QGraphicsView框架实现画板

[{"title":"（ 358 个子文件 1.58MB ） QGraphicsView框架实现画板","children":[{"title":"qdraw.pro <span style='color:#111;'> 71B </span>","children":null,"spread":false},{"title":"index <span style='color:#111;'> 36.72KB </span>","children":null,"spread":false},{"title":"fsmonitor-watchman.sample <span style='color:#111;'> 3.25KB </span>","children":null,"spread":false},{"title":"pre-push.sample <span style='color:#111;'> 1.32KB </span>","children":null,"spread":false},{"title":"prepare-commit-msg.sample <span style='color:#111;'> 1.46KB </span>","children":null,"spread":false},{"title":"......","children":null,"spread":false},{"title":"<span style='color:steelblue;'>文件过多，未全部展示</span>","children":null,"spread":false}],"spread":true}]