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/*++ BUILD Version: 0001 // Increment this if a change has global effects
Copyright (c) 1992 Microsoft Corporation
Module Name:
ntddtime.h
Abstract:
This include file defines all constants and types for
accessing an NT wave device.
Author:
Robin Speed (RobinSp) 30-Jan-92
Revision History:
--*/
#define FILE_DEVICE_TIME 0x00000026
//
// Timer IOCTLs
//
#define IOCTL_TIMER_SET_TIMER_EVENT CTL_CODE(FILE_DEVICE_TIME, FILE_DEVICE_TIME + 0x0001, METHOD_BUFFERED, FILE_WRITE_DATA)
#define IOCTL_TIMER_GET_TIME CTL_CODE(FILE_DEVICE_TIME, FILE_DEVICE_TIME + 0x0002, METHOD_NEITHER, FILE_WRITE_DATA)
#define IOCTL_TIMER_GET_DEV_CAPS CTL_CODE(FILE_DEVICE_TIME, FILE_DEVICE_TIME + 0x0003, METHOD_BUFFERED, FILE_WRITE_DATA)
#define IOCTL_TIMER_BEGIN_MIN_PERIOD CTL_CODE(FILE_DEVICE_TIME, FILE_DEVICE_TIME + 0x0004, METHOD_NEITHER, FILE_WRITE_DATA)
#define IOCTL_TIMER_END_MIN_PERIOD CTL_CODE(FILE_DEVICE_TIME, FILE_DEVICE_TIME + 0x0005, METHOD_BUFFERED, FILE_WRITE_DATA)
#define IOCTL_TIMER_RESET CTL_CODE(FILE_DEVICE_TIME, FILE_DEVICE_TIME + 0x0006, METHOD_BUFFERED, FILE_WRITE_DATA)
#define IOCTL_TIMER_RESET_EVENT CTL_CODE(FILE_DEVICE_TIME, FILE_DEVICE_TIME + 0x0007, METHOD_NEITHER, FILE_WRITE_DATA)
#define DD_TIMER_DEVICE_NAME_U L"\\Device\\Timer"
#define IO_TIMER_INCREMENT 8
typedef struct {
ULONG EventTime; // Time in ms for event
ULONG EventId; // Id (cannot be 0)
LARGE_INTEGER EventTicks; // Driver use (not seen by caller)
} TIMER_DD_SET_EVENT, *PTIMER_DD_SET_EVENT;
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