NtOpenEvent - 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
NtOpenEvent(
    _Out_ PHANDLE EventHandle,
    _In_ ACCESS_MASK DesiredAccess,
    _In_ POBJECT_ATTRIBUTES ObjectAttributes
    );

#endif
#endif

View code on GitHub
#ifndef _NTZWAPI_H

NTSYSCALLAPI
NTSTATUS
NTAPI
ZwOpenEvent(
    _Out_ PHANDLE EventHandle,
    _In_ ACCESS_MASK DesiredAccess,
    _In_ POBJECT_ATTRIBUTES ObjectAttributes
    );

#endif

View code on GitHub

This function is documented in Windows Driver Kit.

EventHandle

Result of call - HANDLE to Event Object.

DesiredAccess

See NtCreateEvent for possible access rights.

ObjectAttributes

Must contain valid Event Object name, in NT Objects Namespace.

Only named events can be opened by this function call.

Documented by

See also

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