Symbian 用流操作文件

一、自定义的类

代码

//打开流式文件
TFileName fnDataFile;
fnDataFile.Copy(_L("c:\\StreamExam.dat"));

RFs& fs=CCoeEnv::Static()->FsSession();

RFileReadStream fileReadStream;
User::LeaveIfError(fileReadStream.Open(fs,fnDataFile,EFileRead));
fileReadStream.PushL();

//从文件中内部化数据
TInt32 nID;
TBuf16<20> bufName;

fileReadStream >> nID;
fileReadStream >> bufName;

RDebug::Print(_L("start\n"));
RDebug::Print(_L("ID=%d Name=%S\n"),nID,&bufName);

//内部化自定义类
TUserGroup userGroup;
fileReadStream >> userGroup;
RDebug::Print(_L("GroupID=%d GroupName=%S\n"),userGroup.m_nGroupID,&(userGroup.m_bufGroupName));

//释放资源
fileReadStream.Pop();
fileReadStream.Release();
RDebug::Print(_L("end\n"));