<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <html> <head> <link rel="STYLESHEET" href="mac.css" type='text/css' /> <link rel="SHORTCUT ICON" href="../icons/pyfav.gif" /> <link rel='start' href='../index.html' title='Python Documentation Index' /> <link rel="first" href="mac.html" title='Macintosh Library Modules' /> <link rel='contents' href='contents.html' title="Contents" /> <link rel='index' href='genindex.html' title='Index' /> <link rel='last' href='about.html' title='About this document...' /> <link rel='help' href='about.html' title='About this document...' /> <LINK rel="prev" href="module-MiniAEFrame.html"> <LINK rel="parent" href="module-MiniAEFrame.html"> <LINK rel="next" href="toolbox.html"> <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" /> <meta name='aesop' content='information' /> <META name="description" content="AEServer Objects "> <META name="keywords" content="mac"> <META name="resource-type" content="document"> <META name="distribution" content="global"> <title>3.5.1 AEServer Objects </title> </head> <body> <DIV CLASS="navigation"> <div id='top-navigation-panel'> <table align="center" width="100%" cellpadding="0" cellspacing="2"> <tr> <td class='online-navigation'><a rel="prev" title="3.5 MiniAEFrame " href="module-MiniAEFrame.html"><img src='../icons/previous.png' border='0' height='32' alt='Previous Page' width='32' /></A></td> <td class='online-navigation'><a rel="parent" title="3.5 MiniAEFrame " href="module-MiniAEFrame.html"><img src='../icons/up.png' border='0' height='32' alt='Up One Level' width='32' /></A></td> <td class='online-navigation'><a rel="next" title="4. 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MacOS Toolbox Modules</A> </div> <hr /></div> </DIV> <!--End of Navigation Panel--> <H2><A NAME="SECTION005510000000000000000"><!--x--></A><A NAME="aeserver-objects"><!--z--></A> <BR> 3.5.1 AEServer Objects </H2> <P> <dl><dt><table cellpadding="0" cellspacing="0"><tr valign="baseline"> <td><nobr><b><tt id='l2h-186' class="method">installaehandler</tt></b>(</nobr></td> <td><var>classe, type, callback</var>)</td></tr></table></dt> <dd> Installs an AppleEvent handler. <var>classe</var> and <var>type</var> are the four-character OSA Class and Type designators, <code>'****'</code> wildcards are allowed. When a matching AppleEvent is received the parameters are decoded and your callback is invoked. </dl> <P> <dl><dt><table cellpadding="0" cellspacing="0"><tr valign="baseline"> <td><nobr><b><tt id='l2h-187' class="method">callback</tt></b>(</nobr></td> <td><var>_object, **kwargs</var>)</td></tr></table></dt> <dd> Your callback is called with the OSA Direct Object as first positional parameter. The other parameters are passed as keyword arguments, with the 4-character designator as name. Three extra keyword parameters are passed: <code>_class</code> and <code>_type</code> are the Class and Type designators and <code>_attributes</code> is a dictionary with the AppleEvent attributes. <P> The return value of your method is packed with <tt class="function">aetools.packevent()</tt> and sent as reply. </dl> <P> Note that there are some serious problems with the current design. AppleEvents which have non-identifier 4-character designators for arguments are not implementable, and it is not possible to return an error to the originator. This will be addressed in a future release. <P> <DIV CLASS="navigation"> <div class='online-navigation'><hr /> <table align="center" width="100%" cellpadding="0" cellspacing="2"> <tr> <td class='online-navigation'><a rel="prev" title="3.5 MiniAEFrame " rel="prev" title="3.5 MiniAEFrame " href="module-MiniAEFrame.html"><img src='../icons/previous.png' border='0' height='32' alt='Previous Page' width='32' /></A></td> <td class='online-navigation'><a rel="parent" title="3.5 MiniAEFrame " rel="parent" title="3.5 MiniAEFrame " href="module-MiniAEFrame.html"><img src='../icons/up.png' border='0' height='32' alt='Up One Level' width='32' /></A></td> <td class='online-navigation'><a rel="next" title="4. MacOS Toolbox Modules" rel="next" title="4. 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MacOS Toolbox Modules</A> </div> </div> <hr /> <span class="release-info">Release 2.3.4, documentation updated on May 20, 2004.</span> </DIV> <!--End of Navigation Panel--> <ADDRESS> See <i><a href="about.html">About this document...</a></i> for information on suggesting changes. </ADDRESS> </BODY> </HTML>