[{"title":"( 102 个子文件 388KB ) 怎样在视图中画标尺,并且实现视图的缩放,并且标尺的刻度也随着变?(就象AutoCAD等画图软件里的用鼠标拖动放大一样)","children":[{"title":"NewGeoEditerDoc.h <span style='color:#111;'> 1.66KB </span>","children":null,"spread":false},{"title":"Split.c <span style='color:#111;'> 4.15KB </span>","children":null,"spread":false},{"title":"NewGeoEditer.ncb <span style='color:#111;'> 217.00KB </span>","children":null,"spread":false},{"title":"aa.doping <span style='color:#111;'> 443B </span>","children":null,"spread":false},{"title":"aa.geo <span style='color:#111;'> 1.52KB </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}]