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# qptrqueue.h

This is the verbatim text of the qptrqueue.h include file. It is provided only for illustration; the copyright remains with Trolltech.

    /****************************************************************************
    ** $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
    ** 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.
    **
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    ** 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
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    **
    ** 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.
    **
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    #ifndef QPTRQUEUE_H
    #define QPTRQUEUE_H

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

    template<class type>
    class QPtrQueue : protected QGList
    {
    public:
        QPtrQueue()				{}
        QPtrQueue( const QPtrQueue<type> &q ) : QGList(q) {}
        ~QPtrQueue()			{ clear(); }
        QPtrQueue<type>& operator=(const QPtrQueue<type> &q)
    			{ return (QPtrQueue<type>&)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& read( QDataStream&, QPtrCollection::Item& );
        virtual QDataStream& write( QDataStream&, QPtrCollection::Item ) const;
    #endif

    private:
        void  deleteItem( Item d );
    };

    #if !defined(Q_BROKEN_TEMPLATE_SPECIALIZATION)
    template<> inline void QPtrQueue<void>::deleteItem( QPtrCollection::Item )
    {
    }
    #endif

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

    #ifndef QT_NO_COMPAT
    #define QQueue QPtrQueue
    #endif

    #endif // QPTRQUEUE_H