[{"title":"( 2 个子文件 2KB ) qt5下自定义QGraphicsItem在场景中拖动吸附算法","children":[{"title":"attach","children":[{"title":"designAttach.h <span style='color:#111;'> 1000B </span>","children":null,"spread":false},{"title":"designAttach.cpp <span style='color:#111;'> 5.36KB </span>","children":null,"spread":false}],"spread":true}],"spread":true}]