[#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‐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. == Synopsis Declared in `<ball_categorymanager.h>` [source,cpp,subs="verbatim,replacements,macros,-callouts"] ---- xref:BloombergLP/ball/Category.adoc[Category] const* lookupCategory(char const* categoryName) const; ---- [.small]#Created with https://www.mrdocs.com[MrDocs]#