[#btck_WriteBytes]
= btck&lowbar;WriteBytes
:mrdocs:

Function signature for serializing data&period;

== Synopsis

Declared in `&lt;kernel&sol;bitcoinkernel&period;h&gt;`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
typedef int(* btck&lowbar;WriteBytes)(void const*, size&lowbar;t, void*);
----

== Description

Returns 0 to indicate success&period;


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