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popupwidget.h Example File
demos/spreadsheet/popupwidget.h

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    #ifndef POPUPWIDGET_H
    #define POPUPWIDGET_H

    #include <QWidget>
    #include <QEventLoop>

    //The class to show a widget as popup.
    class PopupWidget: public QWidget
    {
        Q_OBJECT
    public:
        PopupWidget(QWidget *parent = 0);
        ~PopupWidget();
        void setWidget(QWidget * widget);
        QWidget *widget() const;
        //position of the popup has to be in the screen coordinates.
        int exec(const QRect& rect);

    public slots:
        void closePopup();

    protected:
        void hideEvent(QHideEvent * event);

    private:
        QWidget *childWidget;
        QEventLoop *eventLoop;
        int returnCode;
    };

    #endif


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Qt 4.2.0-snapshot-20060701