1/*
2 * ntddbeep.h
3 *
4 * Contributors:
5 *   Created by Casper S. Hornstrup <chorns@users.sourceforge.net>
6 *
7 * THIS SOFTWARE IS NOT COPYRIGHTED
8 *
9 * This source code is offered for use in the public domain. You may
10 * use, modify or distribute it freely.
11 *
12 * This code is distributed in the hope that it will be useful but
13 * WITHOUT ANY WARRANTY. ALL WARRANTIES, EXPRESS OR IMPLIED ARE HEREBY
14 * DISCLAIMED. This includes but is not limited to warranties of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
16 *
17 */
18
19#ifndef _NTDDBEEP_
20#define _NTDDBEEP_
21
22#ifdef __cplusplus
23extern "C" {
24#endif
25
26#define DD_BEEP_DEVICE_NAME    "\\Device\\Beep"
27#define DD_BEEP_DEVICE_NAME_U  L"\\Device\\Beep"
28#define BEEP_FREQUENCY_MINIMUM 0x25
29#define BEEP_FREQUENCY_MAXIMUM 0x7FFF
30#define IOCTL_BEEP_SET         CTL_CODE(FILE_DEVICE_BEEP, 0, METHOD_BUFFERED, FILE_ANY_ACCESS)
31
32typedef struct _BEEP_SET_PARAMETERS
33{
34  ULONG Frequency;
35  ULONG Duration;
36} BEEP_SET_PARAMETERS, *PBEEP_SET_PARAMETERS;
37
38#ifdef __cplusplus
39}
40#endif
41
42#endif /* _NTDDBEEP_ */
43
44