[#OSSL_ENCODER_names_do_all]
= OSSL_ENCODER_names_do_all
:mrdocs:

Invoke a callback for every name/synonym associated with an encoder.

== Synopsis

Declared in `<openssl/encoder.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
int
OSSL_ENCODER_names_do_all(
    xref:OSSL_ENCODER.adoc[OSSL_ENCODER] const* encoder,
    void(* fn)(char const*, void*),
    void* data);
----

== Return Value

1 if the callback was invoked for all names, or 0 if none were called.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *encoder*
| Encoder whose names are enumerated.
| *fn*
| Callback receiving each name and `data.`
| *data*
| Opaque argument passed to `fn.`
|===


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