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# cannonfield.h Example File
tutorials/tutorial/t8/cannonfield.h

     /****************************************************************************
     **
     ** Copyright (C) 2005-$THISYEAR$ $TROLLTECH$. All rights reserved.
     **
     ** This file is part of the $MODULE$ of the Qt Toolkit.
     **
     ** $TROLLTECH_DUAL_LICENSE$
     **
     ** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
     ** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
     **
     ****************************************************************************/

     #ifndef CANNONFIELD_H
     #define CANNONFIELD_H

     #include <QWidget>

     class CannonField : public QWidget
     {
         Q_OBJECT

     public:
         CannonField(QWidget *parent = 0);

         int angle() const { return currentAngle; }

     public slots:
         void setAngle(int angle);

     signals:
         void angleChanged(int newAngle);

     protected:
         void paintEvent(QPaintEvent *event);

     private:
         int currentAngle;
     };

     #endif