QT画矩形Graphics， Scene，Item逻辑关系使用

[{"title":"（ 49 个子文件 16.03MB ） QT画矩形Graphics， Scene，Item逻辑关系使用","children":[{"title":"QGraphicsView","children":[{"title":"QTGraphicsView2018","children":[{"title":"QTGraphicsView2018","children":[{"title":"QTGraphicsView2018.vcxproj <span style='color:#111;'> 30.28KB </span>","children":null,"spread":false},{"title":"Resources","children":null,"spread":false},{"title":"qtgraphicsview2018.qrc <span style='color:#111;'> 78B </span>","children":null,"spread":false},{"title":"DrawItem.h <span style='color:#111;'> 2.89KB </span>","children":null,"spread":false},{"title":"ImageScene.cpp <span style='color:#111;'> 2.54KB </span>","children":null,"spread":false},{"title":"QTGraphicsView2018.vcxproj.filters <span style='color:#111;'> 4.04KB </span>","children":null,"spread":false},{"title":"qtgraphicsview2018.cpp <span style='color:#111;'> 758B </span>","children":null,"spread":false},{"title":"qtgraphicsview2018.h <span style='color:#111;'> 426B 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