allow qml demo choose special effect

Yuhang Zhao

2023-12-28 68c8cc026233e9694579ce38b8daa25008477d18

 src/widgets/widgetitemdelegate_p.h

@@ -40,6 +40,7 @@
        void setCursorShape(QObject *host, Qt::CursorShape shape) const override;
        void restoreCursorShape(QObject *host) const override;
        void setWindowFlags(QObject *host, Qt::WindowFlags flags) const override;
        void setWindowVisible(QObject *host, bool visible) const override;
        void bringWindowToTop(QObject *host) const override;
    };