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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 - t9/lcdrange.cpp</title>
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<h1 align=center>Source code for <a href="t9.html">tutorial 9</a>: lcdrange.cpp</h1><br clear="all">
<hr> <pre>/****************************************************************
**
** Implementation of LCDRange class, Qt tutorial 8
**
****************************************************************/

#include "lcdrange.h"

#include &lt;<a href="qslider-h.html">qslider.h</a>&gt;
#include &lt;<a href="qlcdnumber-h.html">qlcdnumber.h</a>&gt;

LCDRange::LCDRange( <a href="qwidget.html">QWidget</a> *parent, const char *name )
        : <a href="qvbox.html">QVBox</a>( parent, name )
{
    <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-&gt;setRange( 0, 99 );
    slider-&gt;setValue( 0 );
    <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="691"></a>LCDRange::value() const
{
    return slider-&gt;value();
}

void <a name="692"></a>LCDRange::setValue( int value )
{
    slider-&gt;setValue( value );
}

void <a name="693"></a>LCDRange::setRange( int minVal, int maxVal )
{
    if ( minVal &lt; 0 || maxVal &gt; 99 || minVal &gt; maxVal ) {
      <a href="qapplication.html#290ef4">qWarning</a>( "<a name="693"></a>LCDRange::setRange(%d,%d)\n"
               "\tRange must be 0..99\n"
               "\tand minVal must not be greater than maxVal",
               minVal, maxVal );
      return;
    }
    slider-&gt;setRange( minVal, maxVal );
}
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