我是C#的新手,很难从C#项目调用C ++ API 我创建了文件“socket.dll”,它有C ++ API。以下是摘录
source.cpp + source.h-> socket.dll
#include "Source.h"
void PiblRequestCallback(PibMsgConf &msg, void *param)
{
cout << "In PibRequestCallback" << endl;
}
uint32_t GetPib()
{
return 25;
}
我从C#项目调用上面的API“GetPib”。以下是代码段:
(WindowsFormsAPP)
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.Runtime.InteropServices;
namespace WindowsFormsApp1
{
public partial class Form1 : Form
{
[DllImport("socket.dll")]
public static extern UInt32 GetPib();
public Form1()
{
InitializeComponent();
}
private void GetPib_button_Click(object sender, EventArgs e)
{
pib_len_tbox.Text = GetPib().ToString();
}
}
}
在运行C#代码段时,我收到错误
System.EntryPointNotFoundException: 'Unable to find an entry point named
'GetPib' in DLL 'socket.dll'.'
要在socket.dll文件或C#项目中进行哪些更改才能使其正常工作。
答案 0 :(得分:0)
导入外部功能:
[DllImport("socket.dll", EntryPoint = "getpib")]
public static extern UInt32 GetPib();
如果未找到入口点,则使用dumpbin查找入口点(使用visual studio命令提示符)
dumpbin /exports [dll path]