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| 31 | </td>
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| 32 | <td align="right" valign="center"><img src="logo32.png" align="right" width="64" height="32" border="0"></td></tr></table><h1 align=center>t11/lcdrange.cpp Example File</h1>
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| 33 |
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| 34 |
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| 35 | <pre>/****************************************************************
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| 36 | **
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| 37 | ** Implementation of LCDRange class, Qt tutorial 8
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| 38 | **
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| 39 | ****************************************************************/
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| 40 |
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| 41 | #include "lcdrange.h"
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| 42 |
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| 43 | #include <<a href="qslider-h.html">qslider.h</a>>
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| 44 | #include <<a href="qlcdnumber-h.html">qlcdnumber.h</a>>
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| 45 |
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| 46 | <a name="f53"></a>LCDRange::LCDRange( <a href="qwidget.html">QWidget</a> *parent, const char *name )
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| 47 | : <a href="qvbox.html">QVBox</a>( parent, name )
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| 48 | {
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| 49 | <a href="qlcdnumber.html">QLCDNumber</a> *lcd = new <a href="qlcdnumber.html">QLCDNumber</a>( 2, this, "lcd" );
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| 50 | slider = new <a href="qslider.html">QSlider</a>( Horizontal, this, "slider" );
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| 51 | slider-><a href="qrangecontrol.html#setRange">setRange</a>( 0, 99 );
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| 52 | slider-><a href="qslider.html#setValue">setValue</a>( 0 );
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| 53 | <a href="qobject.html#connect">connect</a>( slider, SIGNAL(<a href="qslider.html#valueChanged">valueChanged</a>(int)),
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| 54 | lcd, SLOT(<a href="qlcdnumber.html#display">display</a>(int)) );
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| 55 | <a href="qobject.html#connect">connect</a>( slider, SIGNAL(<a href="qslider.html#valueChanged">valueChanged</a>(int)),
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| 56 | SIGNAL(valueChanged(int)) );
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| 57 |
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| 58 | <a href="qwidget.html#setFocusProxy">setFocusProxy</a>( slider );
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| 59 | }
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| 60 |
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| 61 | int <a name="f54"></a>LCDRange::value() const
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| 62 | {
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| 63 | return slider-><a href="qslider.html#value">value</a>();
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| 64 | }
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| 65 |
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| 66 | void <a name="f55"></a>LCDRange::setValue( int value )
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| 67 | {
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| 68 | slider-><a href="qslider.html#setValue">setValue</a>( value );
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| 69 | }
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| 70 |
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| 71 | void <a name="f56"></a>LCDRange::setRange( int minVal, int maxVal )
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| 72 | {
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| 73 | if ( minVal < 0 || maxVal > 99 || minVal > maxVal ) {
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| 74 | <a href="qapplication.html#qWarning">qWarning</a>( "LCDRange::setRange(%d,%d)\n"
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| 75 | "\tRange must be 0..99\n"
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| 76 | "\tand minVal must not be greater than maxVal",
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| 77 | minVal, maxVal );
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| 78 | return;
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| 79 | }
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| 80 | slider-><a href="qrangecontrol.html#setRange">setRange</a>( minVal, maxVal );
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| 81 | }
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| 82 | </pre><!-- eof -->
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| 83 | <p><address><hr><div align=center>
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| 84 | <table width=100% cellspacing=0 border=0><tr>
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| 85 | <td>Copyright © 2007
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| 86 | <a href="troll.html">Trolltech</a><td align=center><a href="trademarks.html">Trademarks</a>
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| 87 | <td align=right><div align=right>Qt 3.3.8</div>
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| 88 | </table></div></address></body>
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| 89 | </html>
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