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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"><html><head><meta http-equiv="Content-Type" content="text/html;charset=iso-8859-1"><title>notifier.h File Reference</title><link href="doxygen.css" rel="stylesheet" type="text/css"></head><body><!-- Generated by Doxygen 1.2.18 --><center><a class="qindex" href="index.html">Main Page</a> <a class="qindex" href="namespaces.html">Namespace List</a> <a class="qindex" href="hierarchy.html">Class Hierarchy</a> <a class="qindex" href="annotated.html">Compound List</a> <a class="qindex" href="files.html">File List</a> <a class="qindex" href="functions.html">Compound Members</a> <a class="qindex" href="globals.html">File Members</a> </center><hr><h1>notifier.h File Reference</h1><code>#include <ptlib.h></code><br><code>#include <<a class="el" href="smartptr_8h-source.html">ptlib/smartptr.h</a>></code><br><p><a href="notifier_8h-source.html">Go to the source code of this file.</a><table border=0 cellpadding=0 cellspacing=0><tr><td></td></tr><tr><td colspan=2><br><h2>Compounds</h2></td></tr><tr><td nowrap align=right valign=top>class </td><td valign=bottom><a class="el" href="classPNotifier.html">PNotifier</a></td></tr><tr><td nowrap align=right valign=top>class </td><td valign=bottom><a class="el" href="classPNotifierFunction.html">PNotifierFunction</a></td></tr><tr><td colspan=2><br><h2>Defines</h2></td></tr><tr><td nowrap align=right valign=top>#define </td><td valign=bottom><a class="el" href="notifier_8h.html#a0">PDECLARE_NOTIFIER</a>(notifier, notifiee, func)</td></tr><tr><td nowrap align=right valign=top>#define </td><td valign=bottom><a class="el" href="notifier_8h.html#a1">PCREATE_NOTIFIER2</a>(obj, func) <a class="el" href="classPNotifier.html">PNotifier</a>(new func##_PNotifier(obj))</td></tr><tr><td nowrap align=right valign=top>#define </td><td valign=bottom><a class="el" href="notifier_8h.html#a2">PCREATE_NOTIFIER</a>(func) PCREATE_NOTIFIER2(this, func)</td></tr></table><hr><h2>Define Documentation</h2><a name="a2" doxytag="notifier.h::PCREATE_NOTIFIER"></a><p><table width="100%" cellpadding="2" cellspacing="0" border="0"> <tr> <td class="md"> <table cellpadding="0" cellspacing="0" border="0"> <tr> <td class="md" nowrap valign="top"> #define PCREATE_NOTIFIER</td> <td class="md" valign="top">( </td> <td class="md" nowrap valign="top">func </td> <td class="mdname1" valign="top" nowrap> </td> <td class="md" valign="top">) </td> <td class="md" nowrap> PCREATE_NOTIFIER2(this, func) </table> </td> </tr></table><table cellspacing=5 cellpadding=0 border=0> <tr> <td> </td> <td><p>Create a notifier object instance. This macro creates an instance of the particular PNotifier# class using the func# parameter as the member function to call.<p>The this# object is used as the instance to call the function against. The <a class="el" href="notifier_8h.html#a1">PCREATE_NOTIFIER2</a># macro may be used if the instance to be called is not the current object instance. </td> </tr></table><a name="a1" doxytag="notifier.h::PCREATE_NOTIFIER2"></a><p><table width="100%" cellpadding="2" cellspacing="0" border="0"> <tr> <td class="md"> <table cellpadding="0" cellspacing="0" border="0"> <tr> <td class="md" nowrap valign="top"> #define PCREATE_NOTIFIER2</td> <td class="md" valign="top">( </td> <td class="md" nowrap valign="top">obj, <tr> <td></td> <td></td> <td class="md" nowrap>func </td> <td class="mdname1" valign="top" nowrap> </td> <td class="md" valign="top">) </td> <td class="md" nowrap> <a class="el" href="classPNotifier.html">PNotifier</a>(new func##_PNotifier(obj)) </table> </td> </tr></table><table cellspacing=5 cellpadding=0 border=0> <tr> <td> </td> <td><p>Create a notifier object instance. This macro creates an instance of the particular PNotifier# class using the func# parameter as the member function to call.<p>The obj# parameter is the instance to call the function against. If the instance to be called is the current instance, ie obj# is to this# the the <a class="el" href="notifier_8h.html#a2">PCREATE_NOTIFIER</a># macro should be used. </td> </tr></table><a name="a0" doxytag="notifier.h::PDECLARE_NOTIFIER"></a><p><table width="100%" cellpadding="2" cellspacing="0" border="0"> <tr> <td class="md"> <table cellpadding="0" cellspacing="0" border="0"> <tr> <td class="md" nowrap valign="top"> #define PDECLARE_NOTIFIER</td> <td class="md" valign="top">( </td> <td class="md" nowrap valign="top">notifier, <tr> <td></td> <td></td> <td class="md" nowrap>notifiee, <tr> <td></td> <td></td> <td class="md" nowrap>func </td> <td class="mdname1" valign="top" nowrap> </td> <td class="md" valign="top">) </td> <td class="md" nowrap> </table> </td> </tr></table><table cellspacing=5 cellpadding=0 border=0> <tr> <td> </td> <td><p><b>Value:</b><div class="fragment"><pre><span class="keyword">class </span>func##_PNotifier : <span class="keyword">public</span> <a class="code" href="classPNotifierFunction.html">PNotifierFunction</a> { \ <span class="keyword">public</span>: \ func##_PNotifier(notifiee * obj) : <a class="code" href="classPNotifierFunction.html">PNotifierFunction</a>(obj) { } \ <span class="keyword">virtual</span> <span class="keywordtype">void</span> Call(<a class="code" href="classPObject.html">PObject</a> & note, INT extra) <span class="keyword">const</span> \ { ((notifiee*)object)->func((notifier &)note, extra); } \ }; \ <span class="keyword">friend</span> <span class="keyword">class </span>func##_PNotifier; \ <span class="keyword">virtual</span> <span class="keywordtype">void</span> func(notifier & note, INT extra)</pre></div>Declare a notifier object class. This macro declares the descendent class of PNotifierFunction# that will be used in instances of PNotifier# created by the <a class="el" href="notifier_8h.html#a2">PCREATE_NOTIFIER</a># or <a class="el" href="notifier_8h.html#a1">PCREATE_NOTIFIER2</a># macros.<p>The macro is expected to be used inside a class declaration. The class it declares will therefore be a nested class within the class being declared. The name of the new nested class is derived from the member function name which should guarentee the class names are unique.<p>The notifier# parameter is the class of the function that will be calling the notification function. The notifiee# parameter is the class to which the called member function belongs. Finally the func# parameter is the name of the member function to be declared.<p>This macro will also declare the member function itself. This will be: \begin{verbatim} void func(notifier & n, INT extra) \end{verbatim}<p>The implementation of the function is left for the user. </td> </tr></table><hr><address style="align: right;"><small>Generated on Wed Sep 29 22:44:12 2004 for PWLib by<a href="http://www.doxygen.org/index.html"><img src="doxygen.png" alt="doxygen" align="middle" border=0 width=110 height=53></a>1.2.18 </small></address></body></html>⌨️ 快捷键说明
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