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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/cannon.h</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="t12.html">tutorial 12</a>: cannon.h</h1><br clear="all"><hr> <pre>/******************************************************************** Definition of CannonField class, Qt tutorial 12******************************************************************/#ifndef CANNON_H#define CANNON_Hclass QTimer;#include &lt;<a href="qwidget-h.html">qwidget.h</a>&gt;class CannonField : public QWidget{    Q_OBJECTpublic:    CannonField( <a href="qwidget.html">QWidget</a> *parent=0, const char *name=0 );    int   angle() const { return ang; }    int   force() const { return f; }    <a href="qsizepolicy.html">QSizePolicy</a> sizePolicy() const;public slots:    void  setAngle( int degrees );    void  setForce( int newton );    void  shoot();    void  newTarget();private slots:    void  moveShot();signals:    void  hit();    void  missed();    void  angleChanged( int );    void  forceChanged( int );protected:    void  paintEvent( <a href="qpaintevent.html">QPaintEvent</a> * );private:    void  paintShot( <a href="qpainter.html">QPainter</a> * );    void  paintTarget( <a href="qpainter.html">QPainter</a> * );    void  paintCannon( <a href="qpainter.html">QPainter</a> * );    <a href="qrect.html">QRect</a> cannonRect() const;    <a href="qrect.html">QRect</a> shotRect() const;    <a href="qrect.html">QRect</a> targetRect() const;    int ang;    int f;    int timerCount;    <a href="qtimer.html">QTimer</a> * autoShootTimer;    float shoot_ang;    float shoot_f;    <a href="qpoint.html">QPoint</a> target;};#endif // CANNON_H</pre><p><p><address><hr><div align="center"><table width="100%" cellspacing="0" border="0"><tr><td>Copyright

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