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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 - t8/cannon.cpp</title></head><body bgcolor="#ffffff"><p><table width="100%"><tr><td><a href="index.html"><img width="100" height="100" src="qtlogo.png"alt="Home" border="0"><img width="100"height="100" src="face.png" alt="Home" border="0"></a><td valign="top"><div align="right"><img src="dochead.png" width="472" height="27"><br><a href="classes.html"><b>Classes</b></a>- <a href="annotated.html">Annotated</a>- <a href="hierarchy.html">Tree</a>- <a href="functions.html">Functions</a>- <a href="index.html">Home</a>- <a href="topicals.html"><b>Structure</b>  <font face="Arial,Helvetica,Geneva,Swiss,SunSans-Regular" align="center" size=32>Qte</font></a></div></table><p><h1 align=center>Source code for <a href="t8.html">tutorial 8</a>: cannon.cpp</h1><br clear="all"><hr> <pre>/******************************************************************** Implementation CannonField class, Qt tutorial 8******************************************************************/#include "cannon.h"#include &lt;<a href="qpainter-h.html">qpainter.h</a>&gt;CannonField::CannonField( <a href="qwidget.html">QWidget</a> *parent, const char *name )        : <a href="qwidget.html">QWidget</a>( parent, name ){    ang = 45;    <a href="qwidget.html#d7e4b9">setPalette</a>( <a href="qpalette.html">QPalette</a>( <a href="qcolor.html">QColor</a>( 250, 250, 200) ) );}void <a name="673"></a>CannonField::setAngle( int degrees ){    if ( degrees &lt; 5 )        degrees = 5;    if ( degrees &gt; 70 )        degrees = 70;    if ( ang == degrees )        return;    ang = degrees;    <a href="qwidget.html#7569b1">repaint</a>();    emit angleChanged( ang );}void <a name="674"></a>CannonField::paintEvent( <a href="qpaintevent.html">QPaintEvent</a> * ){    <a href="qstring.html">QString</a> s = "Angle = " + QString::number( ang );    <a href="qpainter.html">QPainter</a> p( this );    p.<a href="qpainter.html#0f088f">drawText</a>( 200, 200, s );}<a href="qsizepolicy.html">QSizePolicy</a> <a name="675"></a>CannonField::sizePolicy() const{    return QSizePolicy( QSizePolicy::Expanding, QSizePolicy::Expanding );}</pre><p><p><address><hr><div align="center"><table width="100%" cellspacing="0" border="0"><tr><td>Copyright

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