/**************************************************************** ** ** Implementation of LCDRange class, Qt tutorial 8 ** ****************************************************************/ #include "lcdrange.h" #include #include 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 ); }