[#OSSL_DECODER_CTX_set_construct]
= OSSL_DECODER_CTX_set_construct
:mrdocs:

Register a callback invoked when a decoded object is constructed.

== Synopsis

Declared in `<openssl/decoder.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
int
OSSL_DECODER_CTX_set_construct(
    xref:OSSL_DECODER_CTX.adoc[OSSL_DECODER_CTX]* ctx,
    xref:OSSL_DECODER_CONSTRUCT.adoc[OSSL_DECODER_CONSTRUCT]* construct);
----

== Return Value

1 on success, or 0 on error.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *ctx*
| Decoder context to configure.
| *construct*
| Callback receiving params for each constructed object, or NULL to clear.
|===


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