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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"><!-- /home/reggie/tmp/qt-3.0-reggie-5401/qt-x11-commercial-3.0.5/examples/rangecontrols/rangecontrols.doc:4 --><html><head><meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"><title>Range controls</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: #ffffff; color: black; }--></style></head><body><table border="0" cellpadding="0" cellspacing="0" width="100%"><tr bgcolor="#E5E5E5"><td valign=center> <a href="index.html"><font color="#004faf">Home</font></a> | <a href="classes.html"><font color="#004faf">All Classes</font></a> | <a href="mainclasses.html"><font color="#004faf">Main Classes</font></a> | <a href="annotated.html"><font color="#004faf">Annotated</font></a> | <a href="groups.html"><font color="#004faf">Grouped Classes</font></a> | <a href="functions.html"><font color="#004faf">Functions</font></a></td><td align="right" valign="center"><img src="logo32.png" align="right" width="64" height="32" border="0"></td></tr></table><h1 align=center>Range controls</h1> <p> This examples shows various types of range controls thatare supported by Qt: dials, spin boxes and sliders.<p> <hr><p> Header file:<p> <pre>/****************************************************************************** $Id: qt/rangecontrols.h 3.0.5 edited Oct 12 2001 $**** Copyright (C) 1992-2000 Trolltech AS. All rights reserved.**** This file is part of an example program for Qt. This example** program may be used, distributed and modified without limitation.*******************************************************************************/#ifndef RANGECONTROLS_H#define RANGECONTROLS_H#include <<a href="qvbox-h.html">qvbox.h</a>>class QCheckBox;class RangeControls : public <a href="qvbox.html">QVBox</a>{ <a href="metaobjects.html#Q_OBJECT">Q_OBJECT</a>public: RangeControls( <a href="qwidget.html">QWidget</a> *parent = 0, const char *name = 0 );private: <a href="qcheckbox.html">QCheckBox</a> *notches, *wrapping;};#endif</pre><p> <hr><p> Implementation:<p> <pre>/****************************************************************************** $Id: qt/rangecontrols.cpp 3.0.5 edited Oct 12 2001 $**** Copyright (C) 1992-2000 Trolltech AS. All rights reserved.**** This file is part of an example program for Qt. This example** program may be used, distributed and modified without limitation.*******************************************************************************/#include "rangecontrols.h"#include <<a href="qhbox-h.html">qhbox.h</a>>#include <<a href="qlcdnumber-h.html">qlcdnumber.h</a>>#include <<a href="qspinbox-h.html">qspinbox.h</a>>#include <<a href="qlabel-h.html">qlabel.h</a>>#include <<a href="qstring-h.html">qstring.h</a>>#include <<a href="qslider-h.html">qslider.h</a>>#include <<a href="qcheckbox-h.html">qcheckbox.h</a>>#include <limits.h><a name="f447"></a>RangeControls::RangeControls( <a href="qwidget.html">QWidget</a> *parent, const char *name ) : <a href="qvbox.html">QVBox</a>( parent, name ){ <a href="qhbox.html">QHBox</a> *row1 = new <a href="qhbox.html">QHBox</a>( this ); <a href="qvbox.html">QVBox</a> *cell2 = new <a href="qvbox.html">QVBox</a>( row1 );<a name="x1492"></a> cell2-><a href="qframe.html#setMargin">setMargin</a>( 10 );<a name="x1491"></a> cell2-><a href="qframe.html#setFrameStyle">setFrameStyle</a>( QFrame::WinPanel | QFrame::Sunken ); (void)new <a href="qwidget.html">QWidget</a>( cell2 ); <a href="qlabel.html">QLabel</a> *label1 = new <a href="qlabel.html">QLabel</a>( QString( "Enter a value between\n%1 and %2:" ).arg( -INT_MAX ).arg( INT_MAX ), cell2 );<a name="x1501"></a><a name="x1493"></a> label1-><a href="qwidget.html#setMaximumHeight">setMaximumHeight</a>( label1-><a href="qwidget.html#sizeHint">sizeHint</a>().height() ); <a href="qspinbox.html">QSpinBox</a> *sb1 = new <a href="qspinbox.html">QSpinBox</a>( -INT_MAX, INT_MAX, 1, cell2 );<a name="x1500"></a> sb1-><a href="qspinbox.html#setValue">setValue</a>( 0 ); <a href="qlabel.html">QLabel</a> *label2 = new <a href="qlabel.html">QLabel</a>( "Enter a zoom value:", cell2 ); label2-><a href="qwidget.html#setMaximumHeight">setMaximumHeight</a>( label2-><a href="qwidget.html#sizeHint">sizeHint</a>().height() ); <a href="qspinbox.html">QSpinBox</a> *sb2 = new <a href="qspinbox.html">QSpinBox</a>( 0, 1000, 10, cell2 );<a name="x1499"></a> sb2-><a href="qspinbox.html#setSuffix">setSuffix</a>( " %" );<a name="x1498"></a> sb2-><a href="qspinbox.html#setSpecialValueText">setSpecialValueText</a>( "Automatic" ); <a href="qlabel.html">QLabel</a> *label3 = new <a href="qlabel.html">QLabel</a>( "Enter a price:", cell2 ); label3-><a href="qwidget.html#setMaximumHeight">setMaximumHeight</a>( label3-><a href="qwidget.html#sizeHint">sizeHint</a>().height() ); <a href="qspinbox.html">QSpinBox</a> *sb3 = new <a href="qspinbox.html">QSpinBox</a>( 0, INT_MAX, 1, cell2 );<a name="x1497"></a> sb3-><a href="qspinbox.html#setPrefix">setPrefix</a>( "$" ); sb3-><a href="qspinbox.html#setValue">setValue</a>( 355 ); (void)new <a href="qwidget.html">QWidget</a>( cell2 ); <a href="qhbox.html">QHBox</a> *row2 = new <a href="qhbox.html">QHBox</a>( this ); <a href="qvbox.html">QVBox</a> *cell3 = new <a href="qvbox.html">QVBox</a>( row2 ); cell3-><a href="qframe.html#setMargin">setMargin</a>( 10 ); cell3-><a href="qframe.html#setFrameStyle">setFrameStyle</a>( QFrame::WinPanel | QFrame::Sunken ); <a href="qslider.html">QSlider</a> *hslider = new <a href="qslider.html">QSlider</a>( 0, 64, 1, 33, Qt::Horizontal, cell3 ); <a href="qlcdnumber.html">QLCDNumber</a> *lcd2 = new <a href="qlcdnumber.html">QLCDNumber</a>( 2, cell3 );<a name="x1494"></a> lcd2-><a href="qlcdnumber.html#display">display</a>( 33 );<a name="x1495"></a> lcd2-><a href="qlcdnumber.html#setSegmentStyle">setSegmentStyle</a>( QLCDNumber::Filled );<a name="x1496"></a> <a href="qobject.html#connect">connect</a>( hslider, SIGNAL( <a href="qslider.html#valueChanged">valueChanged</a>( int ) ), lcd2, SLOT( <a href="qlcdnumber.html#display">display</a>( int ) ) ); <a href="qhbox.html">QHBox</a> *cell4 = new <a href="qhbox.html">QHBox</a>( row2 ); cell4-><a href="qframe.html#setFrameStyle">setFrameStyle</a>( QFrame::WinPanel | QFrame::Sunken ); cell4-><a href="qframe.html#setMargin">setMargin</a>( 10 ); <a href="qslider.html">QSlider</a> *vslider = new <a href="qslider.html">QSlider</a>( 0, 64, 1, 8, Qt::Vertical, cell4 ); <a href="qlcdnumber.html">QLCDNumber</a> *lcd3 = new <a href="qlcdnumber.html">QLCDNumber</a>( 3, cell4 ); lcd3-><a href="qlcdnumber.html#display">display</a>( 8 ); <a href="qobject.html#connect">connect</a>( vslider, SIGNAL( <a href="qslider.html#valueChanged">valueChanged</a>( int ) ), lcd3, SLOT( <a href="qlcdnumber.html#display">display</a>( int ) ) );}</pre><p> <hr><p> Main:<p> <pre>/****************************************************************************** $Id: qt/main.cpp 3.0.5 edited Oct 12 2001 $**** Copyright (C) 1992-2000 Trolltech AS. All rights reserved.**** This file is part of an example program for Qt. This example** program may be used, distributed and modified without limitation.*******************************************************************************/#include "rangecontrols.h"#include <<a href="qapplication-h.html">qapplication.h</a>>int main( int argc, char **argv ){ <a href="qapplication.html">QApplication</a> a( argc, argv ); RangeControls rangecontrols; rangecontrols.<a href="qwidget.html#resize">resize</a>( 500, 300 ); rangecontrols.<a href="qwidget.html#setCaption">setCaption</a>( "Qt Example - Range Control Widgets" ); a.<a href="qapplication.html#setMainWidget">setMainWidget</a>( &rangecontrols ); rangecontrols.<a href="qwidget.html#show">show</a>(); return a.<a href="qapplication.html#exec">exec</a>();}</pre><p>See also <a href="examples.html">Examples</a>.<!-- eof --><p><address><hr><div align=center><table width=100% cellspacing=0 border=0><tr><td>Copyright © 2002 <a href="http://www.trolltech.com">Trolltech</a><td><a href="http://www.trolltech.com/trademarks.html">Trademarks</a><td align=right><div align=right>Qt version 3.0.5</div></table></div></address></body></html>⌨️ 快捷键说明
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