演示 RectangularShadow 用法。
此範例演示 RectangularShadow type, which offers an efficient solution for applying rounded rectangle shadows and glows. The API of the RectangularShadow matches to CSS box-shadow element, with some additions.
要運行範例從 Qt Creator ，打開 歡迎 模式，然後選擇範例從 範例 。更多信息，見 Qt Creator：教程：構建並運行 .
