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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<!-- /home/espenr/tmp/qt-3.3.8-espenr-2499/qt-x11-free-3.3.8/examples/rangecontrols/rangecontrols.doc:4 -->
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<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>Range controls</title>
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<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 that
are supported by Qt: dials, spin boxes and sliders.
<p> <hr>
<p> Header file:
<p> <pre>/****************************************************************************
** $Id: qt/rangecontrols.h   3.3.8   edited Jan 11 14:37 $
**
** Copyright (C) 1992-2007 Trolltech ASA.  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 &lt;<a href="qvbox-h.html">qvbox.h</a>&gt;

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   3.3.8   edited Jan 11 14:37 $
**
** Copyright (C) 1992-2007 Trolltech ASA.  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 &lt;<a href="qhbox-h.html">qhbox.h</a>&gt;
#include &lt;<a href="qlcdnumber-h.html">qlcdnumber.h</a>&gt;
#include &lt;<a href="qspinbox-h.html">qspinbox.h</a>&gt;
#include &lt;<a href="qlabel-h.html">qlabel.h</a>&gt;
#include &lt;<a href="qstring-h.html">qstring.h</a>&gt;
#include &lt;<a href="qslider-h.html">qslider.h</a>&gt;
#include &lt;<a href="qcheckbox-h.html">qcheckbox.h</a>&gt;

#include &lt;limits.h&gt;

<a name="f436"></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="x1382"></a>    cell2-&gt;<a href="qframe.html#setMargin">setMargin</a>( 10 );
<a name="x1381"></a>    cell2-&gt;<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="x1391"></a><a name="x1383"></a>    label1-&gt;<a href="qwidget.html#setMaximumHeight">setMaximumHeight</a>( label1-&gt;<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="x1390"></a>    sb1-&gt;<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-&gt;<a href="qwidget.html#setMaximumHeight">setMaximumHeight</a>( label2-&gt;<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="x1389"></a>    sb2-&gt;<a href="qspinbox.html#setSuffix">setSuffix</a>( " %" );
<a name="x1388"></a>    sb2-&gt;<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-&gt;<a href="qwidget.html#setMaximumHeight">setMaximumHeight</a>( label3-&gt;<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="x1387"></a>    sb3-&gt;<a href="qspinbox.html#setPrefix">setPrefix</a>( "$" );
    sb3-&gt;<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-&gt;<a href="qframe.html#setMargin">setMargin</a>( 10 );
    cell3-&gt;<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, "horizontal_s" );
    <a href="qlcdnumber.html">QLCDNumber</a> *lcd2 = new <a href="qlcdnumber.html">QLCDNumber</a>( 2, cell3 );
<a name="x1384"></a>    lcd2-&gt;<a href="qlcdnumber.html#display">display</a>( 33 );
<a name="x1385"></a>    lcd2-&gt;<a href="qlcdnumber.html#setSegmentStyle">setSegmentStyle</a>( QLCDNumber::Filled );
<a name="x1386"></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-&gt;<a href="qframe.html#setFrameStyle">setFrameStyle</a>( QFrame::WinPanel | QFrame::Sunken );
    cell4-&gt;<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-&gt;<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   3.3.8   edited Jan 11 14:37 $
**
** Copyright (C) 1992-2007 Trolltech ASA.  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 &lt;<a href="qapplication-h.html">qapplication.h</a>&gt;

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>( &amp;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>.

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