70 lines
1.4 KiB
C
70 lines
1.4 KiB
C
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/***
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*slbeep.c - Sleep and beep
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*
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* Copyright (c) 1991-2001, Microsoft Corporation. All rights reserved.
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*
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*Purpose:
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* defines _sleep() and _beep()
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*
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*Revision History:
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* 08-22-91 BWM Wrote module.
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* 09-29-93 GJF Resurrected for compatibility with NT SDK (which had
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* the function). Replaced _CALLTYPE1 with __cdecl and
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* removed Cruiser support.
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*
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*******************************************************************************/
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#include <cruntime.h>
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#include <oscalls.h>
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#include <stdlib.h>
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/***
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*void _sleep(duration) - Length of sleep
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*
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*Purpose:
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*
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*Entry:
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* unsigned long duration - length of sleep in milliseconds or
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* one of the following special values:
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*
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* _SLEEP_MINIMUM - Sends a yield message without any delay
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* _SLEEP_FOREVER - Never return
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*
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*Exit:
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* None
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*
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*Exceptions:
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*
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*******************************************************************************/
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void __cdecl _sleep(unsigned long dwDuration)
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{
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if (dwDuration == 0) {
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dwDuration++;
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}
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Sleep(dwDuration);
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}
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/***
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*void _beep(frequency, duration) - Length of sleep
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*
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*Purpose:
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*
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*Entry:
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* unsigned frequency - frequency in hertz
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* unsigned duration - length of beep in milliseconds
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*
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*Exit:
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* None
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*
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*Exceptions:
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*
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*******************************************************************************/
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void __cdecl _beep(unsigned dwFrequency, unsigned dwDuration)
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{
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Beep(dwFrequency, dwDuration);
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}
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