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The write stream interface. The process of externalising to a stream is achieved through a reference to an object of this type.

A store aware class defines and implements an ExternalizeL() member function which is used to externalise that object and takes a reference to an RWriteStream as the interface to the write stream

Creating an RFileWriteStream

RFileWriteStream writeStream;
 
User::LeaveIfError(writeStream.Create(fs, KTxtTestFileName,EFileWrite));
 
//Push the stream onto the Cleanup Stack before calling any leaving functions.//
 
writeStream.PushL();