ResetEvent

The ResetEvent function sets the specified event object to the nonsignaled state.

BOOL ResetEvent(
  HANDLE hEvent   // handle to event
);

Parameters

hEvent

[in] Handle to the event object. The CreateEvent or OpenEvent function returns this handle.

Windows NT/2000: The handle must have EVENT_MODIFY_STATE access. For more information, see Synchronization Object Security and Access Rights.

Return Values

If the function succeeds, the return value is nonzero.

If the function fails, the return value is zero. To get extended error information, call GetLastError.

Remarks

The state of an event object remains nonsignaled until it is explicitly set to signaled by the SetEvent or PulseEvent function. This nonsignaled state blocks the execution of any threads that have specified the event object in a call to one of the wait functions.

The ResetEvent function is used primarily for manual-reset event objects, which must be set explicitly to the nonsignaled state. Auto-reset event objects automatically change from signaled to nonsignaled after a single waiting thread is released.

Requirements

  Windows NT/2000: Requires Windows NT 3.1 or later.
  Windows 95/98: Requires Windows 95 or later.
  Header: Declared in Winbase.h; include Windows.h.
  Library: Use Kernel32.lib.

See Also

Synchronization Overview, Synchronization Functions, CreateEvent, OpenEvent, PulseEvent, SetEvent