I writed some strings to a configuration file in Qt program, the configuration file named System.cfg.

Before writing, the content of the configuration file looks like this：
Qt Code: 
  1. [Operate]
  2. Key="HallBrushCardGateIn,1514,1,A,T,T;
  3.      HallBrushCardGateIn,1511,1,A,T,T;
  4.      HallBrushCardGateIn,1515,1,A,T,T;
  5.      HallBrushCardGateIn,1509,1,A,T,T;
  6.      HallBrushCardGateIn,1510,1,A,T,T;
  7.      HallBrushCardGateIn,1512,1,A,T,T;
  8.      HallBrushCardSignIn,1514,1,A,T,T;
  9.      HallBrushCardSignIn,1515,1,A,T,T;
  10.      HallBrushCardSignIn,1509,1,1#3,F,T;
  11.      HallBrushCardSignIn,1510,1,0#1#3#4,T,T;
  12.      HallBrushCardSignIn,1512,1,0#1#3#4,T,T;
  13.      IntoExamBrushCard,1514,1,A,T,T;
  14.      IntoExamBrushCard,1515,1,A,T,T;
  15.      IntoExamBrushCard,1511,1,A,T,T;
  16.      IntoExamBrushCard,1512,1,1#3#4,F,T;
  17.     ..............
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After writing, it looks like this:
Qt Code: 
  1. [Operate]
  2. Key="HallBrushCardGateIn,1514,1,A,T,T;\r\n     HallBrushCardGateIn,1511,1,A,T,T;\r\n     HallBrushCardGateIn,1515,1,A,T,T;\r\n     HallBrushCardGateIn,1509,1,A,T,T;\r\n     HallBrushCardGateIn,1510,1,A,T,T;\r\n     HallBrushCardGateIn,1512,1,A,T,T;\r\n     HallBrushCardSignIn,1514,1,A,T,T;\r\n     HallBrushCardSignIn,1515,1,A,T,T;\r\n     HallBrushCardSignIn,1509,1,1#3,F,T;\r\n     HallBrushCardSignIn,1510,1,0#1#3#4,T,T;\r\n     HallBrushCardSignIn,1512,1,0#1#3#4,T,T;\r\n     IntoExamBrushCard,1514,1,A,T,T;\r\n     IntoExamBrushCard,1515,1,A,T,T;\r\n     IntoExamBrushCard,1511,1,A,T,T;\r\n     IntoExamBrushCard,1512,1,1#3#4,F,T;\r\n     CustomerLevelOperate,1514,1,1#3,T,T;\r\n     DepartmentOperateVIP,1511,1,1#2#3#4#7,F,T;\r\n     DepartmentOperateGender,1511,1,1#2#3#4#7,F,T;\r\n     DepartmentOperatePartition,1511,0,1#2#3#4#7,F,T;\r\n     DepartmentOperateStatus,1511,1,1#2#3#4#7,F,T;\r\n     OfficeEnabled,1511,1,1#2#3#4#7,F,F;\r\n     OfficeDisabled,1511,1,1#2#3#4#7,F,F;\r\n     ExamItemOperate,1514,1,A,T,T;\r\n
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The content format was changed.

can i keep original format after writing in Qt program?
Can someone help me?

Thanks!!