_arg = {a=};

setcb(function(_arg)

    print("cb' s arg is a table, arg.a=" .. _arg["a"]);

end, cb_arg);