[#BloombergLP-balm-Category-registerCategoryHolder]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/balm.adoc[balm]::xref:BloombergLP/balm/Category.adoc[Category]::registerCategoryHolder
:relfileprefix: ../../../
:mrdocs:

Load into the specified `holder` the address of this category, its `enabled()` status, and the address of the next holder in the linked list of category holders maintained by this object (prepending `holder` to this category's linked list of category holders). This category will update `holder‐>enabled()` when its enabled state changes, and will reset `holder` (i.e., `holder‐>reset()`) when this category is destroyed. The behavior is undefined unless `holder` remains valid and _unmodified_ (by the client) for the lifetime of this object and is _not_ registered again with any category (including this one).

== Synopsis

Declared in `<balm_category.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
void
registerCategoryHolder(xref:BloombergLP/balm/CategoryHolder.adoc[CategoryHolder]* holder);
----


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