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lcdrange.cpp Example File

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 #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);

     connect(slider, SIGNAL(valueChanged(int)),
             lcd, SLOT(display(int)));
     connect(slider, SIGNAL(valueChanged(int)),
             this, SIGNAL(valueChanged(int)));

     QVBoxLayout *layout = new QVBoxLayout;


 int LCDRange::value() const
     return slider->value();

 void LCDRange::setValue(int 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);
     slider->setRange(minValue, maxValue);

Copyright © 2008 Nokia Trademarks
Qt 4.4.3