[#BloombergLP-ball-CategoryManager-lookupCategory-0f]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/ball.adoc[ball]::xref:BloombergLP/ball/CategoryManager.adoc[CategoryManager]::lookupCategory
:relfileprefix: ../../../
:mrdocs:

Return the address of the modifiable category having the specified `categoryName` in the registry of this category manager, or 0 if no such category exists. If a category is returned and the specified `categoryHolder` is non‐null, then also load into `categoryHolder` the returned category and its maximum level and link `categoryHolder` to the category if it has not yet been linked. Note that the category name is possibly changed by the registered category name filter callback before the lookup.

== Synopsis

Declared in `<ball_categorymanager.h>`

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


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