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worldtimeclock.h Example File
^{designer/worldtimeclockplugin/worldtimeclock.h}

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    #ifndef WORLDTIMECLOCK_H
    #define WORLDTIMECLOCK_H

    #include <QTime>
    #include <QWidget>
    #include <QtDesigner/QDesignerExportWidget>

    class QDESIGNER_WIDGET_EXPORT WorldTimeClock : public QWidget
    {
        Q_OBJECT

    public:
        WorldTimeClock(QWidget *parent = 0);

    public slots:
        void setTimeZone(int hourOffset);

    signals:
        void updated(QTime currentTime);

    protected:
        void paintEvent(QPaintEvent *event);

    private:
        int timeZoneOffset;
    };

    #endif