1.列出当前网卡：SetupDiEnumDeviceInfo
2.找出当前无线网卡的名字（用natvie wifi api）
3.卸载\安装此驱动
问题：
log为：SetupDiSetClassInstallParams failed. -536870347
完整代码如下：
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// 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;
}
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一些常见错误解决
一、
从错误返回值入手。
-536870347，用windows自带计算器，选择程序员模式，将此十进制转换为16进制为E0000235.
用此错误号搜索，就是大名鼎鼎的32位程序跑在64位系统中报错。
虽然我用的64位win8下VS编译的程序，但是编译选项中仍然是WIN32程序。那么我们只需要修改成x64编译即可，操作如下。
BUILD-->Configuration Manager...-->找到要修改的project，将platform选择为x64.
如果没有，说明没有添加x64编译项，接着上面，在platform中选择<New...> -->New platform下选x64-->OK.
二、
编译64位程序，运行之。
仍然报错，返回值是5.ACCESS_DENIED.
权限不够，我们需要申请高权限。如下申请Admin权限：
你项目的Properties-->Linker-->Manifest File-->UAC Execution Level选requireAdministrator。
三、
继续运行。卸载无线网卡驱动成功。
但是上一篇的程序仍然有个问题，由于驱动卸载了，就不能用wlan api得到无线网卡名称，
所以程序加载无线网卡驱动就会失败。
我们可以用关键字“Wireless Network Adapter”来查找无线网卡，省掉使用wlan api那一步。