lua_getglobal(lua, "ta"); //调用后栈顶放的就是全局变量

lua_getfield(lua, -1, "name");//

printf("lua ta = %s\n", lua_tostring(lua, -1));

lua_pop(lua, 2);

列子：

C++:

//c++调用Lua给Lua传递表和访问Lua的表-----------------------

////第一种

lua_getglobal(L,"conf"); //取表

lua_getfield(L,-1,"height");

printf("height= %d\n",(int)lua_tonumber(L,-1));

lua_getfield(L,-2,"titlename"); //取值

printf("title = %s\n",lua_tostring(L,-1));

lua_pop(L,3);

//第二种，每取一次就把值出栈

lua_getglobal(L,"conf"); //取表

lua_getfield(L,-1,"height");

printf("height= %d\n",(int)lua_tonumber(L,-1));

lua_pop(L,1);

lua_getfield(L,-1,"titlename"); //取值

printf("title = %s\n",lua_tostring(L,-1));

lua_pop(L,1);

lua_pop(L,1); //最后要表出栈

LUA:

------------------c++调用Lua给Lua传递表和访问Lua的表-----------------------

conf = {

titlename="first lua",

height = 1080

}

lua_newtable(lua); /* creates a table 创建一个表*/

lua_pushstring(lua, "name"); //压入表

lua_pushstring(lua, "c to lua name");

lua_settable(lua, -3); //弹出key, value, 表在栈顶了

lua_setglobal(lua, "cvar"); //将栈顶位置设置全局变量并出栈

//c++给Lua传递表

lua_newtable(L);

lua_pushstring(L,"name");

lua_pushstring(L,"xiaoming");

lua_settable(L,-3);

lua_pushstring(L,"age");

lua_pushnumber(L,20);

lua_settable(L,-3);

lua_setglobal(L,"testCToLuaTable"); //设为全局变量

lua:

-------------------c++传递给Lua全局变量表

print("test name c++ -> lua table="..testCToLuaTable["name"]);

print("test age c++ -> lua table="..testCToLuaTable.age);