Add virtual hook

Sine Striker

2023-12-11 8c403d5dd03418febd67d50c6d9094a61c036f9b

 examples/shared/widgetframe/windowbar_p.h

@@ -43,6 +43,9 @@
        inline void insertDefaultSpace(int index) {
            layout->insertSpacerItem(index, new QSpacerItem(0, 0));
        }

    private:
        Q_DISABLE_COPY_MOVE(WindowBarPrivate)
    };

}