Re: Looking for a better way with Lua, C++, and static members

[Eric Wing <ewing2121@...>]

Thank you Jeff! I think this is exactly what I need.

Thanks again to everybody who answered me!
-Eric


> Date: Fri, 15 Aug 2003 14:11:21 -0400
> From: Jeff Williams <jwilliams@mfchelp.com>
> Here is a technique I use:
> 
> struct foo
> {
>    static int set_i(lua_State* L);
>    int i;
> };
> 
> int foo::set_i(lua_State* L)
> {
>   foo* pFoo =
> reinterpret_cast<foo*>(lua_touserdata(L,
> lua_upvalue(1));
>   pFoo->i = lua_tonumber(L, 1);
>   return 0;
> }
> 
> // Code to register the function and class instance
> with lua
> foo f;
> 
> lua_State* L = lua_open();
> lua_pushstring(L, "set_i");
> lua_pushlightuserdata(L, &f);
> lua_pushclosure(L, foo::set_i, 1);
> lua_settable(L, LUA_GLOBALSINDEX);
> 
> lua_dofile(L, "foo.lua");
> 
> lua_close(L);
> 
> contents of foo.lua
> -------------------
> set_i(666);
> 


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