[#BloombergLP-bdlmt-TimerEventScheduler-cancelEvent-03]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bdlmt.adoc[bdlmt]::xref:BloombergLP/bdlmt/TimerEventScheduler.adoc[TimerEventScheduler]::cancelEvent
:relfileprefix: ../../../
:mrdocs:

Cancel the event having the specified `handle`. Optionally use the specified `key` to uniquely identify the event. If the optionally specified `wait` is true, then ensure that the dispatcher thread has resumed execution before returning. Return 0 on successful cancellation, and a non‐zero value if the `handle` is invalid _or_ if it is too late to cancel the event. If this method is being invoked from the dispatcher thread then the `wait` is ignored to avoid deadlock.

== Synopsis

Declared in `<bdlmt_timereventscheduler.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
int
cancelEvent(
    xref:BloombergLP/bdlmt/TimerEventScheduler/Handle.adoc[Handle] handle,
    bool wait = false);
----


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