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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 | <html><head><meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"><title>Chapter 3. Moving On</title><meta name="generator" content="DocBook XSL Stylesheets V1.65.1"><link rel="home" href="index.html" title="PyGTK 2.0 Tutorial"><link rel="up" href="index.html" title="PyGTK 2.0 Tutorial"><link rel="previous" href="sec-SteppingThroughHelloWorld.html" title="2.4. Stepping Through Hello World"><link rel="next" href="sec-UpgradedHelloWorld.html" title="3.2. An Upgraded Hello World"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Chapter 3. Moving On</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="sec-SteppingThroughHelloWorld.html">Prev</a> </td><th width="60%" align="center"> </th><td width="20%" align="right"> <a accesskey="n" href="sec-UpgradedHelloWorld.html">Next</a></td></tr></table><hr></div><div class="chapter" lang="en"><div class="titlepage"><div><div><h2 class="title"><a name="ch-MovingOn"></a>Chapter 3. Moving On</h2></div></div><div></div></div><div class="toc"><p><b>Table of Contents</b></p><dl><dt><span class="sect1"><a href="ch-MovingOn.html#sec-MoreOnSignalHandlers">3.1. More on Signal Handlers</a></span></dt><dt><span class="sect1"><a href="sec-UpgradedHelloWorld.html">3.2. An Upgraded Hello World</a></span></dt></dl></div><div class="sect1" lang="en"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="sec-MoreOnSignalHandlers"></a>3.1. More on Signal Handlers</h2></div></div><div></div></div><p>Lets take another look at the connect() call.</p><table border="0" bgcolor="#E0E0E0" width="100%"><tr><td><pre class="programlisting">
object.connect(name, func, func_data)
</pre></td></tr></table><p>The return value from a <tt class="methodname">connect</tt>() call is
an integer tag that identifies your callback. As stated above, you may have
as many callbacks per signal and per object as you need, and each will be
executed in turn, in the order they were attached.</p><p>This tag allows you to remove this callback from the list by using:</p><table border="0" bgcolor="#E0E0E0" width="100%"><tr><td><pre class="programlisting">
object.disconnect(id)
</pre></td></tr></table><p>So, by passing in the tag returned by one of the signal connect
methods, you can disconnect a signal handler.</p><p>You can also temporarily disable signal handlers with the
<tt class="methodname">signal_handler_block</tt>() and
<tt class="methodname">signal_handler_unblock</tt>() pair of methods.</p><table border="0" bgcolor="#E0E0E0" width="100%"><tr><td><pre class="programlisting">
object.signal_handler_block(handler_id)
object.signal_handler_unblock(handler_id)
</pre></td></tr></table></div></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="sec-SteppingThroughHelloWorld.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="index.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="sec-UpgradedHelloWorld.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">2.4. Stepping Through Hello World </td><td width="20%" align="center"><a accesskey="h" href="index.html">Home</a></td><td width="40%" align="right" valign="top"> 3.2. An Upgraded Hello World</td></tr></table></div></body></html>
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