class function calls

Hi all.

I try to use lua to make our render engine more generel.

I have made following simple script but can't call the functions!

-- XXX configuration file.

RenderEngine = {

};

Configuration = {

width = 1280,

height = 1024,

fullscreen = 1

};

-- Called before render engine is initialized

function RenderEngine:Initialize()

return 1;

end

-- Called after render engine is Shutdown

function RenderEngine:ShutDown()

return 1;

end

And my code for call Initialize looks like this.

lua_State *L = lua_open();

luaL_openlibs(L);

luaL_dofile(L, "../Scripts/initialize.lua");

//luaL_loadfile(L, "../Scripts/initialize.lua");

//lua_pcall(L,0,0,0);

lua_getglobal(L, "Configuration");

lua_pushstring(L, "width");

lua_gettable(L, -2);

int w = (int) lua_tonumber(L, -1);

lua_pop(L, 1);

lua_pushstring(L, "height");

lua_gettable(L, -2);

int h = (int) lua_tonumber(L, -1);

lua_pop(L, 1);

lua_getglobal(L, "RenderEngine");

lua_pushstring(L, "Initialize");

lua_gettable(L, -1);

lua_insert(L, 1);

lua_pcall(L, 0, 1, 0);

int bOK = (int)lua_tointeger(L, -1);

lua_pop(L, 1);

lua_close(L);

Can you see what I'm doing wrong ?

Thanks,

Anders.