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39 lines
510 B
39 lines
510 B
/*++
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Copyright (c) 1989 Microsoft Corporation
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Module Name:
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beep.h
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Abstract:
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These are the structures and defines that are used in the beep driver.
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Author:
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Lee A. Smith (lees) 02-Aug-1991.
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Revision History:
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--*/
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#ifndef _BEEP_
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#define _BEEP_
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#include <ntddbeep.h>
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//
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// Define the device extension.
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//
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typedef struct _DEVICE_EXTENSION {
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KTIMER Timer;
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FAST_MUTEX Mutex;
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ULONG ReferenceCount;
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BOOLEAN TimerSet;
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} DEVICE_EXTENSION, *PDEVICE_EXTENSION;
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#endif // _BEEP_
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