win32-SetupDiSetClassInstallParamsW的使用

SetupDiSetClassInstallParams函数一般是用来禁用/启用某个设备

比如我们可以禁用网络适配器

/* for Devpkey */
#define INITGUID

/* dependencies */
#pragma comment (lib, "SetupAPI")
#include <windows.h>
#include <SetupAPI.h>
#include <Devpkey.h>
#include <iostream>
#include <stdio.h>
#include <devguid.h>

using namespace std;

VOID SetDeviceState(LPCWSTR lpszHardwareId, DWORD dwState)
{
    HDEVINFO devInfo;

    if (devInfo = SetupDiGetClassDevsW(NULL, NULL, NULL, DIGCF_ALLCLASSES))
    {
        DWORD dwBuffersize;
        SP_DEVINFO_DATA devData;
        DEVPROPTYPE devProptype;
        LPWSTR devBuffer;

        devData.cbSize = sizeof(SP_DEVINFO_DATA);
        for (int i = 0; ; i++)
        {
            SetupDiEnumDeviceInfo(devInfo, i, &devData);
            if (GetLastError() == ERROR_NO_MORE_ITEMS) break;

            /* calculate buffer size */
            SetupDiGetDevicePropertyW(devInfo, &devData, &DEVPKEY_Device_HardwareIds, &devProptype, NULL, 0, &dwBuffersize, 0);

            /* real call */
            if (devBuffer = (LPWSTR)HeapAlloc(GetProcessHeap(), 0, dwBuffersize))
            {
                SetupDiGetDevicePropertyW(devInfo, &devData, &DEVPKEY_Device_HardwareIds, &devProptype, (PBYTE)devBuffer, dwBuffersize, NULL, 0);
//                cout << devBuffer << endl;
//                printf("%s\n", devBuffer);
                if (lstrcmpW(devBuffer, lpszHardwareId) == 0)
                {
                    /* matched */
                    SP_CLASSINSTALL_HEADER ciHeader;
                    ciHeader.cbSize = sizeof(SP_CLASSINSTALL_HEADER);
                    ciHeader.InstallFunction = DIF_PROPERTYCHANGE;

                    SP_PROPCHANGE_PARAMS pcParams;
                    pcParams.ClassInstallHeader = ciHeader;
                    pcParams.StateChange = dwState;
                    pcParams.Scope = DICS_FLAG_GLOBAL;
                    pcParams.HwProfile = 0;

                    BOOL FLAG = SetupDiSetClassInstallParamsW(devInfo, &devData, (PSP_CLASSINSTALL_HEADER)&pcParams, sizeof(SP_PROPCHANGE_PARAMS));
                    SetupDiChangeState(devInfo, &devData);
                }
                HeapFree(GetProcessHeap(), 0, devBuffer);
            }
        }
        SetupDiDestroyDeviceInfoList(devInfo);
    }
}

int main()
{
    SetDeviceState(L"PCI\\VEN_8086&DEV_15E3&SUBSYS_07A11028&REV_00", DICS_DISABLE); 

    return 0;
}

我们可以从设备管理器中查看硬件的ID