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<p>This is the verbatim text of the qptrqueue.h include file. It is provided only for illustration; the copyright remains with Trolltech.
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/****************************************************************************
** $Id: qt/qptrqueue.h   3.3.8   edited Jan 11 14:38 $
**
** Definition of QPtrQueue template/macro class
**
** Created : 920917
**
** Copyright (C) 1992-2007 Trolltech ASA.  All rights reserved.
**
** This file is part of the tools 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
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**********************************************************************/

#ifndef QPTRQUEUE_H
#define QPTRQUEUE_H

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

template&lt;class type&gt;
class QPtrQueue : protected QGList
{
public:
    QPtrQueue()				{}
    QPtrQueue( const QPtrQueue&lt;type&gt; &amp;q ) : QGList(q) {}
    ~QPtrQueue()			{ clear(); }
    QPtrQueue&lt;type&gt;&amp; operator=(const QPtrQueue&lt;type&gt; &amp;q)
			{ return (QPtrQueue&lt;type&gt;&amp;)QGList::operator=(q); }
    bool  autoDelete() const		{ return QPtrCollection::autoDelete(); }
    void  setAutoDelete( bool del )	{ QPtrCollection::setAutoDelete(del); }
    uint  count()   const		{ return QGList::count(); }
    bool  isEmpty() const		{ return QGList::count() == 0; }
    void  enqueue( const type *d )	{ QGList::append(Item(d)); }
    type *dequeue()			{ return (type *)QGList::takeFirst();}
    bool  remove()			{ return QGList::removeFirst(); }
    void  clear()			{ QGList::clear(); }
    type *head()    const		{ return (type *)QGList::cfirst(); }
	  operator type *() const	{ return (type *)QGList::cfirst(); }
    type *current() const		{ return (type *)QGList::cfirst(); }

#ifdef Q_QDOC
protected:
    virtual QDataStream&amp; read( QDataStream&amp;, QPtrCollection::Item&amp; );
    virtual QDataStream&amp; write( QDataStream&amp;, QPtrCollection::Item ) const;
#endif

private:
    void  deleteItem( Item d );
};

#if !defined(Q_BROKEN_TEMPLATE_SPECIALIZATION)
template&lt;&gt; inline void QPtrQueue&lt;void&gt;::deleteItem( QPtrCollection::Item )
{
}
#endif

template&lt;class type&gt; inline void QPtrQueue&lt;type&gt;::deleteItem( QPtrCollection::Item d )
{
    if ( del_item ) delete (type *)d;
}

#ifndef QT_NO_COMPAT
#define QQueue QPtrQueue
#endif

#endif // QPTRQUEUE_H
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