Question

说明：

我的所有函数都在C＃dll项目中定义。然后我将c＃函数包装在cpp库项目中，现在我想用c ++编写一个lua模块并调用包装函数。

问题：

如何调用lua cpp模块中的包装函数？请给我一些建议，谢谢！

代码：

libutilscore项目（C＃DLL）

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

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();
}

libutils项目（Lua CPP模块）

libutils.h

#pragma once

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

libutils.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;
}

如何在lua cpp模块中调用托管c ++ dll函数

0 个答案: