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https://github.com/reactos/reactos.git
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100 lines
2.8 KiB
C
100 lines
2.8 KiB
C
/* $Id$
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*
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* COPYRIGHT: See COPYING in the top level directory
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* PROJECT: ReactOS system libraries
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* FILE: dll/win32/kernel32/misc/error.c
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* PURPOSE: Environment functions
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* PROGRAMMER: Emanuele Aliberti
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* Thomas Weidenmueller
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* UPDATE HISTORY:
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* Created 05/10/98
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*/
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#include <k32.h>
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#define NDEBUG
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#include <debug.h>
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/*
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* @implemented
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*/
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BOOL
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WINAPI
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Beep (DWORD dwFreq, DWORD dwDuration)
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{
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HANDLE hBeep;
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UNICODE_STRING BeepDevice;
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OBJECT_ATTRIBUTES ObjectAttributes;
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IO_STATUS_BLOCK IoStatusBlock;
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BEEP_SET_PARAMETERS BeepSetParameters;
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NTSTATUS Status;
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/* check the parameters */
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if ((dwFreq >= 0x25 && dwFreq <= 0x7FFF) ||
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(dwFreq == 0x0 && dwDuration == 0x0))
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{
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/* open the device */
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RtlInitUnicodeString(&BeepDevice,
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L"\\Device\\Beep");
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InitializeObjectAttributes(&ObjectAttributes,
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&BeepDevice,
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0,
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NULL,
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NULL);
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Status = NtCreateFile(&hBeep,
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FILE_READ_DATA | FILE_WRITE_DATA,
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&ObjectAttributes,
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&IoStatusBlock,
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NULL,
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0,
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FILE_SHARE_READ | FILE_SHARE_WRITE,
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FILE_OPEN_IF,
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0,
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NULL,
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0);
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if (NT_SUCCESS(Status))
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{
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/* Set beep data */
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BeepSetParameters.Frequency = dwFreq;
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BeepSetParameters.Duration = dwDuration;
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Status = NtDeviceIoControlFile(hBeep,
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NULL,
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NULL,
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NULL,
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&IoStatusBlock,
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IOCTL_BEEP_SET,
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&BeepSetParameters,
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sizeof(BEEP_SET_PARAMETERS),
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NULL,
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0);
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/* do an alertable wait if necessary */
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if (NT_SUCCESS(Status) &&
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(dwFreq != 0x0 || dwDuration != 0x0) && dwDuration != MAXDWORD)
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{
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SleepEx(dwDuration,
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TRUE);
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}
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NtClose(hBeep);
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}
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}
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else
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Status = STATUS_INVALID_PARAMETER;
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if (!NT_SUCCESS(Status))
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{
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SetLastErrorByStatus (Status);
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return FALSE;
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}
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return TRUE;
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}
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/* EOF */
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