请问在vista下如何disable网卡


下面这段代码在xp下是可以正确的disable掉指定的网卡的
但是在vista下，尽管所有的API返回都正确
却无法把网卡disable
请问大侠在vista下是否不能用这种办法
或者还有其他的办法达到相同的功能，谢谢！！hDevInfo = SetupDiGetClassDevs(NULL, NULL, hwndParent, DIGCF_PRESENT|DIGCF_ALLCLASSES); 
// retrieves a context structure for a device information element of the specified device 
// information set.
for (i= 0; SetupDiEnumDeviceInfo(hDevInfo, i, &DeviceInfoData); i++)
{ 
if (SetupDiGetDeviceRegistryProperty(hDevInfo,                                                                                   &DeviceInfoData,                                                                             SPDRP_DEVICEDESC,                                                                            NULL, 
                                   (UCHAR*)&szDesc[0],                                                                          sizeof(szDesc)-1, 
                                  &dwRet))
{                           
if (!strcmp(szDesc, (char*)strDesc))  // Found Device
{
// Set the PropChangeParams structure to Disable.
  PropChangeParams.ClassInstallHeader.InstallFunction = DIF_PROPERTYCHANGE;
  PropChangeParams.Scope = DICS_FLAG_CONFIGSPECIFIC;
  PropChangeParams.StateChange = DICS_DISABLE; if (SetupDiSetClassInstallParams(hDevInfo,                                                                                    &DeviceInfoData,                                                                             (SP_CLASSINSTALL_HEADER *)&PropChangeParams,
                                 sizeof(PropChangeParams)))
{
   // Call the ClassInstaller and perform the change.
   if (SetupDiCallClassInstaller(   DIF_PROPERTYCHANGE, hDevInfo,&DeviceInfoData))
   {
   }}