lua and C - creating tables and fields set/change event

[Flávio Alberto <flavioalsoares@...>]

Excuse-me, my last e-mail was sent in HTML mode, set in simple text mode...

Hello all
I'm a C/C++ programmer and new to Lua, I'm need a requirement on my
application, I need that a lua script access a previous created global
table and inside this table I need to have more three tables,  these
table creation was made in C system using this code :


static int l_index(lua_State* L)
{
  cout << __FILE__ << " : " << __FUNCTION__ << endl;
  return 1;
}

static int l_newindex(lua_State* L)
{
    cout << __FILE__ << " : " << __FUNCTION__ << endl;
  return 1;
}

static const struct luaL_Reg methods[] = {
{ "__index",       l_index },
{ "__newindex",    l_newindex },
{ NULL,            NULL            }
};


LUALIB_API int luaopen_mastertable (lua_State* L)
{
    luaL_newmetatable(L, "luasystem.mastertable");
  lua_pushvalue(L, -1);

  luaL_register(L, NULL, methods);
  lua_pop(L, 1);
  lua_pushnil(L);

    lua_pushnumber(L,0);
    lua_newtable(L);
    lua_pushliteral(L,"table1");
    lua_newtable(L);

    lua_pushliteral(L,"table2");
    lua_newtable(L);

    lua_pushliteral(L,"table3");
    lua_newtable(L);

    lua_settable(L,-7);
    lua_settable(L,-5);
    lua_settable(L,-3);

    lua_setglobal(L,"mastertable");

  return 1;
}

and in main code I do :

.
.
.
luaopen_mastertable(this->L, NULL, 0);
luaL_loadfile(...);
lua_pcall(...);
.
.
.

When running the folowing script :

print(">> type(mastertable)="..type(mastertable))
print(">> type(mastertable.table1)="..type(mastertable.table1))
print(">> type(mastertable.table2)="..type(mastertable.table2))
print(">> type(mastertable.table3)="..type(mastertable.table3))

mastertable.table1.a = 7
mastertable.table1.b = {}

print(">> mastertable.table1.a="..mastertable.table1.a)


I get the following messages on terminal :
>> type(mastertable)=table
>> type(mastertable.table1)=table
>> type(mastertable.table2)=table
>> type(mastertable.table3)=table
>> mastertable.table1.a=7

I look that my C code created the tables OK, but l_index()
l_newindex() were not called.
Whats the problem with the registration of these calls ? What is the
correct way to do this ?

Thanks for any help
Success

Flávio Lopes