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Diffstat (limited to '')
-rw-r--r-- | public/sdk/inc/ntddbeep.h | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/public/sdk/inc/ntddbeep.h b/public/sdk/inc/ntddbeep.h new file mode 100644 index 000000000..daaf98931 --- /dev/null +++ b/public/sdk/inc/ntddbeep.h @@ -0,0 +1,59 @@ +/*++ BUILD Version: 0001 // Increment this if a change has global effects + +Copyright (c) 1990-1993 Microsoft Corporation + +Module Name: + + ntddbeep.h + +Abstract: + + This is the include file that defines all constants and types for + the beep device. + +Author: + + Lee A. Smith (lees) 02-Aug-1991. + +Revision History: + +--*/ + +#ifndef _NTDDBEEP_ +#define _NTDDBEEP_ + +// +// Device Name - this string is the name of the device. It is the name +// that should be passed to NtOpenFile when accessing the device. +// +// Note: For devices that support multiple units, it should be suffixed +// with the Ascii representation of the unit number. +// + +#define DD_BEEP_DEVICE_NAME "\\Device\\Beep" +#define DD_BEEP_DEVICE_NAME_U L"\\Device\\Beep" + +// +// NtDeviceIoControlFile IoControlCode values for this device. +// +// Warning: Remember that the low two bits of the code specify how the +// buffers are passed to the driver! +// + +#define IOCTL_BEEP_SET CTL_CODE(FILE_DEVICE_BEEP, 0, METHOD_BUFFERED, FILE_ANY_ACCESS) + +// +// NtDeviceIoControlFile OutputBuffer record structures for +// IOCTL_BEEP_SET. +// + +typedef struct _BEEP_SET_PARAMETERS { + ULONG Frequency; + ULONG Duration; +} BEEP_SET_PARAMETERS, *PBEEP_SET_PARAMETERS; + +#define BEEP_FREQUENCY_MINIMUM 0x25 +#define BEEP_FREQUENCY_MAXIMUM 0x7FFF + +#endif // _NTDDBEEP_ + |