C++ 获取网卡的PnPInstanceId
时间: 2023-09-03 12:07:40 浏览: 55
要获取网卡的PnPInstanceId,可以使用Windows API函数GetAdaptersInfo()或GetAdaptersAddresses()来枚举系统上的所有网络适配器,并获取它们的信息,其中包括PnPInstanceId。
以下是使用GetAdaptersAddresses()函数获取所有网卡的PnPInstanceId的示例代码:
```c++
#include <stdio.h>
#include <winsock2.h>
#include <iphlpapi.h>
#pragma comment(lib, "iphlpapi.lib")
int main()
{
// 获取适配器信息缓冲区大小
ULONG bufSize = 0;
GetAdaptersAddresses(AF_UNSPEC, GAA_FLAG_INCLUDE_ALL_INTERFACES, NULL, NULL, &bufSize);
// 分配适配器信息缓冲区
PIP_ADAPTER_ADDRESSES adapterAddresses = (PIP_ADAPTER_ADDRESSES)malloc(bufSize);
if (adapterAddresses == NULL)
{
printf("Failed to allocate memory for adapter addresses.\n");
return 1;
}
// 获取适配器信息
DWORD result = GetAdaptersAddresses(AF_UNSPEC, GAA_FLAG_INCLUDE_ALL_INTERFACES, NULL, adapterAddresses, &bufSize);
if (result != ERROR_SUCCESS)
{
printf("Failed to get adapter addresses. Error code: %d\n", result);
free(adapterAddresses);
return 1;
}
// 遍历适配器信息,输出PnPInstanceId
PIP_ADAPTER_ADDRESSES adapter = adapterAddresses;
while (adapter != NULL)
{
printf("Adapter name: %S\n", adapter->FriendlyName);
printf("Adapter PnPInstanceId: %S\n", adapter->PnPInstanceId);
adapter = adapter->Next;
}
// 释放适配器信息缓冲区
free(adapterAddresses);
return 0;
}
```
注意:需要在代码中加入iphlpapi.h头文件,并链接iphlpapi.lib库。