在C++程序中开启和禁用Windows设备的无线网卡的方法

// ControlWirelessCard.cpp : Defines the entry point for the console application. //  #include "stdafx.h" #include <windows.h> #include <SetupAPI.h> #include <devguid.h> #include <string> #include <cfgmgr32.h> #include <wlanapi.h> #pragma comment(lib,"setupapi.lib") #pragma comment(lib, "wlanapi.lib") using namespace std;  wstring getWirelessNetworkCardName() {   wstring wirelessName;   HANDLE hClient = NULL;   DWORD dwMaxClient = 2;   //     DWORD dwCurVersion = 0;   DWORD dwResult = 0;   DWORD dwRetVal = 0;   int iRet = 0;     WCHAR GuidString[39] = {0};   unsigned int i;    /* variables used for WlanEnumInterfaces */   PWLAN_INTERFACE_INFO_LIST pIfList = NULL;   PWLAN_INTERFACE_INFO pIfInfo = NULL;         dwResult = WlanOpenHandle(dwMaxClient, NULL, &dwCurVersion, &hClient);   if (dwResult != ERROR_SUCCESS) {     wprintf(L"WlanOpenHandle failed with error: %u/n", dwResult);     return wirelessName;   }    dwResult = WlanEnumInterfaces(hClient, NULL, &pIfList);   if (dwResult != ERROR_SUCCESS) {     wprintf(L"WlanEnumInterfaces failed with error: %u/n", dwResult);     return wirelessName;       } else {     PWLAN_AVAILABLE_NETWORK_LIST pWLAN_AVAILABLE_NETWORK_LIST = NULL;     dwResult = WlanGetAvailableNetworkList(hClient, &pIfList->InterfaceInfo[0].InterfaceGuid,         WLAN_AVAILABLE_NETWORK_INCLUDE_ALL_MANUAL_HIDDEN_PROFILES,         NULL, &pWLAN_AVAILABLE_NETWORK_LIST);     if (dwResult != ERROR_SUCCESS)     {             printf("WlanGetAvailableNetworkList failed with error: %u/n",dwResult);       WlanFreeMemory(pWLAN_AVAILABLE_NETWORK_LIST);       return wirelessName;     }          for (i = 0; i < (int) pIfList->dwNumberOfItems; i++) {       pIfInfo = (WLAN_INTERFACE_INFO *) &pIfList->InterfaceInfo[i];       iRet = StringFromGUID2(pIfInfo->InterfaceGuid, (LPOLESTR) &GuidString,          sizeof(GuidString)/sizeof(*GuidString));           wirelessName = pIfInfo->strInterfaceDescription;     }   }   return wirelessName; }  BOOL changeStatus(DWORD NewStatus, DWORD SelectedItem, HDEVINFO hDevInfo) {   LPTSTR lpszMsg = NULL;   HCURSOR hCursor = NULL;   try   {     SP_PROPCHANGE_PARAMS PropChangeParams = {sizeof(SP_CLASSINSTALL_HEADER)};     SP_DEVINFO_DATA DeviceInfoData = {sizeof(SP_DEVINFO_DATA)};       hCursor = SetCursor(LoadCursor(NULL, IDC_WAIT));     // Get a handle to the Selected Item.     if (!SetupDiEnumDeviceInfo(hDevInfo, SelectedItem, &DeviceInfoData))     {       wprintf(L"SetupDiEnumDeviceInfo failed. %d/n",GetLastError());       throw lpszMsg;     }      // Set the PropChangeParams structure.     PropChangeParams.ClassInstallHeader.InstallFunction = DIF_PROPERTYCHANGE;     PropChangeParams.Scope = DICS_FLAG_GLOBAL;     PropChangeParams.StateChange = NewStatus;      if (!SetupDiSetClassInstallParams(hDevInfo, &DeviceInfoData, (SP_CLASSINSTALL_HEADER *)&PropChangeParams,     sizeof(PropChangeParams)))     {       wprintf(L"SetupDiSetClassInstallParams failed. %d/n",GetLastError());       throw lpszMsg;     }     // Call the ClassInstaller and perform the change.     if (!SetupDiCallClassInstaller(DIF_PROPERTYCHANGE,hDevInfo,&DeviceInfoData))     {       wprintf(L"SetupDiCallClassInstaller failed. %d/n",GetLastError());       throw lpszMsg;     }     SetCursor(hCursor);      return TRUE;   }   catch (TCHAR * pszError)   {     SetCursor(hCursor);     if (NULL != lpszMsg)     {       LocalFree((HLOCAL)lpszMsg);     }      return FALSE;   }  }  int _tmain(int argc, _TCHAR* argv[]) {     LPTSTR lpszMsg = NULL;    try    {      /*      TCHAR * GUIDString = NULL;      GUID guid;      ZeroMemory(&guid, sizeof(GUID));      GUIDString = _T("4d36e972-e325-11ce-bfc1-08002be10318");      UuidFromString((unsigned char *)GUIDString, &guid);      */      //GUID guid = getWirelessNetworkCardGUID();      HDEVINFO hDevInfo = SetupDiGetClassDevs(&GUID_DEVCLASS_NET,/*L"WIRELESS"*/NULL,NULL,DIGCF_PRESENT);      //HDEVINFO hDevInfo = SetupDiGetClassDevs(&guid,/*L"WIRELESS"*/NULL,NULL,DIGCF_PRESENT);      if (INVALID_HANDLE_VALUE == hDevInfo)      {       wprintf(L"INVALID_HANDLE_VALUE");       return -1;      }       DWORD i;      int Icount=0;      SP_DEVINFO_DATA DeviceInfoData;      ZeroMemory(&DeviceInfoData, sizeof(SP_DEVINFO_DATA));      DeviceInfoData.cbSize = sizeof(SP_DEVINFO_DATA);       for (i = 0; SetupDiEnumDeviceInfo(hDevInfo, i, &DeviceInfoData); ++i)      {        //Get DeviceInfo              LPTSTR buffer = NULL;        DWORD buffersize = 0;        DWORD Status, Problem;         BOOL bDisabled = FALSE;        while (!SetupDiGetDeviceRegistryProperty(           hDevInfo,           &DeviceInfoData,           SPDRP_DEVICEDESC, //Read the names of the designated card           NULL,           (PBYTE) buffer,           buffersize,           &buffersize)         )        {          if ( GetLastError() == ERROR_INSUFFICIENT_BUFFER )          {                    if (buffer) LocalFree(buffer);           buffer=(LPTSTR)LocalAlloc(LPTR,buffersize);           }          else          {            wprintf(L"read network card failed!");          }        }         std::wstring strEthernet = buffer;        //wprintf(L"the buffer is %ws/n",buffer);         wstring wirelessName = getWirelessNetworkCardName();        if(wirelessName.empty())        {          wprintf(L"wirelessName IS empty/n");          return -1;        }        //wprintf(L"wirelessName is %ws/n",wirelessName);         if(wirelessName == buffer)        {          wprintf(L"Found the wireless card: %ws/n",wirelessName);          if (int i= CM_Get_DevNode_Status(&Status, &Problem, DeviceInfoData.DevInst,0) != CR_SUCCESS)           {              wprintf(L"CM_Get_DevNode_Status failed. %d/n",GetLastError());           throw "failed/n";          }          if (!((Status & DN_HAS_PROBLEM) && (CM_PROB_DISABLED == Problem)))           {             bDisabled = FALSE;          }           if ((Status & DN_HAS_PROBLEM) && (CM_PROB_DISABLED == Problem))           {             bDisabled = TRUE;           }           if(bDisabled==FALSE)          {             wprintf(L"disable the network card/n");            changeStatus(DICS_DISABLE, i, hDevInfo);//disable          }          if(bDisabled==TRUE)          {             wprintf(L"enable the network card/n");            changeStatus(DICS_ENABLE, i, hDevInfo);// enable          }        }           }      return SetupDiDestroyDeviceInfoList(hDevInfo);    }    catch (TCHAR * pszError)    {        if (NULL != lpszMsg)      {       LocalFree((HLOCAL)lpszMsg);      }      return FALSE;    }   return 0; }