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