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44 lines
1 KiB
C
44 lines
1 KiB
C
/*
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* ntddbeep.h
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*
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* Contributors:
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* Created by Casper S. Hornstrup <chorns@users.sourceforge.net>
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*
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* THIS SOFTWARE IS NOT COPYRIGHTED
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*
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* This source code is offered for use in the public domain. You may
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* use, modify or distribute it freely.
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*
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* This code is distributed in the hope that it will be useful but
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* WITHOUT ANY WARRANTY. ALL WARRANTIES, EXPRESS OR IMPLIED ARE HEREBY
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* DISCLAIMED. This includes but is not limited to warranties of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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*
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*/
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#ifndef _NTDDBEEP_
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#define _NTDDBEEP_
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#ifdef __cplusplus
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extern "C" {
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#endif
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#define DD_BEEP_DEVICE_NAME "\\Device\\Beep"
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#define DD_BEEP_DEVICE_NAME_U L"\\Device\\Beep"
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#define BEEP_FREQUENCY_MINIMUM 0x25
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#define BEEP_FREQUENCY_MAXIMUM 0x7FFF
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#define IOCTL_BEEP_SET CTL_CODE(FILE_DEVICE_BEEP, 0, METHOD_BUFFERED, FILE_ANY_ACCESS)
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typedef struct _BEEP_SET_PARAMETERS
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{
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ULONG Frequency;
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ULONG Duration;
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} BEEP_SET_PARAMETERS, *PBEEP_SET_PARAMETERS;
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#ifdef __cplusplus
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}
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#endif
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#endif
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