C++中调用Lua的全局变量和全局函数

lua代码

a = 

str = "hello world"

function SetA(param)
    a = param
end

function SetStr()
    str = "hello wolrd ni hao"
end
           

c++使用前需要包含头文件

#include <lua/lua.hpp>
#include <luabind/luabind.hpp>
#include <luabind/raw_policy.hpp>
           

lua_State* m_L = lua_open();
luaL_openlibs(m_L);
luabind::open(m_L);
try
{
    //获取lua中的全局变量a
    luabind::object luaRet = luabind::globals(m_L)["a"];
    int a = luabind::object_cast<int>(luaRet);

    //修改lua中的全局变量a的值为
    luabind::globals(m_L)["a"] = ;

    //获取全局变量str
    luaRet = luabind::globals(m_L)["str"];
    std::string b= luabind::object_cast<std::string>(str);

    //修改lua中的全局变量str的值为”ni hao"
    luabind::globals(m_L)["str"] = "ni hao";

    //调用lua中的全局函数SetA()
    luabind::call_function<int>(m_L,"SetA",10);

    //调用lua中的全局函数SetStr()
    luabind::call_function<void>(m_L,"SetStr");
}
catch (std::exception& e)
{
    theLog.error("Lua runtime error: %s", e.what());
}