Qt无边框、阴影、圆角、可拖动、有最大化最小化关闭按钮美观UI窗口

[{"title":"（ 7 个子文件 11KB ） Qt无边框、阴影、圆角、可拖动、有最大化最小化关闭按钮美观UI窗口","children":[{"title":"test1","children":[{"title":"test1.pro.user.4.8-pre1 <span style='color:#111;'> 18.52KB </span>","children":null,"spread":false},{"title":"test1.pro.user.22 <span style='color:#111;'> 40.66KB </span>","children":null,"spread":false},{"title":"test1.pro <span style='color:#111;'> 992B </span>","children":null,"spread":false},{"title":"test1.pro.user <span style='color:#111;'> 40.66KB </span>","children":null,"spread":false},{"title":"main.cpp <span style='color:#111;'> 190B </span>","children":null,"spread":false},{"title":"widget.cpp <span style='color:#111;'> 3.71KB </span>","children":null,"spread":false},{"title":"widget.h <span style='color:#111;'> 1.23KB </span>","children":null,"spread":false}],"spread":true}],"spread":true}]