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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"><!-- /home/reggie/tmp/qt-3.0-reggie-5401/qt-x11-commercial-3.0.5/doc/tutorial.doc:2375 --><html><head><meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"><title>t14/cannon.h Example File</title><style type="text/css"><!--h3.fn,span.fn { margin-left: 1cm; text-indent: -1cm; }a:link { color: #004faf; text-decoration: none }a:visited { color: #672967; text-decoration: none }body { background: #ffffff; color: black; }--></style></head><body><table border="0" cellpadding="0" cellspacing="0" width="100%"><tr bgcolor="#E5E5E5"><td valign=center> <a href="index.html"><font color="#004faf">Home</font></a> | <a href="classes.html"><font color="#004faf">All Classes</font></a> | <a href="mainclasses.html"><font color="#004faf">Main Classes</font></a> | <a href="annotated.html"><font color="#004faf">Annotated</font></a> | <a href="groups.html"><font color="#004faf">Grouped Classes</font></a> | <a href="functions.html"><font color="#004faf">Functions</font></a></td><td align="right" valign="center"><img src="logo32.png" align="right" width="64" height="32" border="0"></td></tr></table><h1 align=center>t14/cannon.h Example File</h1> <pre>/******************************************************************** Definition of CannonField class, Qt tutorial 14******************************************************************/#ifndef CANNON_H#define CANNON_Hclass QTimer;#include <<a href="qwidget-h.html">qwidget.h</a>>class CannonField : public <a href="qwidget.html">QWidget</a>{ 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; } bool gameOver() const { return gameEnded; } bool isShooting() const; <a href="qsize.html">QSize</a> sizeHint() const; <a href="qsizepolicy.html">QSizePolicy</a> sizePolicy() const;public slots: void setAngle( int degrees ); void setForce( int newton ); void shoot(); void newTarget(); void setGameOver(); void restartGame();private slots: void moveShot();signals: void hit(); void missed(); void angleChanged( int ); void forceChanged( int ); void canShoot( bool );protected: void paintEvent( <a href="qpaintevent.html">QPaintEvent</a> * ); void mousePressEvent( <a href="qmouseevent.html">QMouseEvent</a> * ); void mouseMoveEvent( <a href="qmouseevent.html">QMouseEvent</a> * ); void mouseReleaseEvent( <a href="qmouseevent.html">QMouseEvent</a> * );private: void paintShot( <a href="qpainter.html">QPainter</a> * ); void paintTarget( <a href="qpainter.html">QPainter</a> * ); void paintBarrier( <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; <a href="qrect.html">QRect</a> barrierRect() const; bool barrelHit( const <a href="qpoint.html">QPoint</a> & ) 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; bool gameEnded; bool barrelPressed;};#endif // CANNON_H</pre><!-- eof --><p><address><hr><div align=center><table width=100% cellspacing=0 border=0><tr><td>Copyright © 2002 <a href="http://www.trolltech.com">Trolltech</a><td><a href="http://www.trolltech.com/trademarks.html">Trademarks</a><td align=right><div align=right>Qt version 3.0.5</div></table></div></address></body></html>⌨️ 快捷键说明
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