genericpower.h

获得当前连接到电脑的USB设备的详细信息 Device Description Hardware Id Compatible Ids Service Class ClassGuid

// GenericPower.h -- Declarations for power management interfaces supported by GENERIC.SYS

// Copyright (C) 1999 by Walter Oney

// All rights reserved

#ifndef GENERICPOWER_H

#define GENERICPOWER_H



#ifndef CTL_CODE

	#pragma message("CTL_CODE undefined. Include winioctl.h or wdm.h")

#endif



// IOCTL interface for generic power management



#define IOCTL_GET_POWERINFO CTL_CODE(FILE_DEVICE_UNKNOWN, 0xFF0, METHOD_BUFFERED, FILE_ANY_ACCESS)

#define IOCTL_SET_POWERINFO CTL_CODE(FILE_DEVICE_UNKNOWN, 0xFF1, METHOD_BUFFERED, FILE_ANY_ACCESS)

#define IOCTL_IDLENOW		CTL_CODE(FILE_DEVICE_UNKNOWN, 0xFF2, METHOD_NEITHER, FILE_ANY_ACCESS)



typedef struct _POWERINFO {

	unsigned long ulConservation;	// idle timeout in conservation mode

	unsigned long ulPerformance;	// idle timeout in performance mode

	unsigned char bWakeup;			// TRUE if wakeup feature should be armed

	unsigned char bCanWake;			// device capable of waking system

	unsigned char bCanIdle;			// device can be idled

	unsigned char bIdle;			// device is idle right now

	} POWERINFO, *PPOWERINFO;



// Devices that use GENERIC.SYS for power managment register an interface with the following GUID:



// {894A7461-A033-11d2-821E-444553540000}

DEFINE_GUID(GUID_GENERIC_POWER, 0x894a7461, 0xa033, 0x11d2, 0x82, 0x1e, 0x44, 0x45, 0x53, 0x54, 0x0, 0x0);



#endif