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

Add to this category registry a new category having the specified `categoryName`, possibly changed by the registered category name filter callback, and having `recordLevel`, `passLevel`, `triggerLevel`, and `triggerAllLevel` threshold levels, respectively, if (1) (the possibly filtered) `categoryName` is not present in the registry, (2) the number of categories in the registry is less than the registry capacity, and (3) `recordLevel`, `passLevel`, `triggerLevel`, and `triggerAllLevel` are all within the range `[0 .. 255]`. If (the possibly filtered) `categoryName` is already present and each threshold level is within the valid range then reset the threshold levels of (the possibly filtered) `categoryName` to the specified values. Return the address of the (possibly newly‐created) modifiable category having (the possibly filtered) `categoryName` if that `categoryName` was either created or its thresholds reset, and 0 otherwise. The behavior is undefined unless `categoryName` is null‐terminated. Note that 0, and _not_ the _Default_ _Category_, is returned on failure.

== Synopsis

Declared in `<ball_categorymanager.h>`

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


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