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<title>ZIP_REGISTER_PROGRESS_CALLBACK_WITH_STATE(3)</title>
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<table class="head">
<tr>
<td class="head-ltitle">ZIP_REGISTER_PROGRESS_CALLBACK_WITH_STATE(3)</td>
<td class="head-vol">Library Functions Manual</td>
<td class="head-rtitle">ZIP_REGISTER_PROGRESS_CALLBACK_WITH_STATE(3)</td>
</tr>
</table>
<div class="manual-text">
<section class="Sh">
<h1 class="Sh" id="NAME"><a class="permalink" href="#NAME">NAME</a></h1>
<code class="Nm">zip_register_progress_callback_with_state</code> &#x2014;
<div class="Nd">provide updates during zip_close</div>
</section>
<section class="Sh">
<h1 class="Sh" id="LIBRARY"><a class="permalink" href="#LIBRARY">LIBRARY</a></h1>
libzip (-lzip)
</section>
<section class="Sh">
<h1 class="Sh" id="SYNOPSIS"><a class="permalink" href="#SYNOPSIS">SYNOPSIS</a></h1>
<code class="In">#include &lt;<a class="In">zip.h</a>&gt;</code>
<p class="Pp"><var class="Vt">typedef void (*zip_progress_callback)(zip_t *,
double, void *);</var></p>
<p class="Pp"><var class="Ft">void</var>
<br/>
<code class="Fn">zip_register_progress_callback_with_state</code>(<var class="Fa" style="white-space: nowrap;">zip_t
*archive</var>, <var class="Fa" style="white-space: nowrap;">double
precision</var>,
<var class="Fa" style="white-space: nowrap;">zip_progress_callback
callback</var>, <var class="Fa" style="white-space: nowrap;">void
(*ud_free)(void *)</var>, <var class="Fa" style="white-space: nowrap;">void
*ud</var>);</p>
</section>
<section class="Sh">
<h1 class="Sh" id="DESCRIPTION"><a class="permalink" href="#DESCRIPTION">DESCRIPTION</a></h1>
The <code class="Fn">zip_register_progress_callback_with_state</code>() function
registers a callback function <var class="Ar">callback</var> for the zip
archive <var class="Ar">archive</var>. The <var class="Ar">precision</var>
argument is a double in the range from 0.00 to 1.0 that defines the smallest
change for which the callback should be called (to avoid too frequent calls).
The <var class="Ar">ud_free</var> function is called during cleanup for
deleting the userdata supplied in <var class="Ar">ud</var>.
<p class="Pp">The callback function is called during
<a class="Xr" href="zip_close.html">zip_close(3)</a> in regular intervals
(after every zip archive entry that's completely written to disk, and while
writing data for entries) with zip archive <var class="Ar">archive</var>,
the current progression state as a <var class="Vt">double</var>, and the
user-provided user-data <var class="Ar">ud</var> as arguments. The
progression state is a <var class="Vt">double</var> in the range from 0.0 to
1.0. This can be used to provide progress indicators for user
interfaces.</p>
</section>
<section class="Sh">
<h1 class="Sh" id="SEE_ALSO"><a class="permalink" href="#SEE_ALSO">SEE
ALSO</a></h1>
<a class="Xr" href="libzip.html">libzip(3)</a>,
<a class="Xr" href="zip_close.html">zip_close(3)</a>,
<a class="Xr" href="zip_register_cancel_callback_with_state.html">zip_register_cancel_callback_with_state(3)</a>
</section>
<section class="Sh">
<h1 class="Sh" id="HISTORY"><a class="permalink" href="#HISTORY">HISTORY</a></h1>
<code class="Fn">zip_register_progress_callback_with_state</code>() was added in
libzip 1.3.0.
</section>
<section class="Sh">
<h1 class="Sh" id="AUTHORS"><a class="permalink" href="#AUTHORS">AUTHORS</a></h1>
<span class="An">Dieter Baron</span>
&lt;<a class="Mt" href="mailto:dillo@nih.at">dillo@nih.at</a>&gt; and
<span class="An">Thomas Klausner</span>
&lt;<a class="Mt" href="mailto:tk@giga.or.at">tk@giga.or.at</a>&gt;
</section>
</div>
<table class="foot">
<tr>
<td class="foot-date">December 18, 2017</td>
<td class="foot-os">NiH</td>
</tr>
</table>
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