VC获取本地网卡信息

操作系统:win10

IDE:vs2019

涉及到的函数:GetAdaptersInfo

涉及到的头文件:Windows.h、iphlpapi.h、atlstr.h

涉及到的库:Iphlpapi.lib

代码如下:

#include <Windows.h>
#include <iphlpapi.h>
#include <iostream>
#include <atlstr.h>
#pragma comment(lib,"Iphlpapi.lib")
int main()
{
    PIP_ADAPTER_INFO pAdapterInfo = NULL;
    PIP_ADAPTER_INFO pAdapter = NULL;
    DWORD dwRetVal = 0;
    ULONG ulOutBufLen = sizeof(IP_ADAPTER_INFO);
    if (GetAdaptersInfo(NULL, &ulOutBufLen) == ERROR_BUFFER_OVERFLOW)
        pAdapterInfo = (IP_ADAPTER_INFO*)malloc(ulOutBufLen);
    if((dwRetVal = GetAdaptersInfo(pAdapterInfo,&ulOutBufLen)) == NO_ERROR){
        pAdapter = pAdapterInfo;
        while (pAdapter) {
            PIP_ADDR_STRING pIPAddr;
            pIPAddr = &pAdapter->IpAddressList;
            while (pIPAddr) {
                CString ip = pIPAddr->IpAddress.String;
                CString mask = pIPAddr->IpMask.String;
                if (ip.Compare(_T("0.0.0.0"))&&mask.Compare(_T("0.0.0.0"))) {
                    std::cout << pAdapter->Description << " 已连接" << std::endl;
                    std::cout << "IP地址: " << pIPAddr->IpAddress.String << std::endl;
                    std::cout << "子网掩码: " << pIPAddr->IpMask.String << std::endl;
                }
                else {
                    std::cout << pAdapter->Description << " 网卡未连接" << std::endl;
                }
                pIPAddr = pIPAddr->Next;
            }
            pAdapter = pAdapter->Next;
        }
    }

    if (pAdapterInfo)free(pAdapterInfo);
    return 0;
}

编译通过，运行如下图：

在MFC中实现

布局:

设置1个控件变量，分别是CAdapter

代码部分:

双击布局中的获取按钮进入按钮事件函数，写如下代码即可

	PIP_ADAPTER_INFO pAdapterInfo = NULL;
	PIP_ADAPTER_INFO pAdapter = NULL;
	DWORD dwRetVal = 0;
	ULONG ulOutBufLen = sizeof(IP_ADAPTER_INFO);
	if (GetAdaptersInfo(NULL, &ulOutBufLen) == ERROR_BUFFER_OVERFLOW)
		pAdapterInfo = (IP_ADAPTER_INFO*)malloc(ulOutBufLen);
	if ((dwRetVal = GetAdaptersInfo(pAdapterInfo, &ulOutBufLen)) == NO_ERROR) {
		pAdapter = pAdapterInfo;
		while (pAdapter) {
			PIP_ADDR_STRING pIPAddr;
			pIPAddr = &pAdapter->IpAddressList;
			while (pIPAddr) {
				CString ip = (CString)pIPAddr->IpAddress.String;
				CString mask = (CString)pIPAddr->IpMask.String;
				if (ip.Compare(_T("0.0.0.0")) && mask.Compare(_T("0.0.0.0"))) {
					CAdapter.AddString((CString)pAdapter->Description + " 已连接");
					CAdapter.AddString((CString)"IP地址: " + pIPAddr->IpAddress.String);
					CAdapter.AddString((CString)"子网掩码: " + pIPAddr->IpMask.String);
				}
				else {
					CAdapter.AddString((CString)pAdapter->Description + " 网卡未连接");
				}
				pIPAddr = pIPAddr->Next;
			}
			pAdapter = pAdapter->Next;
		}
	}

	if (pAdapterInfo)free(pAdapterInfo);

截图一下我的获取按钮事件函数