[#BloombergLP-ball-CategoryCallbacks]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/ball.adoc[ball]::CategoryCallbacks
:relfileprefix: ../../
:mrdocs:

This struct provides a namespace for default threshold level related callback function types.

== Synopsis

Declared in `<ball_categorycallbacks.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
struct CategoryCallbacks;
----

== Type Aliases

[cols="1,4"]
|===
| Name| Description
| xref:BloombergLP/ball/CategoryCallbacks/DefaultThresholdLevels.adoc[`DefaultThresholdLevels`] 
| An alias to a function meeting the following contract: ` /// Load into the specified `recordLevel`, `passLevel`, `triggerLevel`, /// and `triggerAllLevel` the default hierarchical threshold level /// settings for the specified `categoryName`. void defaultThresholdLevels(int *recordLevel, int *passLevel, int *triggerLevel, int *triggerAllLevel, const char *categoryName); `
| xref:BloombergLP/ball/CategoryCallbacks/NameFilter.adoc[`NameFilter`] 
| An alias to a function meeting the following contract: ` /// Load into the specified `buffer` the internal name to be used as /// the key in the `CategoryManager` registry for the specified /// external `categoryName`, or leave `buffer` unmodified to use /// `categoryName` as‐is. void nameFilter(bsl::string *buffer, const char *categoryName); ` See also `CategoryManager`.
|===



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