5 * Created by Casper S. Hornstrup <chorns@users.sourceforge.net>
7 * THIS SOFTWARE IS NOT COPYRIGHTED
9 * This source code is offered for use in the public domain. You may
10 * use, modify or distribute it freely.
12 * This code is distributed in the hope that it will be useful but
13 * WITHOUT ANY WARRANTY. ALL WARRANTIES, EXPRESS OR IMPLIED ARE HEREBY
14 * DISCLAIMED. This includes but is not limited to warranties of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
27 #define DD_BEEP_DEVICE_NAME "\\Device\\Beep"
28 #define DD_BEEP_DEVICE_NAME_U L"\\Device\\Beep"
29 #define BEEP_FREQUENCY_MINIMUM 0x25
30 #define BEEP_FREQUENCY_MAXIMUM 0x7FFF
31 #define IOCTL_BEEP_SET CTL_CODE(FILE_DEVICE_BEEP, 0, METHOD_BUFFERED, FILE_ANY_ACCESS)
33 typedef struct _BEEP_SET_PARAMETERS
37 } BEEP_SET_PARAMETERS
, *PBEEP_SET_PARAMETERS
;