Question

这里是qsound.h包含文件的所有文本，一字不差。它仅仅用来说明，版权由Trolltech保留。

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/****************************************************************************
** $Id:  qt/qsound.h   3.0.5   edited Oct 12 2001 $
**
** Definition of QSound class and QAuServer internal class
**
** Created : 000117
**
** Copyright (C) 1999-2000 Trolltech AS.  All rights reserved.
**
** This file is part of the kernel module of the Qt GUI Toolkit.
**
** This file may be distributed under the terms of the Q Public License
** as defined by Trolltech AS of Norway and appearing in the file
** LICENSE.QPL included in the packaging of this file.
**
** This file may be distributed and/or modified under the terms of the
** GNU General Public License version 2 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file.
**
** Licensees holding valid Qt Enterprise Edition or Qt Professional Edition
** 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
** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
**
** See http://www.trolltech.com/pricing.html or email sales@trolltech.com for
**   information about Qt Commercial License Agreements.
** See http://www.trolltech.com/qpl/ for QPL licensing information.
** See http://www.trolltech.com/gpl/ for GPL licensing information.
**
** Contact info@trolltech.com if any conditions of this licensing are
** not clear to you.
**
**********************************************************************/
#ifndef QSOUND_H
#define QSOUND_H

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

#ifndef QT_NO_SOUND

class QSoundData;

class Q_EXPORT QSound : public QObject {
    Q_OBJECT
public:
    static bool isAvailable();
    static void play(const QString& filename);

    QSound(const QString& filename, QObject* parent=0, const char* name=0);
    ~QSound();

    /* Coming soon...
	?
    QSound(int hertz, Type type=Mono);
    int play(const ushort* data, int samples);
    bool full();
    signal void notFull();
	?
    */

#ifndef QT_NO_COMPAT
    static bool available() { return isAvailable(); }
#endif

    int loops() const;
    int loopsRemaining() const;
    void setLoops(int);
    QString fileName() const;

    bool isFinished() const;

public slots:
    void play();
    void stop();

private:
    QSoundData* d;
    friend class QAuServer;
};


/*
  QAuServer is an INTERNAL class.  If you wish to provide support for
  additional audio servers, you can make a subclass of QAuServer to do
  so, HOWEVER, your class may need to be re-engineered to some degree
  with each new Qt release, including minor releases.

  QAuBucket is whatever you want.
*/

class QAuBucket {
public:
    virtual ~QAuBucket();
};

class QAuServer : public QObject {
    Q_OBJECT

public:
    QAuServer(QObject* parent, const char* name);
    ~QAuServer();

    virtual void init(QSound*);
    virtual void play(const QString& filename);
    virtual void play(QSound*)=0;
    virtual void stop(QSound*)=0;
    virtual bool okay()=0;

protected:
    void setBucket(QSound*, QAuBucket*);
    QAuBucket* bucket(QSound*);
    int decLoop(QSound*);
};

#endif // QT_NO_SOUND

#endif