[#BloombergLP-ball-CategoryManager-lookupCategory-07]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/ball.adoc[ball]::xref:BloombergLP/ball/CategoryManager.adoc[CategoryManager]::lookupCategory
:relfileprefix: ../../../
:mrdocs:

Return the address of the non&hyphen;modifiable category having the specified `categoryName`, possibly changed by the registered category name filter callback, in the registry of this category manager, or 0 if no such category exists&period;

== Synopsis

Declared in `&lt;ball&lowbar;categorymanager&period;h&gt;`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
xref:BloombergLP/ball/Category.adoc[Category] const*
lookupCategory(char const* categoryName) const;
----


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