QT+VS实现动态将数据写入到txt文件

[{"title":"（ 44 个子文件 6.91MB ） QT+VS实现动态将数据写入到txt文件","children":[{"title":"DemDataSave","children":[{"title":"DemDataSave.sln.DotSettings.user <span style='color:#111;'> 417B </span>","children":null,"spread":false},{"title":"DemDataSave.sln <span style='color:#111;'> 953B </span>","children":null,"spread":false},{"title":"DemDataSave","children":[{"title":"DemDataSave.qrc <span style='color:#111;'> 71B </span>","children":null,"spread":false},{"title":"DemDataSave.vcxproj <span style='color:#111;'> 5.18KB </span>","children":null,"spread":false},{"title":"DemDataSave.ui <span style='color:#111;'> 2.31KB </span>","children":null,"spread":false},{"title":"testFile.txt <span style='color:#111;'> 45B </span>","children":null,"spread":false},{"title":"Resources","children":null,"spread":false},{"title":"DemDataSave.h <span style='color:#111;'> 359B </span>","children":null,"spread":false},{"title":"DemDataSave.cpp <span style='color:#111;'> 1.08KB 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style='color:#111;'> 102.52KB </span>","children":null,"spread":false},{"title":"qmake","children":[{"title":"qtvars_x64_Debug.props <span style='color:#111;'> 1.64KB </span>","children":null,"spread":false},{"title":"qtvars_5o12ssjt.g3y.designtime.props <span style='color:#111;'> 1.64KB </span>","children":null,"spread":false},{"title":"qtvars_x64_Debug.designtime.idx <span style='color:#111;'> 94B </span>","children":null,"spread":false}],"spread":false},{"title":"DemDataSave.log <span style='color:#111;'> 250B </span>","children":null,"spread":false},{"title":"qrc_DemDataSave.obj <span style='color:#111;'> 6.01KB </span>","children":null,"spread":false}],"spread":false}],"spread":false}],"spread":false},{"title":".vs","children":[{"title":"DemDataSave","children":[{"title":"v14","children":[{"title":".suo <span style='color:#111;'> 66.50KB </span>","children":null,"spread":false}],"spread":true}],"spread":true}],"spread":true},{"title":"DemDataSave.VC.db <span style='color:#111;'> 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