[#BloombergLP-bdlmt-EventScheduler-cancelEvent-05]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bdlmt.adoc[bdlmt]::xref:BloombergLP/bdlmt/EventScheduler.adoc[EventScheduler]::cancelEvent
:relfileprefix: ../../../
:mrdocs:

Cancel the event having the specified `handle`&period; Return 0 on successful cancellation, and a non&hyphen;zero value if the `handle` is invalid _or_ if the event has already been dispatched or canceled&period; Note that due to the implicit conversion from Handle types, these methods also match the following&colon; &grave; int cancelEvent(const EventHandle&amp; handle)&semi; int cancelEvent(const RecurringEventHandle&amp; handle)&semi; &grave; Compared to the version taking a pointer to Handle, the managed reference to the event is not released until the Handle goes out of scope&period;

== Synopsis

Declared in `&lt;bdlmt&lowbar;eventscheduler&period;h&gt;`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
int
cancelEvent(xref:BloombergLP/bdlmt/EventScheduler/Event.adoc[Event] const* handle);
----


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