从c++ dll中获取结构体到c#应用程序中

实际上我最近不得不解决一个类似的问题。我只是将数据序列化到一个结构体中，并通过本地zeromq套接字发送。

//
//  Weather update server in C++
//  Binds PUB socket to tcp://*:5556
//  Publishes random weather updates
//
//  Olivier Chamoux <olivier.chamoux@fr.thalesgroup.com>
//
#include <zmq.hpp>
#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#if (defined (WIN32))
#include <zhelpers.hpp>
#endif
#define within(num) (int) ((float) num * random () / (RAND_MAX + 1.0))
int main () {
    //  Prepare our context and publisher
    zmq::context_t context (1);
    zmq::socket_t publisher (context, ZMQ_PUB);
    publisher.bind("tcp://*:5556");
    publisher.bind("ipc://weather.ipc");                // Not usable on Windows.
    //  Initialize random number generator
    srandom ((unsigned) time (NULL));
    while (1) {
        int zipcode, temperature, relhumidity;
        //  Get values that will fool the boss
        zipcode     = within (100000);
        temperature = within (215) - 80;
        relhumidity = within (50) + 10;
        //  Send message to all subscribers
        zmq::message_t message(20);
        snprintf ((char *) message.data(), 20 ,
            "%05d %d %d", zipcode, temperature, relhumidity);
        publisher.send(message);
    }
    return 0;
}

和现在的客户端

using System;
using System.Collections.Generic;
using System.Linq;
using System.Net;
using ZeroMQ;
namespace Examples
{
    static partial class Program
    {
        public static void WUClient(string[] args)
        {
            //
            // Weather update client
            // Connects SUB socket to tcp://127.0.0.1:5556
            // Collects weather updates and finds avg temp in zipcode
            //
            // Author: metadings
            //
            if (args == null || args.Length < 2)
            {
                Console.WriteLine();
                Console.WriteLine("Usage: ./{0} WUClient [ZipCode] [Endpoint]", AppDomain.CurrentDomain.FriendlyName);
                Console.WriteLine();
                Console.WriteLine("    ZipCode   The zip code to subscribe. Default is 72622 Nürtingen");
                Console.WriteLine("    Endpoint  Where WUClient should connect to.");
                Console.WriteLine("              Default is tcp://127.0.0.1:5556");
                Console.WriteLine();
                if (args.Length < 1)
                    args = new string[] { "72622", "tcp://127.0.0.1:5556" };
                else
                    args = new string[] { args[0], "tcp://127.0.0.1:5556" };
            }
            string endpoint = args[1];
            // Socket to talk to server
            using (var context = new ZContext())
            using (var subscriber = new ZSocket(context, ZSocketType.SUB))
            {
                string connect_to = args[1];
                Console.WriteLine("I: Connecting to {0}…", connect_to);
                subscriber.Connect(connect_to);
                /* foreach (IPAddress address in WUProxy_GetPublicIPs())
                    {
                        var epgmAddress = string.Format("epgm://{0};239.192.1.1:8100", address);
                        Console.WriteLine("I: Connecting to {0}…", epgmAddress);
                        subscriber.Connect(epgmAddress);
                    }
                } */
                // Subscribe to zipcode
                string zipCode = args[0];
                Console.WriteLine("I: Subscribing to zip code {0}…", zipCode);
                subscriber.Subscribe(zipCode);
                // Process 10 updates
                int i = 0;
                long total_temperature = 0;
                for (; i < 20; ++i)
                {
                    using (var replyFrame = subscriber.ReceiveFrame())
                    {
                        string reply = replyFrame.ReadString();
                        Console.WriteLine(reply);
                        total_temperature += Convert.ToInt64(reply.Split(' ')[1]);
                    }
                }
                Console.WriteLine("Average temperature for zipcode '{0}' was {1}°", zipCode, (total_temperature / i));
            }
        }
    }
}