在C++程序中開啓和禁用Windows設備的無線網卡的方法

原文連接地址：https://www.jb51.net/article/81340.htm

1.列出當前網卡：SetupDiEnumDeviceInfo
2.找出當前無線網卡的名字（用natvie wifi api）
3.卸載\安裝此驅動
問題：
log爲：SetupDiSetClassInstallParams failed. -536870347
 
完整代碼以下：

  1 // ControlWirelessCard.cpp : Defines the entry point for the console application. 
  2 // 
  3   
  4 #include "stdafx.h" 
  5 #include <windows.h> 
  6 #include <SetupAPI.h> 
  7 #include <devguid.h> 
  8 #include <string> 
  9 #include <cfgmgr32.h> 
 10 #include <wlanapi.h> 
 11 #pragma comment(lib,"setupapi.lib") 
 12 #pragma comment(lib, "wlanapi.lib") 
 13 using namespace std; 
 14   
 15 wstring getWirelessNetworkCardName() 
 16 { 
 17   wstring wirelessName; 
 18   HANDLE hClient = NULL; 
 19   DWORD dwMaxClient = 2;   //   
 20   DWORD dwCurVersion = 0; 
 21   DWORD dwResult = 0; 
 22   DWORD dwRetVal = 0; 
 23   int iRet = 0;   
 24   WCHAR GuidString[39] = {0}; 
 25   unsigned int i; 
 26   
 27   /* variables used for WlanEnumInterfaces */
 28   PWLAN_INTERFACE_INFO_LIST pIfList = NULL; 
 29   PWLAN_INTERFACE_INFO pIfInfo = NULL;   
 30      
 31   dwResult = WlanOpenHandle(dwMaxClient, NULL, &dwCurVersion, &hClient); 
 32   if (dwResult != ERROR_SUCCESS) { 
 33     wprintf(L"WlanOpenHandle failed with error: %u\n", dwResult); 
 34     return wirelessName; 
 35   } 
 36   
 37   dwResult = WlanEnumInterfaces(hClient, NULL, &pIfList); 
 38   if (dwResult != ERROR_SUCCESS) { 
 39     wprintf(L"WlanEnumInterfaces failed with error: %u\n", dwResult); 
 40     return wirelessName;     
 41   } else { 
 42     PWLAN_AVAILABLE_NETWORK_LIST pWLAN_AVAILABLE_NETWORK_LIST = NULL; 
 43     dwResult = WlanGetAvailableNetworkList(hClient, &pIfList->InterfaceInfo[0].InterfaceGuid, 
 44         WLAN_AVAILABLE_NETWORK_INCLUDE_ALL_MANUAL_HIDDEN_PROFILES, 
 45         NULL, &pWLAN_AVAILABLE_NETWORK_LIST); 
 46     if (dwResult != ERROR_SUCCESS) 
 47     {       
 48       printf("WlanGetAvailableNetworkList failed with error: %u\n",dwResult); 
 49       WlanFreeMemory(pWLAN_AVAILABLE_NETWORK_LIST); 
 50       return wirelessName; 
 51     }     
 52   
 53     for (i = 0; i < (int) pIfList->dwNumberOfItems; i++) { 
 54       pIfInfo = (WLAN_INTERFACE_INFO *) &pIfList->InterfaceInfo[i]; 
 55       iRet = StringFromGUID2(pIfInfo->InterfaceGuid, (LPOLESTR) &GuidString,  
 56         sizeof(GuidString)/sizeof(*GuidString));  
 57     
 58       wirelessName = pIfInfo->strInterfaceDescription; 
 59     } 
 60   } 
 61   return wirelessName; 
 62 } 
 63   
 64 BOOL changeStatus(DWORD NewStatus, DWORD SelectedItem, HDEVINFO hDevInfo) 
 65 { 
 66   LPTSTR lpszMsg = NULL; 
 67   HCURSOR hCursor = NULL; 
 68   try
 69   { 
 70     SP_PROPCHANGE_PARAMS PropChangeParams = {sizeof(SP_CLASSINSTALL_HEADER)}; 
 71     SP_DEVINFO_DATA DeviceInfoData = {sizeof(SP_DEVINFO_DATA)};  
 72   
 73     hCursor = SetCursor(LoadCursor(NULL, IDC_WAIT)); 
 74     // Get a handle to the Selected Item. 
 75     if (!SetupDiEnumDeviceInfo(hDevInfo, SelectedItem, &DeviceInfoData)) 
 76     { 
 77       wprintf(L"SetupDiEnumDeviceInfo failed. %d\n",GetLastError()); 
 78       throw lpszMsg; 
 79     } 
 80   
 81     // Set the PropChangeParams structure. 
 82     PropChangeParams.ClassInstallHeader.InstallFunction = DIF_PROPERTYCHANGE; 
 83     PropChangeParams.Scope = DICS_FLAG_GLOBAL; 
 84     PropChangeParams.StateChange = NewStatus; 
 85   
 86     if (!SetupDiSetClassInstallParams(hDevInfo, &DeviceInfoData, (SP_CLASSINSTALL_HEADER *)&PropChangeParams, 
 87     sizeof(PropChangeParams))) 
 88     { 
 89       wprintf(L"SetupDiSetClassInstallParams failed. %d\n",GetLastError()); 
 90       throw lpszMsg; 
 91     } 
 92     // Call the ClassInstaller and perform the change. 
 93     if (!SetupDiCallClassInstaller(DIF_PROPERTYCHANGE,hDevInfo,&DeviceInfoData)) 
 94     { 
 95       wprintf(L"SetupDiCallClassInstaller failed. %d\n",GetLastError()); 
 96       throw lpszMsg; 
 97     } 
 98     SetCursor(hCursor);  
 99     return TRUE; 
100   } 
101   catch (TCHAR * pszError) 
102   { 
103     SetCursor(hCursor); 
104     if (NULL != lpszMsg) 
105     { 
106       LocalFree((HLOCAL)lpszMsg); 
107     }  
108     return FALSE; 
109   }  
110 } 
111   
112 int _tmain(int argc, _TCHAR* argv[]) 
113 {   
114   LPTSTR lpszMsg = NULL; 
115    try
116    { 
117      /* 
118      TCHAR * GUIDString = NULL; 
119      GUID guid; 
120      ZeroMemory(&guid, sizeof(GUID)); 
121      GUIDString = _T("4d36e972-e325-11ce-bfc1-08002be10318"); 
122      UuidFromString((unsigned char *)GUIDString, &guid); 
123      */
124      //GUID guid = getWirelessNetworkCardGUID(); 
125      HDEVINFO hDevInfo = SetupDiGetClassDevs(&GUID_DEVCLASS_NET,/*L"WIRELESS"*/NULL,NULL,DIGCF_PRESENT); 
126      //HDEVINFO hDevInfo = SetupDiGetClassDevs(&guid,/*L"WIRELESS"*/NULL,NULL,DIGCF_PRESENT); 
127      if (INVALID_HANDLE_VALUE == hDevInfo) 
128      { 
129       wprintf(L"INVALID_HANDLE_VALUE"); 
130       return -1; 
131      } 
132   
133      DWORD i; 
134      int Icount=0; 
135      SP_DEVINFO_DATA DeviceInfoData; 
136      ZeroMemory(&DeviceInfoData, sizeof(SP_DEVINFO_DATA)); 
137      DeviceInfoData.cbSize = sizeof(SP_DEVINFO_DATA); 
138   
139      for (i = 0; SetupDiEnumDeviceInfo(hDevInfo, i, &DeviceInfoData); ++i) 
140      { 
141        //Get DeviceInfo       
142        LPTSTR buffer = NULL; 
143        DWORD buffersize = 0; 
144        DWORD Status, Problem;  
145        BOOL bDisabled = FALSE;  
146       while (!SetupDiGetDeviceRegistryProperty( 
147           hDevInfo, 
148           &DeviceInfoData, 
149           SPDRP_DEVICEDESC, //Read the names of the designated card 
150           NULL, 
151           (PBYTE) buffer, 
152           buffersize, 
153           &buffersize) 
154         ) 
155        { 
156          if ( GetLastError() == ERROR_INSUFFICIENT_BUFFER ) 
157          {         
158            if (buffer) LocalFree(buffer); 
159           buffer=(LPTSTR)LocalAlloc(LPTR,buffersize);  
160          } 
161          else
162          {  
163           wprintf(L"read network card failed!"); 
164          } 
165        } 
166   
167        std::wstring strEthernet = buffer; 
168        //wprintf(L"the buffer is %ws\n",buffer); 
169   
170        wstring wirelessName = getWirelessNetworkCardName(); 
171        if(wirelessName.empty()) 
172        { 
173          wprintf(L"wirelessName IS empty\n"); 
174          return -1; 
175        } 
176        //wprintf(L"wirelessName is %ws\n",wirelessName); 
177   
178        if(wirelessName == buffer) 
179        { 
180          wprintf(L"Found the wireless card: %ws\n",wirelessName); 
181          if (int i= CM_Get_DevNode_Status(&Status, &Problem, DeviceInfoData.DevInst,0) != CR_SUCCESS)  
182          {   
183            wprintf(L"CM_Get_DevNode_Status failed. %d\n",GetLastError()); 
184           throw "failed\n"; 
185          } 
186          if (!((Status & DN_HAS_PROBLEM) && (CM_PROB_DISABLED == Problem)))  
187          {  
188            bDisabled = FALSE; 
189          }  
190          if ((Status & DN_HAS_PROBLEM) && (CM_PROB_DISABLED == Problem))  
191          {  
192            bDisabled = TRUE;  
193          }  
194          if(bDisabled==FALSE) 
195          {  
196            wprintf(L"disable the network card\n"); 
197            changeStatus(DICS_DISABLE, i, hDevInfo);//disable 
198          } 
199          if(bDisabled==TRUE) 
200          {  
201            wprintf(L"enable the network card\n"); 
202            changeStatus(DICS_ENABLE, i, hDevInfo);// enable 
203          } 
204        }      
205      } 
206      return SetupDiDestroyDeviceInfoList(hDevInfo); 
207    } 
208    catch (TCHAR * pszError) 
209    {   
210      if (NULL != lpszMsg) 
211      { 
212       LocalFree((HLOCAL)lpszMsg); 
213      }  
214     return FALSE; 
215    } 
216   return 0; 

一些常見錯誤解決
1、
從錯誤返回值入手。
-536870347，用windows自帶計算器，選擇程序員模式，將此十進制轉換爲16進製爲E0000235.
用此錯誤號搜索，就是大名鼎鼎的32位程序跑在64位系統中報錯。
雖然我用的64位win8下VS編譯的程序，可是編譯選項中仍然是WIN32程序。那麼咱們只須要修改爲x64編譯便可，操做以下。
BUILD-->Configuration Manager...-->找到要修改的project，將platform選擇爲x64.
若是沒有，說明沒有添加x64編譯項，接着上面，在platform中選擇<New...> -->New platform下選x64-->OK.
2、
編譯64位程序，運行之。
仍然報錯，返回值是5.ACCESS_DENIED.
權限不夠，咱們須要申請高權限。以下申請Admin權限：
你項目的Properties-->Linker-->Manifest File-->UAC Execution Level選requireAdministrator。
3、
繼續運行。卸載無線網卡驅動成功。
可是上一篇的程序仍然有個問題，因爲驅動卸載了，就不能用wlan api獲得無線網卡名稱，
因此程序加載無線網卡驅動就會失敗。
咱們能夠用關鍵字「Wireless Network Adapter」來查找無線網卡，省掉使用wlan api那一步。