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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 - t11/cannon.h</title>
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<h1 align=center>Source code for <a href="t11.html">tutorial 11</a>: cannon.h</h1><br clear="all">
<hr> <pre>/****************************************************************
**
** Definition of CannonField class, Qt tutorial 11
**
****************************************************************/
#ifndef CANNON_H
#define CANNON_H
class QTimer;
#include <<a href="qwidget-h.html">qwidget.h</a>>
class CannonField : public QWidget
{
Q_OBJECT
public:
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();
private slots:
void moveShot();
signals:
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 paintCannon( <a href="qpainter.html">QPainter</a> * );
<a href="qrect.html">QRect</a> cannonRect() const;
<a href="qrect.html">QRect</a> shotRect() const;
int ang;
int f;
int timerCount;
<a href="qtimer.html">QTimer</a> * autoShootTimer;
float shoot_ang;
float shoot_f;
};
#endif // CANNON_H
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