获取电脑USB设备VID和PID等信息。

转自：【VC】 获取电脑USB设备VID和PID等信息。

1，添加头文件和宏定义
[cpp]
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#include <setupapi.h>
#include <initguid.h>
#pragma comment(lib,"setupapi.lib")

DEFINE_GUID (UsbClassGuid, 0xa5dcbf10L, 0x6530, 0x11d2, 0x90, 0x1f, 0x00, 0xc0, 0x4f, 0xb9, 0x51, 0xed);

#include <setupapi.h>
#include <initguid.h>
#pragma comment(lib,"setupapi.lib")

DEFINE_GUID (UsbClassGuid, 0xa5dcbf10L, 0x6530, 0x11d2, 0x90, 0x1f, 0x00, 0xc0, 0x4f, 0xb9, 0x51, 0xed);

[cpp]
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HDEVINFO hDevInfo;
SP_DEVICE_INTERFACE_DATA spDevData;
PSP_DEVICE_INTERFACE_DETAIL_DATA pDetail;
BOOL bRes = TRUE;
int nCount = 0;
hDevInfo = ::SetupDiGetClassDevs((LPGUID)&UsbClassGuid,NULL,NULL,DIGCF_PRESENT|DIGCF_INTERFACEDEVICE);
if (hDevInfo != INVALID_HANDLE_VALUE)
{
pDetail = (PSP_DEVICE_INTERFACE_DETAIL_DATA)::GlobalAlloc(LMEM_ZEROINIT,1024);
pDetail->cbSize = sizeof(SP_DEVICE_INTERFACE_DETAIL_DATA);
while (bRes)
{
spDevData.cbSize = sizeof(SP_DEVICE_INTERFACE_DATA);
bRes = ::SetupDiEnumDeviceInterfaces(hDevInfo,NULL,(LPGUID)&UsbClassGuid,nCount,&spDevData);
if (bRes)
{
bRes = ::SetupDiGetInterfaceDeviceDetail(hDevInfo,&spDevData,pDetail,1024,NULL,NULL);
if (bRes)
{
CString szStr = pDetail->DevicePath;

nCount ++;
}
}
}
::GlobalFree(pDetail);
::SetupDiDestroyDeviceInfoList(hDevInfo);
}

HDEVINFO hDevInfo;
SP_DEVICE_INTERFACE_DATA spDevData;
PSP_DEVICE_INTERFACE_DETAIL_DATA pDetail;
BOOL bRes = TRUE;
int nCount = 0;
hDevInfo = ::SetupDiGetClassDevs((LPGUID)&UsbClassGuid,NULL,NULL,DIGCF_PRESENT|DIGCF_INTERFACEDEVICE);
if (hDevInfo != INVALID_HANDLE_VALUE)
{
	pDetail = (PSP_DEVICE_INTERFACE_DETAIL_DATA)::GlobalAlloc(LMEM_ZEROINIT,1024);
	pDetail->cbSize = sizeof(SP_DEVICE_INTERFACE_DETAIL_DATA);
	while (bRes)
	{			
		spDevData.cbSize = sizeof(SP_DEVICE_INTERFACE_DATA);
		bRes = ::SetupDiEnumDeviceInterfaces(hDevInfo,NULL,(LPGUID)&UsbClassGuid,nCount,&spDevData);
		if (bRes)
		{
			bRes = ::SetupDiGetInterfaceDeviceDetail(hDevInfo,&spDevData,pDetail,1024,NULL,NULL);
			if (bRes)
			{
				CString szStr = pDetail->DevicePath;
												
				nCount ++;
			}
		}
	}
	::GlobalFree(pDetail);
	::SetupDiDestroyDeviceInfoList(hDevInfo);
}

pDetail->DevicePath = 0x00224f04 "\\?\usb#vid_0451&pid_f432#3aff466e374b2516#{a5dcbf10-6530-11d2-901f-00c04fb951ed}"