C++/Qt/QLCDNumber — различия между версиями
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Версия 14:21, 25 мая 2010
Digital clock
/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the examples of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial Usage
** Licensees holding valid Qt Commercial licenses may use this file in
** accordance with the Qt Commercial License Agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Nokia.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights. These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU General Public License version 3.0 requirements will be
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**
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****************************************************************************/
#ifndef DIGITALCLOCK_H
#define DIGITALCLOCK_H
#include <QLCDNumber>
class DigitalClock : public QLCDNumber
{
Q_OBJECT
public:
DigitalClock(QWidget *parent = 0);
private slots:
void showTime();
};
#endif
#include <QtGui>
#include "digitalclock.h"
DigitalClock::DigitalClock(QWidget *parent)
: QLCDNumber(parent)
{
setSegmentStyle(Filled);
QTimer *timer = new QTimer(this);
connect(timer, SIGNAL(timeout()), this, SLOT(showTime()));
timer->start(1000);
showTime();
setWindowTitle(tr("Digital Clock"));
resize(150, 60);
}
void DigitalClock::showTime()
{
QTime time = QTime::currentTime();
QString text = time.toString("hh:mm");
if ((time.second() % 2) == 0)
text[2] = " ";
display(text);
}
#include <QApplication>
#include "digitalclock.h"
int main(int argc, char *argv[])
{
QApplication app(argc, argv);
DigitalClock clock;
clock.show();
return app.exec();
}