#include "stdafx.h"

extern "C" __declspec(dllexport) void HelloWorld(char* name)

{

    name[] = 'c';

}

#pragma once

#include "targetver.h"

#define WIN32_LEAN_AND_MEAN

#include <windows.h>

extern "C" __declspec(dllexport) void HelloWorld(char* name);

using System;

using System.Collections.Generic;

using System.Linq;

using System.Runtime.InteropServices;

using System.Text;

using System.Threading.Tasks;

namespace CSharp

{

    class Program

    {

        [DllImport("kernel32.dll", CharSet = CharSet.Ansi)]

        static extern IntPtr LoadLibrary(string lpFileName);        //加载动态链接库

        [DllImport("kernel32.dll", CharSet = CharSet.Ansi)]

        static extern IntPtr GetProcAddress(IntPtr hModule, string lpProcName);     //获取接口地址

        [DllImport("kernel32", EntryPoint = "FreeLibrary", SetLastError = true, CharSet = CharSet.Ansi)]

        static extern bool FreeLibrary(IntPtr hModule);

        private delegate void DelegateHelloWorld(IntPtr a);

        private static void Main(string[] args)

        {

            IntPtr hModule = LoadLibrary(@"D:\MyProject\CSharp\CSharp\bin\Debug\Cplus.dll");

            IntPtr proc = GetProcAddress(hModule, "HelloWorld");

            Byte[] array = new Byte[];

            array[] = (byte)'a';

            array[] = (byte)'b';

            array[] = (byte)'c';

            IntPtr ptr = Marshal.UnsafeAddrOfPinnedArrayElement(array, );

            DelegateHelloWorld delegate1 = Marshal.GetDelegateForFunctionPointer(proc, typeof(DelegateHelloWorld)) as DelegateHelloWorld;

            delegate1(ptr);

            string str = Encoding.ASCII.GetString(array).Replace("\0", "");

            Console.WriteLine(str);

            Console.ReadLine();

        }

    }

}