Материал из C\C++ эксперт
Digital clock
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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();
}
