C++/Qt/QLCDNumber — различия между версиями
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Текущая версия на 13:24, 25 мая 2010
Digital clock
<source lang="cpp"> /****************************************************************************
- 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
- met: http://www.gnu.org/copyleft/gpl.html.
- If you have questions regarding the use of this file, please contact
- Nokia at qt-info@nokia.com.
- $QT_END_LICENSE$
-
- /
- 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();
}
</source>