[#CRYPTO_EX_new]
= CRYPTO_EX_new
:mrdocs:

Callback invoked when a new ex_data slot is first associated with an object.

== Synopsis

Declared in `<openssl/crypto.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
typedef void CRYPTO_EX_new(void*, void*, xref:CRYPTO_EX_DATA.adoc[CRYPTO_EX_DATA]*, int, long, void*);
----

== Parameters

[cols="1,4"]
|===
| Name| Description
| *parent*
| Object that owns the CRYPTO_EX_DATA.
| *ptr*
| Pointer value being stored (often NULL on allocation).
| *ad*
| Ex‐data bag for `parent.`
| *idx*
| Ex‐data index being initialized.
| *argl*
| Long argument registered with CRYPTO_get_ex_new_index().
| *argp*
| Pointer argument registered with CRYPTO_get_ex_new_index().
|===


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