网卡禁用 启用演示程序

#include "StdAfx.h"#include <windows.h>#include <setupapi.h>#include <tchar.h>#include <stdio.h>#include <setupapi.h>#pragma comment(lib,"ws2_32.lib")#pragma comment(lib,"setupapi.lib")#define UnknownDevice TEXT("<Unknown Device>")//NewState = DICS_DISABLE–>禁用网络//NewState = DICS_ENABLE—>恢复网络BOOL StateChange(DWORD NewState, DWORD SelectedItem,HDEVINFO hDevInfo){SP_PROPCHANGE_PARAMS PropChangeParams = {sizeof(SP_CLASSINSTALL_HEADER)};SP_DEVINFO_DATA DeviceInfoData = {sizeof(SP_DEVINFO_DATA)};// Get a handle to the Selected Item.if (!SetupDiEnumDeviceInfo(hDevInfo,SelectedItem,&DeviceInfoData)){printf("SetupDiEnumDeviceInfo FALSE");return FALSE;}// Set the PropChangeParams structure.PropChangeParams.ClassInstallHeader.InstallFunction = DIF_PROPERTYCHANGE;PropChangeParams.Scope = DICS_FLAG_GLOBAL;PropChangeParams.StateChange = NewState;if (!SetupDiSetClassInstallParams(hDevInfo,&DeviceInfoData,(SP_CLASSINSTALL_HEADER *)&PropChangeParams,sizeof(PropChangeParams))){printf("SetupDiSetClassInstallParams FALSE");return FALSE;}// Call the ClassInstaller and perform the change.if (!SetupDiCallClassInstaller(DIF_PROPERTYCHANGE,hDevInfo,&DeviceInfoData)){printf("SetupDiCallClassInstaller TRUE");return TRUE;}return TRUE;}//判断设备Guid对应的设备是否为网卡设备//TRUE 网卡//FALSE 非网卡BOOL IsClassNet( GUID * ClassGuid ){#define MAX_NUM 50HKEY hKeyClass;LONG lRet;char ClassType[MAX_NUM];char NetClass[MAX_NUM] = "Net";DWORD dwLength = MAX_NUM,dwType = REG_SZ;if (hKeyClass = SetupDiOpenClassRegKey(ClassGuid,KEY_READ)){lRet = RegQueryValueEx(hKeyClass, TEXT("Class"), NULL, &dwType, LPBYTE(ClassType), &dwLength);RegCloseKey(hKeyClass);if (lRet != ERROR_SUCCESS)return FALSE;if (!strcmp(ClassType,NetClass))return TRUE;} return FALSE;}int main(int argc, char* argv[]){HDEVINFO hDevInfo = 0;hDevInfo = SetupDiGetClassDevs(NULL,NULL,0,DIGCF_PRESENT|DIGCF_ALLCLASSES);if (hDevInfo == INVALID_HANDLE_VALUE){printf("SetupDiGetClassDevs");return 0;}SP_DEVINFO_DATA DeviceInfoData = {sizeof(SP_DEVINFO_DATA)};for (DWORD i=0;SetupDiEnumDeviceInfo(hDevInfo,i,&DeviceInfoData);i++){if (IsClassNet(&DeviceInfoData.ClassGuid)){//DICS_DISABLE–>禁用网络//DICS_ENABLE—>恢复网络if (StateChange(DICS_ENABLE,i,hDevInfo))printf("已经禁用/r/n");}}return 0;} 不解释 看代码