Sophie: qt3-devel-3.3.8b-6ark i586

qt3-devel-3.3.8b-6ark.i586.rpm

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<!-- /home/espenr/tmp/qt-3.3.8-espenr-2499/qt-x11-free-3.3.8/include/qguardedptr.h:1 -->
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>qguardedptr.h Include File</title>
<style type="text/css"><!--
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&nbsp;Classes</font></a>
 | <a href="mainclasses.html">
<font color="#004faf">Main&nbsp;Classes</font></a>
 | <a href="annotated.html">
<font color="#004faf">Annotated</font></a>
 | <a href="groups.html">
<font color="#004faf">Grouped&nbsp;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>qguardedptr.h</h1>

<p>This is the verbatim text of the qguardedptr.h include file. It is provided only for illustration; the copyright remains with Trolltech.
<hr>
<pre>
/****************************************************************************
** $Id: qt/qguardedptr.h   3.3.8   edited Jan 11 14:38 $
**
** Definition of QGuardedPtr class
**
** Created : 990929
**
** Copyright (C) 1992-2007 Trolltech ASA.  All rights reserved.
**
** This file is part of the kernel module of the Qt GUI Toolkit.
**
** This file may be used under the terms of the GNU General Public
** License versions 2.0 or 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file. Alternatively you may (at your option) use any
** later version of the GNU General Public License if such license has
** been publicly approved by Trolltech ASA (or its successors, if any)
** and the KDE Free Qt Foundation.
**
** Please review the following information to ensure GNU General
** Public Licensing requirements will be met:
** http://trolltech.com/products/qt/licenses/licensing/opensource/.
** If you are unsure which license is appropriate for your use, please
** review the following information:
** http://trolltech.com/products/qt/licenses/licensing/licensingoverview
** or contact the sales department at sales@trolltech.com.
**
** This file may be used under the terms of the Q Public License as
** defined by Trolltech ASA and appearing in the file LICENSE.QPL
** included in the packaging of this file.  Licensees holding valid Qt
** Commercial licenses may use this file in accordance with the Qt
** Commercial License Agreement provided with the Software.
**
** This file is provided "AS IS" with NO WARRANTY OF ANY KIND,
** INCLUDING THE WARRANTIES OF DESIGN, MERCHANTABILITY AND FITNESS FOR
** A PARTICULAR PURPOSE. Trolltech reserves all rights not granted
** herein.
**
**********************************************************************/

#ifndef QGUARDEDPTR_H
#define QGUARDEDPTR_H

#ifndef QT_H
#include "qobject.h"
#endif // QT_H

// ### 4.0: rename to something without Private in it. Not really internal.
class Q_EXPORT QGuardedPtrPrivate : public QObject, public QShared
{
    Q_OBJECT
public:
    QGuardedPtrPrivate( QObject* );
    ~QGuardedPtrPrivate();

    QObject* object() const;
    void reconnect( QObject* );

private slots:
    void objectDestroyed();

private:
    QObject* obj;
#if defined(Q_DISABLE_COPY) // Disabled copy constructor and operator=
    QGuardedPtrPrivate( const QGuardedPtrPrivate &amp; );
    QGuardedPtrPrivate &amp;operator=( const QGuardedPtrPrivate &amp; );
#endif
};

template &lt;class T&gt;
class QGuardedPtr
{
public:
    QGuardedPtr() : priv( new QGuardedPtrPrivate( 0 ) ) {}

    QGuardedPtr( T* o) {
	priv = new QGuardedPtrPrivate( (QObject*)o );
    }

    QGuardedPtr(const QGuardedPtr&lt;T&gt; &amp;p) {
	priv = p.priv;
	ref();
    }

    ~QGuardedPtr() { deref(); }

    QGuardedPtr&lt;T&gt; &amp;operator=(const QGuardedPtr&lt;T&gt; &amp;p) {
	if ( priv != p.priv ) {
	    deref();
	    priv = p.priv;
	    ref();
	}
	return *this;
    }

    QGuardedPtr&lt;T&gt; &amp;operator=(T* o) {
	if ( priv &amp;&amp; priv-&gt;count == 1 ) {
	    priv-&gt;reconnect( (QObject*)o );
	} else {
	    deref();
	    priv = new QGuardedPtrPrivate( (QObject*)o );
	}
	return *this;
    }

    bool operator==( const QGuardedPtr&lt;T&gt; &amp;p ) const {
	return (T*)(*this) == (T*) p;
    }

    bool operator!= ( const QGuardedPtr&lt;T&gt;&amp; p ) const {
	return !( *this == p );
    }

    bool isNull() const { return !priv || !priv-&gt;object(); }

    T* operator-&gt;() const { return (T*)(priv?priv-&gt;object():0); }

    T&amp; operator*() const { return *((T*)(priv?priv-&gt;object():0)); }

    operator T*() const { return (T*)(priv?priv-&gt;object():0); }

private:

    void ref() { if (priv) priv-&gt;ref(); }

    void deref() {
	if ( priv &amp;&amp; priv-&gt;deref() )
	    delete priv;
    }

    QGuardedPtrPrivate* priv;
};




inline QObject* QGuardedPtrPrivate::object() const
{
    return obj;
}

#define Q_DEFINED_QGUARDEDPTR
#include "qwinexport.h"
#endif
</pre>
<!-- eof -->
<p><address><hr><div align=center>
<table width=100% cellspacing=0 border=0><tr>
<td>Copyright &copy; 2007
<a href="troll.html">Trolltech</a><td align=center><a href="trademarks.html">Trademarks</a>
<td align=right><div align=right>Qt 3.3.8</div>
</table></div></address></body>
</html>