[#BloombergLP-balb-ControlManager-deregisterHandler]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/balb.adoc[balb]::xref:BloombergLP/balb/ControlManager.adoc[ControlManager]::deregisterHandler
:relfileprefix: ../../../
:mrdocs:

Deregister the callback function previously registered to handle the specified `prefix`. Return 0 on success or a non‐zero value otherwise.

== Synopsis

Declared in `<balb_controlmanager.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
int
deregisterHandler(std::string_view const& prefix);
----


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