SetupDi 获取设备信息的两个方法

#include "stdio.h"
#include <Windows.h>
#include <setupapi.h>

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

void PrintDevicesInfo1()
{
HDEVINFO hDevInfo = SetupDiGetClassDevs(NULL, NULL, NULL, DIGCF_ALLCLASSES);
if (hDevInfo == INVALID_HANDLE_VALUE)
{
printf("SetupDiGetClassDevs Err:%d", GetLastError());
return ;
};

SP_CLASSIMAGELIST_DATA sp_ImageData = {0};
sp_ImageData.cbSize = sizeof(SP_CLASSIMAGELIST_DATA);
SetupDiGetClassImageList(&sp_ImageData);

short wIndex = 0;
SP_DEVINFO_DATA spDevInfoData = {0};
spDevInfoData.cbSize = sizeof(SP_DEVINFO_DATA);
while (1)
{
if (SetupDiEnumDeviceInfo(hDevInfo, wIndex, &spDevInfoData))
{
TCHAR szBuf[MAX_PATH] = {0};
int wImageIdx = 0;
short wItem = 0;
if (!SetupDiGetDeviceRegistryPropertyA(hDevInfo, &spDevInfoData, SPDRP_CLASS, NULL, (PBYTE)szBuf, MAX_PATH, 0))
{
wIndex++;
continue;
};

if (SetupDiGetClassImageIndex(&sp_ImageData, &spDevInfoData.ClassGuid, &wImageIdx))
{
char szName[MAX_PATH] = {0};
DWORD dwRequireSize;
//
if (!SetupDiGetClassDescription(&spDevInfoData.ClassGuid, szBuf, MAX_PATH, &dwRequireSize))
{
wIndex++;
continue;
};
printf("Class:%s\r\n", szBuf);

if (SetupDiGetDeviceRegistryProperty(hDevInfo,&spDevInfoData, SPDRP_FRIENDLYNAME, NULL, (PBYTE)szName, MAX_PATH - 1, 0))
{
printf("Device:%s\r\n\r\n", szName);
}
else if (SetupDiGetDeviceRegistryProperty(hDevInfo,&spDevInfoData, SPDRP_DEVICEDESC, NULL, (PBYTE)szName, MAX_PATH - 1, 0))
{
printf("Device:%s\r\n\r\n", szName);
};
};
}
else
break;
wIndex++;
};
SetupDiDestroyClassImageList(&sp_ImageData);
}
int PrintDevicesInfo2()
{

HDEVINFO hDevInfo;
SP_DEVINFO_DATA DeviceInfoData;
DWORD i;

// 得到所有设备 HDEVINFO
hDevInfo = SetupDiGetClassDevs(NULL, 0, 0, DIGCF_PRESENT | DIGCF_ALLCLASSES );

if (hDevInfo == INVALID_HANDLE_VALUE)
return 0;

// 循环列举
DeviceInfoData.cbSize = sizeof(SP_DEVINFO_DATA);
for (i = 0; SetupDiEnumDeviceInfo(hDevInfo, i, &DeviceInfoData); i++)
{
char szClassBuf[MAX_PATH] = { 0 };
char szDescBuf[MAX_PATH] = { 0 };

// 获取类名
if (!SetupDiGetDeviceRegistryProperty(hDevInfo, &DeviceInfoData, SPDRP_CLASS, NULL, (PBYTE)szClassBuf, MAX_PATH - 1, NULL))
continue;

//获取设备描述信息
if (!SetupDiGetDeviceRegistryProperty(hDevInfo, &DeviceInfoData, SPDRP_DEVICEDESC, NULL, (PBYTE)szDescBuf, MAX_PATH - 1, NULL))
continue;

printf("Class:%s\r\nDesc:%s\r\n\r\n", szClassBuf, szDescBuf);

if (strcmp(szClassBuf, _T("Display")) == 0)
{
printf("Class:%s\r\n  Desc:%s\r\n\r\n", szClassBuf, szDescBuf);
}
}

//  释放
SetupDiDestroyDeviceInfoList(hDevInfo);

return 0;
}