nt/issues/new?title=docs:plugin%3A%3A%5Bon_alert%28%29%5D&labels=documentation&body=Documentation+under+heading+%22plugin%3A%3A%5Bon_alert%28%29%5D%22+could+be+improved">report issue</a>]</span></div>
<div class="section" id="on-alert">
<h2>on_alert()</h2>
<pre class="literal-block">
virtual void <strong>on_alert</strong> (alert const*);
</pre>
<p>called when an <a class="reference external" href="reference-Alerts.html#alert">alert</a> is posted alerts that are filtered are not posted.
If your <a class="ref