转载 QT QDockWidget嵌套布局详解-实现Visual Studio布局
https://blog.csdn.net/technologyleader/article/details/82218033?utm_medium=distribute.pc_relevant.none-task-blog-2~default~baidujs_title~default-0.pc_relevant_baidujshouduan&spm=1001.2101.3001.4242
不要在该前行的年纪选择安逸