add quick border

Zhao Yuhang

2023-12-11 2f6c83c095724bbba0f43b2f2893ba73c17949a6

 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)
    };

}