如何在 lua cpp 模块中调用托管 c++ dll 函数

描述：

我所有的函数都是在 C# dll 项目中定义的。然后我把c#函数包装在一个cpp库项目中，现在我想用c++写一个lua模块并调用包装函数。

问题：

如何在 lua cpp 模块中调用包装器函数？请给我一些建议，谢谢！

代码：

1. libutilscore Project(C# DLL(

   namespace libutilscore
   {
   public static class SharpFTP
   {
   public static string ShowHello()
   {
   return "Hello From C Sharp.";
   }
   }
   }
   

2. ManagedDll Project(C++ DLL(

   • ManagedDll.h

     #pragma once
     #ifdef MANAGEDDLL_EXPORTS
     #define MANAGEDDLL_API __declspec(dllexport)
     #else
     #define MANAGEDDLL_API __declspec(dllimport)
     #endif
     MANAGEDDLL_API const char *CPP_ShowHello();
     

   • ManagedDll.cpp

     #include "ManagedDll.h"
     #include <string>
     using namespace System;
     using namespace std;
     using namespace libutilscore;
     namespace ManagedDll
     {
     public ref class CS_FTP
     {
     public:
     static string CS_ShowHello()
     {
     String ^ message = libutilscore::SharpFTP::ShowHello();
     string result = "";
     MarshallString(message, result);
     return result;
     }
     private:
     static void MarshallString(String ^csstr, string &stdstr)
     {
     using namespace Runtime::InteropServices;
     const char *chars = (const char*)(Marshal::StringToHGlobalAnsi(csstr)).ToPointer();
     stdstr = chars;
     Marshal::FreeHGlobal(IntPtr((void *)chars));
     }
     static void MarshallWstring(String ^csstr, string &wstr)
     {
     using namespace Runtime::InteropServices;
     const char *wchars = (const wchar_t*)(Marshal::StringToHGlobalAnsi(csstr)).ToPointer();
     wstr = wchars;
     Marshal::FreeHGlobal(IntPtr((void *)wchars));
     }
     };
     }
     MANAGEDDLL_API string CPP_ShowHello() 
     {
     return ManagedDll::CS_FTP::CS_ShowHello();
     }
     

     3. libutils Project(Lua CPP Module(

   • libutils.h

     #pragma once
     #ifdef LIBUTILS_EXPORTS
     #define LIBUTILS_API __declspec(dllexport)
     #else
     #define LIBUTILD_API __declspec(dllimport)
     #endif // LIBUTILS_EXPORTS
     

   利

   • 布利斯.cpp

     #include "libutils.h"
     #include "lua.hpp"
     LIBUTILS_API int showHello(lua_State *luaEnv)
     {
     const char *msg = "";
     // TODO Call DLL function
     // msg = CPP_ShowHello().c_str();
     lua_pushstring(luaEnv, msg);
     return 1;
     }
     static const luaL_Reg libutils_funcs[] = {
     {"showHello", showHello},
     {"NULL", NULL}
     };
     LIBUTILS_API int luaopen_libutils(lua_State *luaEnv)
     {
     luaL_newlib(luaEnv, libutils_funcs);
     return 1;
     }