NtResetEvent - NtDoc

Native API online documentation, based on the System Informer (formerly Process Hacker) phnt headers
#ifndef _NTEXAPI_H
#if (PHNT_MODE != PHNT_MODE_KERNEL)

NTSYSCALLAPI
NTSTATUS
NTAPI
NtResetEvent(
    _In_ HANDLE EventHandle,
    _Out_opt_ PLONG PreviousState
    );

#endif
#endif

View code on GitHub
#ifndef _NTZWAPI_H

NTSYSCALLAPI
NTSTATUS
NTAPI
ZwResetEvent(
    _In_ HANDLE EventHandle,
    _Out_opt_ PLONG PreviousState
    );

#endif

View code on GitHub

EventHandle

HANDLE to Event Object opened with EVENT_MODIFY_STATE access.

PreviousState

Optional pointer to state of event before function call.

Difference between NtResetEvent and NtClearEvent is the first one can return state of event before call.

Documented by

See also