reactos/include/psdk/ntddbeep.h

   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
  23 #ifdef __cplusplus
  24 extern "C" {
  25 #endif
  26
  27 #define DD_BEEP_DEVICE_NAME    "\\Device\\Beep"
  28 #define DD_BEEP_DEVICE_NAME_U  L"\\Device\\Beep"
  29 #define BEEP_FREQUENCY_MINIMUM 0x25
  30 #define BEEP_FREQUENCY_MAXIMUM 0x7FFF
  31 #define IOCTL_BEEP_SET         CTL_CODE(FILE_DEVICE_BEEP, 0, METHOD_BUFFERED, FILE_ANY_ACCESS)
  32
  33 typedef struct _BEEP_SET_PARAMETERS
  34 {
  35    ULONG Frequency;
  36    ULONG Duration;
  37 } BEEP_SET_PARAMETERS, *PBEEP_SET_PARAMETERS;
  38
  39 #ifdef __cplusplus
  40 }
  41 #endif
  42 #endif
  43