使用Setup API枚举系统设备

#pragma comment(lib, "Setupapi.lib")
#pragma comment(lib, "shlwapi.lib")
      
#include "stdafx.h"
#include <Windows.h>
#include <setupapi.h>
#include <devguid.h>
#include <regstr.h>
#include <shlwapi.h>
#include <Rpc.h>
      
int main( int argc, char *argv[ ], char *envp[ ] )
{
    HDEVINFO hDevInfo;
    SP_DEVINFO_DATA DeviceInfoData;
    DWORD i;
    char szGUID[] = _T("36FC9E60-C465-11CF-8056-444553540000");
    GUID guid;
    UuidFromString((unsigned char *)szGUID, &guid);
    // 枚举指定类型设备
    hDevInfo = SetupDiGetClassDevs(&guid,
        0,        // Enumerator
        0,
        DIGCF_ALLCLASSES | DIGCF_PRESENT );
    if (hDevInfo == INVALID_HANDLE_VALUE)
    {
        // Insert error handling here.
        return 1;
    }
    DeviceInfoData.cbSize = sizeof(SP_DEVINFO_DATA);
    // 枚举指定设备信息集合的成员，并将数据放在PSP_DEVINFO_DATA中
    for (i=0; SetupDiEnumDeviceInfo(hDevInfo, i, &DeviceInfoData); i++)
    {
        DWORD DataT;
        LPTSTR buffer = NULL;
        DWORD buffersize = 0;
              
        // 获取设备信息
        while (!SetupDiGetDeviceRegistryProperty(
            hDevInfo,
            &DeviceInfoData,
            SPDRP_FRIENDLYNAME,
            &DataT,
            (PBYTE)buffer,
            buffersize,
            &buffersize))
        {
            if (GetLastError() == ERROR_INSUFFICIENT_BUFFER)
            {
                if (buffer) LocalFree(buffer);
                buffer = (LPTSTR)LocalAlloc(LPTR,buffersize);
            }
            else
            {
                break;
            }
        }
        if(buffer)
        {
            LONG nLen = strlen(buffer)+10;
            char* pStr = new char[nLen];
            strcpy_s(pStr, nLen, "Result:  ");
            strcat_s(pStr, nLen, buffer);
      
            if( StrStr(pStr, _T("WD"))!=NULL)
            {
                _tprintf(pStr);
                _tprintf(_T("\n"));
            }
      
            delete []pStr;
        }
    }
    if ( GetLastError()!=NO_ERROR && GetLastError()!=ERROR_NO_MORE_ITEMS )
        return 1;
    SetupDiDestroyDeviceInfoList(hDevInfo);
    return 0;
}

如果配合WM_DEVICECHANGE消息，可以完成对U盘等设备的检测(注：在Win Me只能收到nEventType＝7的消息，这时候要注意自己判断)

BOOL OnDeviceChange(UINT nEventType, DWORD_PTR dwData)
{
    switch(nEventType)
    {
    case DBT_DEVICEARRIVAL:                // 设备插入并可用
        break;
    
    case DBT_DEVICEREMOVECOMPLETE:        // 设备拨出
        break;
    }
}

以下是一些设备在系统中的GUID，有的不会翻译，暂用英文:)

4D36E980-E325-11CE-BFC1-08002BE10318 软驱

4D36E965-E325-11CE-BFC1-08002BE10318 光驱

4D36E97D-E325-11CE-BFC1-08002BE10318 系统设备

6D807884-7D21-11CF-801C-08002BE10318 磁带机

36FC9E60-C465-11CF-8056-444553540000 USB

4D36E964-E325-11CE-BFC1-08002BE10318 适配器

D45B1C18-C8FA-11D1-9F77-0000F805F530 APMSUPPORT

E0CBF06C-CD8B-4647-BB8A-253B43F0F974 蓝牙设备

4D36E966-E325-11CE-BFC1-08002BE10318 电脑

6BDD1FC2-810F-11D0-BEC7-08002BE2092F 解码器

6BDD1FC3-810F-11D0-BEC7-08002BE2092F GPS——Global Positioning System

4D36E976-E325-11CE-BFC1-08002BE10318 No Driver

8ECC055D-047F-11D1-A537-0000F8753ED1 Non-plug And Play Drivers

4D36E97E-E325-11CE-BFC1-08002BE10318 Other Devices

4D36E97A-E325-11CE-BFC1-08002BE10318 Printer Upgrade

4D36E97C-E325-11CE-BFC1-08002BE10318 声音设备