[#btck_NotifyProgress]
= btck&lowbar;NotifyProgress
:mrdocs:

Callback reporting validation or sync progress as a percentage&period;

== Synopsis

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

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