/******************************************************************** Implementation of LCDRange class, Qt tutorial 8******************************************************************/#include "lcdrange.h"#include <qslider.h>#include <qlcdnumber.h>LCDRange::LCDRange( QWidget *parent, const char *name )        : QVBox( parent, name ){    QLCDNumber *lcd  = new QLCDNumber( 2, this, "lcd"  );    slider = new QSlider( Horizontal, this, "slider" );    slider->setRange( 0, 99 );    slider->setValue( 0 );    connect( slider, SIGNAL(valueChanged(int)),	     lcd, SLOT(display(int)) );    connect( slider, SIGNAL(valueChanged(int)),	     SIGNAL(valueChanged(int)) );    setFocusProxy( slider );}int LCDRange::value() const{    return slider->value();}void LCDRange::setValue( int value ){    slider->setValue( value );}void LCDRange::setRange( int minVal, int maxVal ){    if ( minVal < 0 || maxVal > 99 || minVal > maxVal ) {      qWarning( "LCDRange::setRange(%d,%d)\n"	       "\tRange must be 0..99\n"	       "\tand minVal must not be greater than maxVal",	       minVal, maxVal );      return;    }    slider->setRange( minVal, maxVal );}