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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"><!-- /home/reggie/tmp/qt-3.0-reggie-5401/qt-x11-commercial-3.0.5/src/kernel/qevent.cpp:1984 --><html><head><meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"><title>QChildEvent Class</title><style type="text/css"><!--h3.fn,span.fn { margin-left: 1cm; text-indent: -1cm; }a:link { color: #004faf; text-decoration: none }a:visited { color: #672967; text-decoration: none }body { background: #ffffff; color: black; }--></style></head><body><table border="0" cellpadding="0" cellspacing="0" width="100%"><tr bgcolor="#E5E5E5"><td valign=center> <a href="index.html"><font color="#004faf">Home</font></a> | <a href="classes.html"><font color="#004faf">All Classes</font></a> | <a href="mainclasses.html"><font color="#004faf">Main Classes</font></a> | <a href="annotated.html"><font color="#004faf">Annotated</font></a> | <a href="groups.html"><font color="#004faf">Grouped Classes</font></a> | <a href="functions.html"><font color="#004faf">Functions</font></a></td><td align="right" valign="center"><img src="logo32.png" align="right" width="64" height="32" border="0"></td></tr></table><h1 align=center>QChildEvent Class Reference</h1><p>The QChildEvent class contains event parameters for child objectevents.<a href="#details">More...</a><p><tt>#include <<a href="qevent-h.html">qevent.h</a>></tt><p>Inherits <a href="qevent.html">QEvent</a>.<p><a href="qchildevent-members.html">List of all member functions.</a><h2>Public Members</h2><ul><li><div class=fn><a href="#QChildEvent"><b>QChildEvent</b></a> ( Type type, QObject * child )</div></li><li><div class=fn>QObject * <a href="#child"><b>child</b></a> () const</div></li><li><div class=fn>bool <a href="#inserted"><b>inserted</b></a> () const</div></li><li><div class=fn>bool <a href="#removed"><b>removed</b></a> () const</div></li></ul><hr><a name="details"></a><h2>Detailed Description</h2>The QChildEvent class contains event parameters for child objectevents.<p> <p> Child events are sent to objects when children are inserted orremoved.<p> A <a href="qevent.html#Type-enum">ChildRemoved</a> event is sent immediately, but a <a href="qevent.html#Type-enum">ChildInserted</a> event is <em>posted</em> (with <a href="qapplication.html#postEvent">QApplication::postEvent</a>()).<p> Note that if a child is removed immediately after it is inserted,the <a href="qevent.html#Type-enum">ChildInserted</a> event may be suppressed, but the <a href="qevent.html#Type-enum">ChildRemoved</a> event will always be sent. In this case there will bea <a href="qevent.html#Type-enum">ChildRemoved</a> event without a corresponding <a href="qevent.html#Type-enum">ChildInserted</a>event.<p> The handler for these events is <a href="qobject.html#childEvent">QObject::childEvent</a>().<p>See also <a href="events.html">Event Classes</a>.<hr><h2>Member Function Documentation</h2><h3 class=fn><a name="QChildEvent"></a>QChildEvent::QChildEvent ( <a href="qevent.html#Type-enum">Type</a> type, <a href="qobject.html">QObject</a> * child )</h3><p> Constructs a child event object. The <em>child</em> is the object thatis to be removed or inserted.<p> The <em>type</em> parameter must be either <a href="qevent.html#Type-enum">QEvent::ChildInserted</a> or<a href="qevent.html#Type-enum">QEvent::ChildRemoved</a>.<h3 class=fn><a href="qobject.html">QObject</a> * <a name="child"></a>QChildEvent::child () const</h3><p> Returns the child widget that was inserted or removed.<h3 class=fn>bool <a name="inserted"></a>QChildEvent::inserted () const</h3><p> Returns TRUE if the widget received a new child; otherwise returnsFALSE.<h3 class=fn>bool <a name="removed"></a>QChildEvent::removed () const</h3><p> Returns TRUE if the object lost a child; otherwise returns FALSE.<!-- eof --><hr><p>This file is part of the <a href="index.html">Qt toolkit</a>.Copyright © 1995-2002<a href="http://www.trolltech.com/">Trolltech</a>. All Rights Reserved.<p><address><hr><div align=center><table width=100% cellspacing=0 border=0><tr><td>Copyright © 2002 <a href="http://www.trolltech.com">Trolltech</a><td><a href="http://www.trolltech.com/trademarks.html">Trademarks</a><td align=right><div align=right>Qt version 3.0.5</div></table></div></address></body></html>⌨️ 快捷键说明
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