Рассмотрим приведенный ниже код, который предназначен для доступа C ++ с использованием com

    namespace MarshalLib
    {
        //define an interface for account services
        [ComVisible(true)]
        [Guid("39B8A693-79BB-4638-92DE-245A88720953")]
        public interface IAccountStructLookup
        {
            AccountStruct RetrieveAccount(int acctId);
            void UpdateBalance(ref AccountStruct account);
            Alias[] GetRef();
        }

        //Implement an account struct
        [ComVisible(true)]
        [Guid("DB48C5B6-9646-491A-B030-C0CADCFC03E0")]
        public struct AccountStruct
        {
            public int AccountId;
            [MarshalAs(UnmanagedType.BStr)]
            public string AccountName;
            [MarshalAs(UnmanagedType.Currency)]
            public decimal Balance;

            //[MarshalAs(UnmanagedType.ByValArray, SizeConst = 5)]
            //[MarshalAs(UnmanagedType.SafeArray)]
            //public Alias[] Aliases;
        }

        [ComVisible(true)]
        [Guid("9829CAB3-4020-47EA-BE72-86EC7CFFAE1D")]
        public struct Alias
        {
            public string Name;
        }
        //implement a class to provide account services
        //using an AccountStruct
        [ComVisible(true)]
        [Guid("CEFE5CAA-5C7E-464F-8020-E0FC78180D9B")]
        [ClassInterface(ClassInterfaceType.None)]
        public class DniNetStructsObj : IAccountStructLookup
        {
            public AccountStruct RetrieveAccount(int acctId)
            {
                AccountStruct result = new AccountStruct();
                if (acctId == 123)
                {
                    result.AccountId = acctId;
                    result.AccountName = "myAccount";
                    result.Balance = 1009.95M;
                    //result.Aliases = new Alias[5];
                    //result.Aliases[0].Name = "1";
                    //result.Aliases[1].Name = "2";
                    //result.Aliases[2].Name = "3";
                    //result.Aliases[3].Name = "4";
                    //result.Aliases[4].Name = "5";

                }
                return result;
            }

            public void UpdateBalance(ref AccountStruct account)
            {
                //update the balance
                account.Balance += 500.00M;
            }
            public Alias[] GetRef( )
            {
                Alias[] al= new Alias[2];
                al[0].Name = "1";
                al[1].Name = "2";
                return al;
            }


}

И С ++ сторона вещей

#include "stdafx.h"
#include "ConsoleApplication1.h"
#import "D:\Source Code\MarshalLib\MarshalLib\bin\Debug\MarshalLib.tlb" raw_interface_only

#ifdef _DEBUG
#define new DEBUG_NEW
#endif


// The one and only application object

CWinApp theApp;

using namespace std;
using namespace MarshalLib;

int _tmain(int argc, TCHAR* argv[], TCHAR* envp[])
{
    int nRetCode = 0;

    HMODULE hModule = ::GetModuleHandle(NULL);

    if (hModule != NULL)
    {
        // initialize MFC and print and error on failure
        if (!AfxWinInit(hModule, NULL, ::GetCommandLine(), 0))
        {
            // TODO: change error code to suit your needs
            _tprintf(_T("Fatal Error: MFC initialization failed\n"));
            nRetCode = 1;
        }
        else
        {
            try
            {
            CoInitialize(NULL);
            IAccountStructLookupPtr api(__uuidof(DniNetStructsObj));
            api->GetRef();
            CoUninitialize();
            }
            catch (...)
            {
            }

        }
    }
    else
    {
        // TODO: change error code to suit your needs
        _tprintf(_T("Fatal Error: GetModuleHandle failed\n"));
        nRetCode = 1;
    }

    return nRetCode;
}

Я получаю сообщение об ошибке при вызове api-GetRef () для получения массива структур. Пожалуйста, помогите мне вернуть массив структур из c # и использовать его в c ++.

заранее спасибо.