#ifndef _PHNT_NTDEF_H
#ifndef _NTDEF_

// Synchronization enumerations

typedef enum _EVENT_TYPE
{
    NotificationEvent,
    SynchronizationEvent
} EVENT_TYPE;

#endif
#endif
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There are two Event types in WinNT:

NotificationEvent

Known also as manual-reset event. Caller decide about state of event. You can use NtClearEvent or NtResetEvent to put Event Object into non-signaled state.

SynchronizationEvent

Known as auto-reset event. This type automatically change his state to non-signaled after releasing any (but only one) waiting thread.

To check what type of event do you have, use NtQueryEvent.

Documented by

Tomasz Nowak

EVENT_TYPE - NtDoc

NotificationEvent

SynchronizationEvent

Documented by

See also