reactos/include/ddk/ntddbeep.h

   1 /*
   2  * ntddbeep.h
   3  *
   4  * Beep device IOCTL interface
   5  *
   6  * This file is part of the MinGW 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  * DISCLAMED. 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
  35 #define IOCTL_BEEP_SET \
  36   CTL_CODE(FILE_DEVICE_BEEP,0,METHOD_BUFFERED,FILE_ANY_ACCESS)
  37
  38 typedef struct tagBEEP_SET_PARAMETERS {
  39     ULONG Frequency;
  40     ULONG Duration;
  41 } BEEP_SET_PARAMETERS, *PBEEP_SET_PARAMETERS;
  42
  43 #define BEEP_FREQUENCY_MINIMUM  0x25
  44 #define BEEP_FREQUENCY_MAXIMUM  0x7FFF
  45
  46 #ifdef __cplusplus
  47 }
  48 #endif
  49
  50 #endif /* __NTDDBEEP_H */