如何从Un-managed C ++调用托管C ++方法

问题描述

我研究了这到互联网的尽头，但没有找到一个真正的，可以理解的，如何做到这一点的人的例子。

I have researched this to the end of the internet without finding a real, understandable, human example of how to do this.

我有一个C＃DLL来加密和解密文本。

I have a C# DLL that encrypts and decrypts text.

我不想/不具备在C ++非托管代码中重写这个知识的能力。所以我创建了一个C ++ / CLR类与C＃dll接口。

I don't want to / don't have the intellectual capability to rewrite this in C++ un-managed code. So instead I created a C++/CLR class that interfaces with the C# dll.

现在我需要知道如何从我的非托管代码调用托管C ++。

NOW I need to know how to call the managed C++ from my unmanaged code.

这是我的托管代码，并且已验证其有效。

Here is my managed code and it is verified that it works

// clrTest.cpp : main project file.

#include "cSharpRiJHarn"
#include "stdafx.h"
#include <string>
#include <stdio.h>

using namespace cSharpRiJHarn;
using namespace System;


String^ Encrypt(String ^s)
{
    return  RijndaelLink::encrypt(s);
}


String^ Decrypt(String ^s)
{
    return  RijndaelLink::decrpyt(s);
}

int main()
{
     //Console::WriteLine(Encrypt("It Works"));

     //Console::WriteLine(Decrypt(Encrypt("It Works")));

     //Console::ReadLine();
     return 0;
}

现在重新开始我已经研究过了。

Now ONCE AGAIN I HAVE researched this.

我看过allllllll的错误/过于复杂的解释

I have seen allllllll the bad/overly complicated explanations

我知道我需要使用COM Interop

I know I need to use something called COM or Interop

我不知道这是如何工作的，我只是寻找一个非常简单的解释。

I don't know how this works and I am just looking for a very simple explanation.

感谢您的帮助。

我已经将C＃DLL转换为COM文件

I have turned the C# DLL into a COM File

using System;
using System.Runtime.InteropServices;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace cSharpRiJHarn
{
    [Guid("GuiD CODE REMOVED")]
    public interface DBCOM_Interface
    {
        [DispId(1)]
        String encrypt(string s);
        [DispId(2)]
        String decrpyt(string s);
    }

    [Guid("GuiD CODE REMOVED"),
    InterfaceType(ComInterfaceType.InterfaceIsIDispatch)]
    public interface DBCOM_Events
    {
    }

    [Guid("GuiD CODE REMOVED"),
    ClassInterface(ClassInterfaceType.None),
    ComSourceInterfaces(typeof(DBCOM_Events))]
    public class RijndaelLink : DBCOM_Interface
    {
        public String encrypt(String s)
        {
            return Rijndael.EncryptString(s);
        }
        public String decrpyt(String s)
        {
            return Rijndael.DecryptString(s);
        }
    }
}

现在我只需要知道如何在非托管C ++中实现这一点...
我试过将文件添加到C ++项目中，并将整个cSharpRiJHarn项目添加到此解决方案。都不工作。

Now I am just need to know how to implement this in unmanaged C++...I have tried both adding just the files to the C++ project and also adding the entire cSharpRiJHarn Project to this solution. Neither work.

#import "cSharpRiJHarn"
#include "stdafx.h"
#include <string>
#include <stdio.h>
#include <iostream>
//using namespace cSharpRiJHarn;


int main(){

    cSharpRiJHarn::RijndaelLink::encrypt("It works");
    char ch;
    std::cin>>ch;
    return 0;
}

这是我得到的错误之一。

This is one of the errors I am getting.

和

推荐答案

您可以使用酷的由Microsoft提供，类似如下：

You could use the cool C++ Marshaling library provided by Microsoft, something like this:

#include "cSharpRiJHarn"
#include "stdafx.h"
#include <string>
#include <stdio.h>
#include "msclr\marshal_cppstd.h" // marshaling library

using namespace cSharpRiJHarn;
using namespace System;
using namespace msclr::interop; // marshaling library

std::wstring Encrypt(std::wstring s)
{
    return marshal_as<std::wstring>(RijndaelLink::encrypt(marshal_as<String^>(s)));
}

std::wstring Decrypt(std::wstring s)
{
    return marshal_as<std::wstring>(RijndaelLink::decrypt(marshal_as<String^>(s)));
}

这篇关于如何从Un-managed C ++调用托管C ++方法的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！