~oif-team/ubuntu/natty/qt4-x11/xi2.1

<td width="1">  </td><td class="postheader" 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="top" width="230"><img src="images/trolltech-logo.png" align="right" width="203" height="32" border="0" /></td></tr></table><h1 align="center">lcdrange.cpp Example File<br /><small><small>tutorial/t10/lcdrange.cpp</small></small></h1>

<pre>  /****************************************************************************

** This file is part of the documentation of the Qt 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.

** 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.

** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE

** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.

****************************************************************************/

/****************************************************************

** Implementation of LCDRange class, Qt tutorial 10

****************************************************************/

#include <QLCDNumber>

#include <QSlider>

#include <QVBoxLayout>

#include "lcdrange.h"

LCDRange::LCDRange(QWidget *parent)

: QWidget(parent)

{

QLCDNumber *lcd = new QLCDNumber(2);

slider = new QSlider(Qt::Horizontal);

slider->setRange(0, 99);

slider->setValue(0);

connect(slider, SIGNAL(valueChanged(int)),

lcd, SLOT(display(int)));

connect(slider, SIGNAL(valueChanged(int)),

this, SIGNAL(valueChanged(int)));

QVBoxLayout *layout = new QVBoxLayout;

layout->addWidget(lcd);

layout->addWidget(slider);

setLayout(layout);

setFocusProxy(slider);

}

int LCDRange::value() const

{

return slider->value();

}

void LCDRange::setValue(int value)

{

slider->setValue(value);

}

void LCDRange::setRange(int minValue, int maxValue)

{

if (minValue < 0 || maxValue > 99 || minValue > maxValue) {

qWarning("LCDRange::setRange(%d, %d)\n"

"\tRange must be 0..99\n"

"\tand minValue must not be greater than maxValue",

minValue, maxValue);

return;

}

100

slider->setRange(minValue, maxValue);

101

}</pre>

102

103

104

105

<td width="40%" align="center"><a href="trademarks.html">Trademarks</a></td>

106

107

</tr></table></div></address></body>

108

</html>

Older »