C++启用禁用网卡的代码

以下是使用C++实现启用禁用网卡的示例代码：

#include <WinSock2.h>
#include <Iphlpapi.h>
#include <iostream>
#pragma comment(lib, "iphlpapi.lib")

int main() {
    // 获取所有网卡信息
    DWORD dwSize = 0;
    DWORD dwRetVal = 0;
    PIP_ADAPTER_INFO pAdapterInfo = NULL;
    GetAdaptersInfo(NULL, &dwSize);
    pAdapterInfo = (PIP_ADAPTER_INFO)malloc(dwSize);
    if (pAdapterInfo == NULL) {
        std::cout << "Failed to allocate memory for adapter info" << std::endl;
        return 1;
    }
    if (GetAdaptersInfo(pAdapterInfo, &dwSize) != ERROR_SUCCESS) {
        std::cout << "Failed to get adapter info" << std::endl;
        free(pAdapterInfo);
        return 1;
    }

    // 输出所有网卡信息并让用户选择
    std::cout << "Available network adapters:" << std::endl;
    PIP_ADAPTER_INFO currentAdapter = pAdapterInfo;
    int adapterIndex = 0;
    while (currentAdapter) {
        std::cout << adapterIndex << ". " << currentAdapter->AdapterName << " - " << currentAdapter->Description << std::endl;
        currentAdapter = currentAdapter->Next;
        adapterIndex++;
    }
    std::cout << "Enter the index of the adapter to enable/disable (0-" << adapterIndex - 1 << "): ";
    int chosenIndex;
    std::cin >> chosenIndex;
    if (chosenIndex < 0 || chosenIndex >= adapterIndex) {
        std::cout << "Invalid adapter index" << std::endl;
        free(pAdapterInfo);
        return 1;
    }
    currentAdapter = pAdapterInfo;
    for (int i = 0; i < chosenIndex; i++) {
        currentAdapter = currentAdapter->Next;
    }

    // 获取网卡状态并启用/禁用
    MIB_IFROW ifRow;
    memset(&ifRow, 0, sizeof(ifRow));
    ifRow.dwIndex = currentAdapter->Index;
    dwRetVal = GetIfEntry(&ifRow);
    if (dwRetVal != NO_ERROR) {
        std::cout << "Failed to get interface info" << std::endl;
        free(pAdapterInfo);
        return 1;
    }
    if (ifRow.dwAdminStatus == IF_ADMIN_STATUS_UP) {
        std::cout << "Disabling adapter..." << std::endl;
        ifRow.dwAdminStatus = IF_ADMIN_STATUS_DOWN;
    } else {
        std::cout << "Enabling adapter..." << std::endl;
        ifRow.dwAdminStatus = IF_ADMIN_STATUS_UP;
    }
    dwRetVal = SetIfEntry(&ifRow);
    if (dwRetVal != NO_ERROR) {
        std::cout << "Failed to set interface info" << std::endl;
        free(pAdapterInfo);
        return 1;
    }

    std::cout << "Success!" << std::endl;
    free(pAdapterInfo);
    return 0;
}

上述代码使用Winsock API和IP Helper API获取网卡信息，并允许用户选择要启用/禁用的网卡。然后，它使用SetIfEntry函数启用/禁用选定的网卡。注意，此方法仅适用于Windows操作系统。