C#调用C++类库

最新推荐文章于 2025-07-23 00:30:49 发布

原创最新推荐文章于 2025-07-23 00:30:49 发布 · 748 阅读

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C++代码

#include<iostream>
using namespace std;
extern "C"
{
	_declspec(dllexport) int FunctionInDLL(const wchar_t* p){
		wcout << L"这是c++的库:\n";
		wcout << p << L"'" << endl;
		return 42;
	}
}

C#代码

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

namespace 调C__类库
{
    class Program
    {
        [DllImport("ConsoleApplication1.dll", CharSet = CharSet.Unicode, CallingConvention = CallingConvention.Cdecl)]
        public static extern int FunctionInDLL(string s);
        static void Main(string[] args)
        {
            Console.WriteLine("C#");
            int result = FunctionInDLL("这就是C#");
            Console.WriteLine(result);
            Console.ReadKey();
        }
    }
}