/* * ntddbeep.h * * Beep device IOCTL interface * * This file is part of the MinGW package. * * Contributors: * Created by Casper S. Hornstrup * * 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 * DISCLAMED. This includes but is not limited to warranties of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. * */ #ifndef __NTDDBEEP_H #define __NTDDBEEP_H #if __GNUC__ >=3 #pragma GCC system_header #endif #ifdef __cplusplus extern "C" { #endif #define IOCTL_BEEP_SET \ CTL_CODE(FILE_DEVICE_BEEP,0,METHOD_BUFFERED,FILE_ANY_ACCESS) typedef struct tagBEEP_SET_PARAMETERS { ULONG Frequency; ULONG Duration; } BEEP_SET_PARAMETERS, *PBEEP_SET_PARAMETERS; #define BEEP_FREQUENCY_MINIMUM 0x25 #define BEEP_FREQUENCY_MAXIMUM 0x7FFF #ifdef __cplusplus } #endif #endif /* __NTDDBEEP_H */