vc如何控制网卡的禁用和激活？？？

Question

vc如何控制网卡的禁用和激活？？？

Answer 1

#include "stdafx.h"
#include <tchar.h>    
#include <windows.h>  
#include <setupapi.h>#pragma comment (lib,"setupapi")#define UnknownDevice TEXT("<Unknown Device>")HDEVINFO hDevInfo = 0;
BOOL StateChange(DWORD NewState, DWORD SelectedItem,HDEVINFO hDevInfo)
{
    SP_PROPCHANGE_PARAMS PropChangeParams = {sizeof(SP_CLASSINSTALL_HEADER)};
    SP_DEVINFO_DATA DeviceInfoData = {sizeof(SP_DEVINFO_DATA)};
    HCURSOR hCursor;    //
    // This may take a while :^(
    //
    hCursor = SetCursor(LoadCursor(NULL, IDC_WAIT));    //
    // Get a handle to the Selected Item.
    //
    if (!SetupDiEnumDeviceInfo(hDevInfo,SelectedItem,&DeviceInfoData))
    {
        printf("EnumDeviceInfo");
        return FALSE;
    }    //
    // Set the PropChangeParams structure.
    //
    PropChangeParams.ClassInstallHeader.InstallFunction = DIF_PROPERTYCHANGE;
    PropChangeParams.Scope = DICS_FLAG_GLOBAL;
    PropChangeParams.StateChange = NewState;     if (!SetupDiSetClassInstallParams(hDevInfo,
        &DeviceInfoData,
        (SP_CLASSINSTALL_HEADER *)&PropChangeParams,
        sizeof(PropChangeParams)))
    {
        printf("SetClassInstallParams");
        SetCursor(hCursor);
        return FALSE;
    }    //
    // Call the ClassInstaller and perform the change.
    //
    if (!SetupDiCallClassInstaller(DIF_PROPERTYCHANGE,
        hDevInfo,
        &DeviceInfoData))
    {
        printf("SetClassInstallParams");
        SetCursor(hCursor);
        return TRUE;
    }    SetCursor(hCursor);
    return TRUE;
}
BOOL IsClassNet( GUID * ClassGuid )
{
    #define MAX_NUM  50    HKEY hKeyClass;
    LONG lRet;
    char ClassType[MAX_NUM];
char NetClass[MAX_NUM] = "Net";
DWORD dwLength = MAX_NUM,dwType = REG_SZ;
    
    if (hKeyClass = SetupDiOpenClassRegKey(ClassGuid,KEY_READ))
    {
        lRet = RegQueryValueEx(hKeyClass, 
            TEXT("Class"), 
            NULL, &dwType, LPBYTE(ClassType), &dwLength);
        RegCloseKey(hKeyClass); if (lRet != ERROR_SUCCESS)
return FALSE; if (!strcmp(ClassType,NetClass))
return TRUE;
    }                                     return FALSE;
}int main(int argc, char* argv[])
{
if (INVALID_HANDLE_VALUE == (hDevInfo = 
                SetupDiGetClassDevs(NULL,NULL,0,
                DIGCF_PRESENT|DIGCF_ALLCLASSES)))
    {
         printf("GetClassDevs");
         return 0;
    }    DWORD i, Status, Problem;
SP_DEVINFO_DATA DeviceInfoData = {sizeof(SP_DEVINFO_DATA)}; HKEY hKeyClass;
char DeviceName[200];
for (i=0;SetupDiEnumDeviceInfo(hDevInfo,i,&DeviceInfoData);i++)
    {
if (IsClassNet(&DeviceInfoData.ClassGuid))
{
printf(" the class's index is %d\n",i);
                           //
//DICS_DISABLE-->禁用网络
//DICS_ENABLE--->恢复网络
//
if (StateChange(DICS_ENABLE,i,hDevInfo))
printf("NetWork stopped"); }
} return 0;
}