#include <windows.h>
  

  #include <setupapi.h>
  

  #pragma comment( lib,"ws2_32.lib" )
  

  #pragma comment( lib,"setupapi.lib" )
  

  

  BOOL DisableNetCard(bool bStatus, char szNetName[], char szNetType[])
  

  {
  

  IN LPTSTR DeviceDesc;
  

  DeviceDesc=szNetName;
  

  DWORD NewState;
  

  if(bStatus)
  

  {
  

  NewState=DICS_DISABLE;//禁用
  

  }
  

  else
  

  {
  

  NewState=DICS_ENABLE;//启用
  

  }
  

  

  //调用ddk函数，来禁用网卡
  

  

  DWORD i,err;
  

  BOOL Found=false;
  

  

  HDEVINFO hDevInfo;
  

  SP_DEVINFO_DATA spDevInfoData;
  

  

  //访问系统的硬件库
  

  //DIGCF_PRESENT
  

  //"PCMCIA"
  

  // hDevInfo=SetupDiGetClassDevs(NULL,"PCI",NULL,DIGCF_ALLCLASSES );
  

  hDevInfo=SetupDiGetClassDevs(NULL,szNetType,NULL,DIGCF_ALLCLASSES );
  

  if (hDevInfo == INVALID_HANDLE_VALUE)
  

  {
  

  

  }
  

  

  //枚举硬件，获得需要的接口
  

  spDevInfoData.cbSize = sizeof(SP_DEVINFO_DATA);
  

  for (i=0;SetupDiEnumDeviceInfo(hDevInfo,i,&spDevInfoData;);i++)
  

  {
  

  DWORD DataT;
  

  LPTSTR p,buffer = NULL;
  

  DWORD buffersize = 0;
  

  

  //获得硬件的属性值
  

  

  //SPDRP_DEVICEDESC：根据设备名称
  

  //SPDRP_HARDWAREID：根据硬件设备Component ID
  

  //
  

  while (!SetupDiGetDeviceRegistryProperty(
  

  hDevInfo,
  

  &spDevInfoData;,
  

  SPDRP_DEVICEDESC,
  

  &DataT;,
  

  (PBYTE)buffer,
  

  buffersize,
  

  &buffersize;))
  

  {
  

  if (GetLastError() == ERROR_INVALID_DATA)
  

  {
  

  //不存在device desc. Continue.
  

  break;
  

  }
  

  else if (GetLastError() == ERROR_INSUFFICIENT_BUFFER)
  

  {
  

  //buffer size不对.
  

  if (buffer)
  

  LocalFree(buffer);
  

  buffer =(char *) LocalAlloc(LPTR,buffersize);
  

  }
  

  else
  

  {
  

  //未知错误
  

  goto cleanup_DeviceInfo;
  

  }
  

  }
  

  

  if (GetLastError() == ERROR_INVALID_DATA)
  

  continue;
  

  

  //比较，找到和配置设备相同的项
  

  for (p=buffer;*p&&(p<&buffer;[buffersize]);p+=lstrlen(p)+sizeof(TCHAR))
  

  {
  

  

  // if (!_tcscmp(HardwareId,p))
  

  if (!_tcscmp(DeviceDesc,p))
  

  {
  

  //找到网卡
  

  Found = TRUE;
  

  break;
  

  }
  

  }
  

  

  if (buffer)
  

  LocalFree(buffer);
  

  

  //如果相等
  

  if (Found)
  

  {
  

  //禁用该设备
  

  

  SP_PROPCHANGE_PARAMS spPropChangeParams;
  

  

  spPropChangeParams.ClassInstallHeader.cbSize=sizeof(SP_CLASSINSTALL_HEADER);
  

  spPropChangeParams.ClassInstallHeader.InstallFunction=DIF_PROPERTYCHANGE;
  

  spPropChangeParams.Scope=DICS_FLAG_GLOBAL;
  

  spPropChangeParams.StateChange=NewState;//禁用：DICS_DISABLE，DICS_ENABLE启用
  

  

  //
  

  if(!SetupDiSetClassInstallParams(hDevInfo,&spDevInfoData;,(SP_CLASSINSTALL_HEADER *)&spPropChangeParams;,sizeof(spPropChangeParams)))
  

  {
  

  DWORD errorcode=GetLastError();
  

  }
  

  

  if(!SetupDiCallClassInstaller(DIF_PROPERTYCHANGE,hDevInfo,&spDevInfoData;))
  

  {
  

  DWORD errorcode=GetLastError();
  

  }
  

  

  switch(NewState)
  

  {
  

  case DICS_DISABLE:
  

  AfxMessageBox("成功禁用网络！");
  

  break;
  

  case DICS_ENABLE:
  

  AfxMessageBox("成功启用网络！");
  

  break;
  

  }
  

  

  break;
  

  }
  

  

  }
  

  

  //退出时，清理工作环境
  

  cleanup_DeviceInfo:
  

  err = GetLastError();
  

  SetupDiDestroyDeviceInfoList(hDevInfo);
  

  SetLastError(err);
  

  }