请问怎样编程实现网卡的禁用和启用？？？万分感谢！！！

[joseph2002]

请问怎样编程实现网卡的禁用和启用？？？万分感谢！！！
一点方向都没有，请帮帮忙啊！！！

[Skt32]

// Hardware.cpp : Implementation of CHardware
#include "stdafx.h"
#include "NetCA_HARDWARE.h"
#include "Hardware.h"
#define UnknownDevice TEXT("<Unknown Device>")

/////////////////////////////////////////////////////////////////////////////
// CHardware

/*****************禁用设备********************************

参数说明: DriverID[in]--设备在注册表中的唯一标识
pVal[out,retval]--返回值，成功为0，失败为1
创建时间： 2002－6－21

**********************************************************/
STDMETHODIMP CHardware::Disable(BSTR DriverID, long *pVal)
{
BOOL ShowHidden = 0;
HDEVINFO hDevInfo = 0;
long len;
//init the value
TIndex = -1;
len = wcstombs(NULL,DriverID,wcslen(DriverID));
len = len + 1;
DrvID = (char *)malloc(len);
memset(DrvID,0,len+1);
wcstombs(DrvID,DriverID,wcslen(DriverID));


if (INVALID_HANDLE_VALUE == (hDevInfo =
SetupDiGetClassDevs(NULL,NULL,NULL,
DIGCF_PRESENT ¦DIGCF_ALLCLASSES)))

{

*pVal = -1;
return S_OK;
}
//get the index of drv in the set
EnumAddDevices(ShowHidden,hDevInfo);

//disable the drv

// if ((IsDisableable(TIndex,hDevInfo))&&(!(TIndex==-1)))
if (!IsDisabled(TIndex,hDevInfo))
if (IsDisableable(TIndex,hDevInfo))
if (StateChange(DICS_DISABLE,TIndex,hDevInfo))
*pVal = 0;
else
*pVal = -1;
else
*pVal = 1;
else
*pVal = 0;

if(hDevInfo)
SetupDiDestroyDeviceInfoList(hDevInfo);
return S_OK;
}

BOOL CHardware::EnumAddDevices(BOOL ShowHidden, HDEVINFO hDevInfo)
{
DWORD i, Status, Problem;

LPTSTR IOName=NULL;
DWORD len=0;
SP_DEVINFO_DATA DeviceInfoData = {sizeof(SP_DEVINFO_DATA)};



//
// Enumerate though all the devices.
//
for (i=0;SetupDiEnumDeviceInfo(hDevInfo,i,&DeviceInfoData);i++)
{
//
// Should we display this device, or move onto the next one.
//
if (CR_SUCCESS != CM_Get_DevNode_Status(&Status, &Problem,
DeviceInfoData.DevInst,0))
{

continue;
}

if (!(ShowHidden ¦ ¦ !((Status & DN_NO_SHOW_IN_DM) ¦ ¦
IsClassHidden(&DeviceInfoData.ClassGuid))))
continue;



//
// Get a friendly name for the device.
//

ConstructDeviceName(hDevInfo,&DeviceInfoData,
&IOName,
(PULONG)&len);
if (strcmp(IOName,DrvID) == 0)
{
TIndex = i;
return TRUE;
}
}
return TRUE;

}

[bingkuijia]

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