[Lua] 如何返回一个table给C程序?

fuction Test()
    NpkData =
    {
       signal = 1,
       id = 2,
       name = "abc",
       hp = 1000,
       mp = 2000,
    }
end

请问lua如何把上面NpkData这个表返回给C程序??
除了依次返回表的每一个数据外,还有别的什么方法?
[解决办法]
http://stackoverflow.com/questions/12096281/how-to-have-a-lua-iterator-return-a-c-struct