<?xml version="1.0" encoding="iso-8859-1"?> <?xml-stylesheet type="text/css" href="../../styles.css" ?> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" lang="en" xml:lang="en"> <head> <meta http-equiv="content-type" content="text/html; charset=iso-8859-1" /> <title>Logtalk built-in predicate: current_event/5</title> <link rel="stylesheet" href="../../styles.css" type="text/css" /> </head> <body> <div class="navtop"> <a href="../../index.html">contents</a> > <a href="../index.html">reference manual</a> > <a href="../index.html#builtins">built-in predicates</a> </div> <h2><code>current_event/5</code></h2> <h4>Description</h4> <blockquote> <pre>current_event(Event, Object, Message, Sender, Monitor)</pre> <p> Enumerates, by backtracking, all defined events. The two types of events are represented by the atoms <code>before</code> and <code>after</code>. </p> </blockquote> <h4>Template and modes</h4> <blockquote> <pre>current_event(?event, ?object_identifier, ?callable, ?object_identifier, ?object_identifier)</pre> </blockquote> <h4>Errors</h4> <blockquote> <dl> <dt>Event is neither a variable nor a valid event identifier:</dt> <dd><code>type_error(event, Event)</code></dd> <dt>Object is neither a variable nor a valid object identifier:</dt> <dd><code>type_error(object_identifier, Object)</code></dd> <dt>Message is neither a variable nor a callable term:</dt> <dd><code>type_error(callable, Message)</code></dd> <dt>Sender is neither a variable nor a valid object identifier:</dt> <dd><code>type_error(object_identifier, Sender)</code></dd> <dt>Monitor is neither a variable nor a valid object identifier:</dt> <dd><code>type_error(object_identifier, Monitor)</code></dd> </dl> </blockquote> <h4>Examples</h4> <blockquote> <pre>| ?- current_event(Event, Object, Message, Sender, debugger).</pre> </blockquote> <div class="navbottom"> <a href="abolish_events5.html">previous</a> | <a href="../../glossary.html">glossary</a> | <a href="define_events5.html">next</a> </div> <div class="copyright"> Copyright © <a href="mailto:pmoura@logtalk.org">Paulo Moura</a> — <a href="http://www.logtalk.org">Logtalk.org</a> </div> <div class="footer"> <p><span class="bleft"><a href="http://validator.w3.org/check/referer">XHTML</a> + <a href="http://jigsaw.w3.org/css-validator/check/referer">CSS</a></span><span class="bright">Last updated on: August 5, 2005</span></p> </div> </body> </html>