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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"><html><head><meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"><title>Qt Toolkit - qscrollbar.h include file</title><style type="text/css"><!--h3.fn,span.fn { margin-left: 1cm; text-indent: -1cm; }a:link { color: #004faf; text-decoration: none }a:visited { color: #672967; text-decoration: none }body { background: white; color: black; }--></style></head><body bgcolor="#ffffff"><table width="100%"><tr><td><a href="index.html"><img width="100" height="100" src="qtlogo.png"alt="Home" border="0"><img width="100"height="100" src="face.png" alt="Home" border="0"></a><td valign="top"><div align="right"><img src="dochead.png" width="472" height="27"><br><a href="classes.html"><b>Classes</b></a>- <a href="annotated.html">Annotated</a>- <a href="hierarchy.html">Tree</a>- <a href="functions.html">Functions</a>- <a href="index.html">Home</a>- <a href="topicals.html"><b>Structure</b> <font face="Arial,Helvetica,Geneva,Swiss,SunSans-Regular" align="center" size=32>Qte</font></a></div></table><h1 align=center>qscrollbar.h</h1><br clear="all">This is the verbatim text of the qscrollbar.h include file. It isprovided only for illustration; the copyrightremains with Trolltech.<hr><pre>/****************************************************************************** $Id: qt/src/widgets/qscrollbar.h 2.3.8 edited 2004-05-12 $**** Definition of QScrollBar class**** Created : 940427**** Copyright (C) 1992-2000 Trolltech AS. All rights reserved.**** This file is part of the widgets 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 QSCROLLBAR_H#define QSCROLLBAR_Hclass <a href="qtimer.html">QTimer</a>;#ifndef QT_H#include "qwidget.h"#include "qrangecontrol.h"#include "qdrawutil.h" // REMOVE THIS IN 3.0#endif // QT_H#ifndef QT_NO_SCROLLBARclass Q_EXPORT <a href="qscrollbar.html">QScrollBar</a> : public <a href="qwidget.html">QWidget</a>, public <a href="qrangecontrol.html">QRangeControl</a>{ Q_OBJECT 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 ) public: 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 & ); QSize sizeHint() const; QSizePolicy sizePolicy() const; 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; void setValue( int );signals: void valueChanged( int value ); void sliderPressed(); void sliderMoved( int value ); void sliderReleased(); void nextLine(); void prevLine(); void nextPage(); void prevPage();protected: void wheelEvent( QWheelEvent * ); void keyPressEvent( QKeyEvent * ); void resizeEvent( QResizeEvent * ); void paintEvent( QPaintEvent * ); void mousePressEvent( QMouseEvent * ); void mouseReleaseEvent( QMouseEvent * ); void mouseMoveEvent( QMouseEvent * ); void valueChange(); void stepChange(); void rangeChange(); int sliderStart() const; QRect sliderRect() const; void styleChange( QStyle& );private slots: void doAutoRepeat();private: void init(); void positionSliderFromValue(); int calculateValueFromSlider() const; void sliderMinMax( int &, int & ) const; void metrics( int &, int &, int &, int& ) const; void startAutoRepeat(); void stopAutoRepeat(); QStyle::ScrollControl pointOver( const QPoint &p ) const; int rangeValueToSliderPos( int val ) const; int sliderPosToRangeValue( int val ) const; void action( QStyle::ScrollControl control ); void drawControls( uint controls, uint activeControl ) const; void drawControls( uint controls, uint activeControl, QPainter *p ) const; uint pressedControl : 8; uint track : 1; uint clickedAt : 1; uint orient : 1; 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 & );#endif};inline void QScrollBar::setTracking( bool t ){ track = t;}inline bool QScrollBar::tracking() const{ return track;}inline QScrollBar::Orientation QScrollBar::orientation() const{ return (Orientation)orient;}inline int QScrollBar::sliderStart() const{ return sliderPos;}#endif // QT_NO_SCROLLBAR#endif // QSCROLLBAR_H</pre><p><address><hr><div align="center"><table width="100%" cellspacing="0" border="0"><tr><td>Copyright ⌨️ 快捷键说明
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