v4k-git-backup/tools/tcc-winapi/ddk/ntddbeep.h

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#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