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

** $Id: qt/qscrollbar.h   3.3.8   edited Jan 11 14:38 $
** Definition of QScrollBar class
** Created : 940427
** Copyright (C) 1992-2007 Trolltech ASA.  All rights reserved.
** This file is part of the widgets 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:
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** review the following information:
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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.
** This file is provided "AS IS" with NO WARRANTY OF ANY KIND,
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class QTimer;

#ifndef QT_H
#include "qwidget.h"
#include "qrangecontrol.h"
#endif // QT_H


class Q_EXPORT QScrollBar : public QWidget, public QRangeControl
    Q_PROPERTY( int minValue READ minValue WRITE setMinValue )
    Q_PROPERTY( int maxValue READ maxValue WRITE setMaxValue )
    Q_PROPERTY( int lineStep READ lineStep WRITE setLineStep )
    Q_PROPERTY( int pageStep READ pageStep WRITE setPageStep )
    Q_PROPERTY( int value READ value WRITE setValue )
    Q_PROPERTY( bool tracking READ tracking WRITE setTracking )
    Q_PROPERTY( bool draggingSlider READ draggingSlider )
    Q_PROPERTY( Orientation orientation READ orientation WRITE setOrientation )

    QScrollBar( QWidget *parent, const char* name = 0 );
    QScrollBar( Orientation, QWidget *parent, const char* name = 0 );
    QScrollBar( int minValue, int maxValue, int lineStep, int pageStep,
		int value, Orientation, QWidget *parent, const char* name = 0 );

    virtual void setOrientation( Orientation );
    Orientation orientation() const;
    virtual void setTracking( bool enable );
    bool	tracking() const;
    bool	draggingSlider() const;

    virtual void setPalette( const QPalette & );
    virtual QSize sizeHint() const;
    virtual void setSizePolicy( QSizePolicy sp );
    void setSizePolicy( QSizePolicy::SizeType hor, QSizePolicy::SizeType ver, bool hfw = FALSE );

    int	 minValue() const;
    int	 maxValue() const;
    void setMinValue( int );
    void setMaxValue( int );
    int	 lineStep() const;
    int	 pageStep() const;
    void setLineStep( int );
    void setPageStep( int );
    int  value() const;

    int		sliderStart() const;
    QRect	sliderRect() const;

public slots:
    void setValue( int );

    void	valueChanged( int value );
    void	sliderPressed();
    void	sliderMoved( int value );
    void	sliderReleased();
    void	nextLine();
    void	prevLine();
    void	nextPage();
    void	prevPage();

    void 	wheelEvent( QWheelEvent * );
    void	keyPressEvent( QKeyEvent * );
    void	resizeEvent( QResizeEvent * );
    void	paintEvent( QPaintEvent * );

    void	mousePressEvent( QMouseEvent * );
    void	mouseReleaseEvent( QMouseEvent * );
    void	mouseMoveEvent( QMouseEvent * );
    void	contextMenuEvent( QContextMenuEvent * );
    void	hideEvent( QHideEvent* );

    void	valueChange();
    void	stepChange();
    void	rangeChange();

    void	styleChange( QStyle& );

private slots:
    void doAutoRepeat();

    void init();
    void positionSliderFromValue();
    int calculateValueFromSlider() const;

    void startAutoRepeat();
    void stopAutoRepeat();

    int rangeValueToSliderPos( int val ) const;
    int sliderPosToRangeValue( int val ) const;

    void action( int control );

    void drawControls( uint controls, uint activeControl ) const;
    void drawControls( uint controls, uint activeControl,
		       QPainter *p ) const;

    uint pressedControl;
    bool track;
    bool clickedAt;
    Orientation orient;

    int slidePrevVal;
    QCOORD sliderPos;
    QCOORD clickOffset;

    QTimer * repeater;
    void * d;

private:	// Disabled copy constructor and operator=
#if defined(Q_DISABLE_COPY)
    QScrollBar( const QScrollBar & );
    QScrollBar &operator=( const QScrollBar & );

inline void QScrollBar::setTracking( bool t )
    track = t;

inline bool QScrollBar::tracking() const
    return track;

inline QScrollBar::Orientation QScrollBar::orientation() const
    return orient;

inline int QScrollBar::sliderStart() const
    return sliderPos;

inline void QScrollBar::setSizePolicy( QSizePolicy::SizeType hor, QSizePolicy::SizeType ver, bool hfw )
    QWidget::setSizePolicy( hor, ver, hfw ); 


#endif // QSCROLLBAR_H

Copyright © 2007 TrolltechTrademarks
Qt 3.3.8