ticker.h

这个是QT3C++编程书(齐亮翻译)里5,6章的代码

#ifndef TICKER_H
#define TICKER_H

#include <qwidget.h>

class Ticker : public QWidget
{
    Q_OBJECT
    Q_PROPERTY(QString text READ text WRITE setText)

public:
    Ticker(QWidget *parent = 0, const char *name = 0);

    void setText(const QString &newText);
    QString text() const { return myText; }
    QSize sizeHint() const;

protected:
    void paintEvent(QPaintEvent *event);
    void timerEvent(QTimerEvent *event);
    void showEvent(QShowEvent *event);
    void hideEvent(QHideEvent *event);

private:
    QString myText;
    int offset;
    int myTimerId;
};

#endif