//?EnumDevice.cpp?:?Defines?the?entry?point?for?the?console?application.
//

#include?“stdafx.h“
#include??
#include?
#include?
#include?
#include?

using?namespace?std;

//U盤?interface?class?GUID?
GUID?IID_CLASS_WCEUSBS?={0xa5dcbf10?0x6530?0x11d2?0x90?0x1f?0x00?0xc0?0x4f?0xb9?0x51?0xed};

BOOL?SearchDevice（vector?&vDevicePath）
{
	BOOL?bRes?=?FALSE;
	LPGUID?pInterfaceGuid?=?&IID_CLASS_WCEUSBS;

	HDEVINFO?hDeviceInfo?=?SetupDiGetClassDevs（?pInterfaceGuid
		NULL
		NULL
		DIGCF_PRESENT?|?DIGCF_DEVICEINTERFACE）;

	if?（INVALID_HANDLE_VALUE?==?hDeviceInfo）
	{
		goto?Exit;
	}

	//?enum?device?interface
	SP_DEVICE_INTERFACE_DATA?spDevInterData;		//a?structure?of?device?interface?data

	memset（&spDevInterData?0x00?sizeof（SP_DEVICE_INTERFACE_DATA））;
	spDevInterData.cbSize?=?sizeof（SP_DEVICE_INTERFACE_DATA）;

	DWORD?dwIndex?=?0;

	while?（TRUE）
	{
		if?（!SetupDiEnumDeviceInterfaces（?hDeviceInfo
			NULL
			pInterfaceGuid
			dwIndex
			&spDevInterData））

		{
			if?（ERROR_NO_MORE_ITEMS?==?GetLastError（））
			{
				OutputDebugStringW（L“No?more?interface“）;
			}
			else
			{
				OutputDebugStringW（L“SetupDiEnumDeviceInterfaces?Error“）;
			}

			goto?Exit;
		}

		//?get?length?of?interface?detail?info
		DWORD?dwRequiredLength?=?0;		//for?getting?length?of?inter?face?detail?data

		if?（!SetupDiGetDeviceInterfaceDetail（?hDeviceInfo
			&spDevInterData
			NULL?
			0
			&dwRequiredLength
			NULL））
		{
			if?（ERROR_INSUFFICIENT_BUFFER?!=?GetLastError（））
			{
				OutputDebugStringW（L“calculate?require?length“）;
				//goto?Exit;
			}
		}

		//?get?interface?detail?info
		PSP_DEVICE_INTERFACE_DETAIL_DATA?pSpDIDetailData;		//a?pointer?to?interface?detail?data

		pSpDIDetailData?=?NULL;
		pSpDIDetailData?=?（PSP_DEVICE_INTERFACE_DETAIL_DATA）HeapAlloc（GetProcessHeap（）?HEAP_ZERO_MEMORY?dwRequiredLength）;

		if（NULL?==?pSpDIDetailData）
		{
			OutputDebugStringW（L“HeapAlloc?Memory?Failed“）;

			if?（!SetupDiDestroyDeviceInfoList（hDeviceInfo））
			{
				OutputDebugStringW（L“SetupDiDestroyDeviceInfoList?Error“）;
			}

			goto?Exit;
		}

		pSpDIDetailData->cbSize?=?sizeof（SP_DEVICE_INTERFACE_DETAIL_DATA）;

		if?（!SetupDiGetDeviceInterfaceDetail（?hDeviceInfo
			&spDevInterData
			pSpDIDetailData
			dwRequiredLength
			&dwRequiredLength
			NULL））
		{
			OutputDebugStringW（L“SetupDiGetDeviceInterfaceDetail?Error“）;
			goto?Exit;
		}

		wstring?wcsDevicePath?=?pSpDIDetailData->DevicePath;

		vDevicePath.push_back（wcsDevicePath）;?

		if?（NULL?!=?pSpDIDetailData）
		{
			HeapFree（GetProcessHeap（）?0?pSpDIDetailData）;
			pSpDIDetailData?=?NULL;
		}

		dwIndex++;
	}

	if?（!SetupDiDestroyDeviceInfoList（hDeviceInfo））
	{
		OutputDebugStringW（L“SetupDiDestroyDeviceInfoList?Error“）;
	}

	bRes?=?TRUE;

Exit:
	return?bRes;
}



int?_tmain（int?argc?_TCHAR*?argv[]）
{

	vector