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widget.h Example File
opengl/2dpainting/widget.h

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    #ifndef WIDGET_H
    #define WIDGET_H

    #include <QWidget>

    class Helper;
    class QPaintEvent;

    class Widget : public QWidget
    {
        Q_OBJECT

    public:
        Widget(Helper *helper, QWidget *parent);

    public slots:
        void animate();

    protected:
        void paintEvent(QPaintEvent *event);

    private:
        Helper *helper;
        int elapsed;
    };

    #endif


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Qt 4.2.0-tp1