reactos/w32api/include/ddk/ntddbeep.h

   1 /*
   2  * ntddbeep.h
   3  *
   4  * Beep device IOCTL interface
   5  *
   6  * This file is part of the w32api package.
   7  *
   8  * Contributors:
   9  *   Created by Casper S. Hornstrup <chorns@users.sourceforge.net>
  10  *
  11  * THIS SOFTWARE IS NOT COPYRIGHTED
  12  *
  13  * This source code is offered for use in the public domain. You may
  14  * use, modify or distribute it freely.
  15  *
  16  * This code is distributed in the hope that it will be useful but
  17  * WITHOUT ANY WARRANTY. ALL WARRANTIES, EXPRESS OR IMPLIED ARE HEREBY
  18  * DISCLAIMED. This includes but is not limited to warranties of
  19  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  20  *
  21  */
  22
  23 #ifndef __NTDDBEEP_H
  24 #define __NTDDBEEP_H
  25
  26 #if __GNUC__ >=3
  27 #pragma GCC system_header
  28 #endif
  29
  30 #ifdef __cplusplus
  31 extern "C" {
  32 #endif
  33
  34 #define DD_BEEP_DEVICE_NAME               "\\Device\\Beep"
  35 #define DD_BEEP_DEVICE_NAME_U             L"\\Device\\Beep"
  36
  37 #define IOCTL_BEEP_SET \
  38   CTL_CODE(FILE_DEVICE_BEEP, 0, METHOD_BUFFERED, FILE_ANY_ACCESS)
  39
  40 typedef struct _BEEP_SET_PARAMETERS {
  41         ULONG  Frequency;
  42         ULONG  Duration;
  43 } BEEP_SET_PARAMETERS, *PBEEP_SET_PARAMETERS;
  44
  45 #define BEEP_FREQUENCY_MINIMUM            0x25
  46 #define BEEP_FREQUENCY_MAXIMUM            0x7FFF
  47
  48 #ifdef __cplusplus
  49 }
  50 #endif
  51
  52 #endif /* __NTDDBEEP_H */