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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"><html><head><meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"><title>Qt Tutorial - t12/lcdrange.cpp</title>
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<h1 align=center>Source code for <a href="t12.html">tutorial 12</a>: lcdrange.cpp</h1><br clear="all">
<hr> <pre>/****************************************************************
**
** Implementation of LCDRange class, Qt tutorial 12
**
****************************************************************/
#include "lcdrange.h"
#include <<a href="qslider-h.html">qslider.h</a>>
#include <<a href="qlcdnumber-h.html">qlcdnumber.h</a>>
#include <<a href="qlabel-h.html">qlabel.h</a>>
LCDRange::LCDRange( <a href="qwidget.html">QWidget</a> *parent, const char *name )
: <a href="qvbox.html">QVBox</a>( parent, name )
{
<a href=#532>init</a>();
}
LCDRange::LCDRange( const char *s, QWidget *parent,
const char *name )
: <a href="qvbox.html">QVBox</a>( parent, name )
{
<a href=#532>init</a>();
<a href=#537>setText</a>( s );
}
void <a name="532"></a>LCDRange::init()
{
<a href="qlcdnumber.html">QLCDNumber</a> *lcd = new <a href="qlcdnumber.html">QLCDNumber</a>( 2, this, "lcd" );
slider = new <a href="qslider.html">QSlider</a>( Horizontal, this, "slider" );
slider->setRange( 0, 99 );
slider->setValue( 0 );
label = new <a href="qlabel.html">QLabel</a>( " ", this, "label" );
label->setAlignment( AlignCenter );
<a href="qobject.html#7f8e37">connect</a>( slider, SIGNAL(valueChanged(int)),
lcd, SLOT(display(int)) );
<a href="qobject.html#7f8e37">connect</a>( slider, SIGNAL(valueChanged(int)),
SIGNAL(valueChanged(int)) );
<a href="qwidget.html#cddadb">setFocusProxy</a>( slider );
}
int <a name="533"></a>LCDRange::value() const
{
return slider->value();
}
const char *<a name="534"></a>LCDRange::text() const
{
return label->text();
}
void <a name="535"></a>LCDRange::setValue( int value )
{
slider->setValue( value );
}
void <a name="536"></a>LCDRange::setRange( int minVal, int maxVal )
{
if ( minVal < 0 || maxVal > 99 || minVal > maxVal ) {
<a href="qapplication.html#290ef4">qWarning</a>( "<a name="536"></a>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 );
}
void <a name="537"></a>LCDRange::setText( const char *s )
{
label->setText( s );
}
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