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qt3/doc/html/t9-lcdrange-cpp.html

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<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;
<a name="f37"></a>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;<a href="qrangecontrol.html#setRange">setRange</a>( 0, 99 );
slider-&gt;<a href="qslider.html#setValue">setValue</a>( 0 );
<a href="qobject.html#connect">connect</a>( slider, SIGNAL(<a href="qslider.html#valueChanged">valueChanged</a>(int)),
lcd, SLOT(<a href="qlcdnumber.html#display">display</a>(int)) );
<a href="qobject.html#connect">connect</a>( slider, SIGNAL(<a href="qslider.html#valueChanged">valueChanged</a>(int)),
SIGNAL(valueChanged(int)) );
<a href="qwidget.html#setFocusProxy">setFocusProxy</a>( slider );
}
int <a name="f38"></a>LCDRange::value() const
{
return slider-&gt;<a href="qslider.html#value">value</a>();
}
void <a name="f39"></a>LCDRange::setValue( int value )
{
slider-&gt;<a href="qslider.html#setValue">setValue</a>( value );
}
void <a name="f40"></a>LCDRange::setRange( int minVal, int maxVal )
{
if ( minVal &lt; 0 || maxVal &gt; 99 || minVal &gt; maxVal ) {
<a href="qapplication.html#qWarning">qWarning</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;<a href="qrangecontrol.html#setRange">setRange</a>( minVal, maxVal );
}
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