Write to file....

[VinodRaut]

Dear All,

I want to write my structure into a file. But RWriteStream doesnt contain any function to write a struct or void pointer other that some text realted function. So can anybody plz tell me how to achive the task?

Thanx & Regards,
Vinod.

[peter_k_john]

Dear All,

I want to write my structure into a file. But RWriteStream doesnt contain any function to write a struct or void pointer other that some text realted function. So can anybody plz tell me how to achive the task?

Thanx & Regards,
Vinod.

As i understand, you are trying to write the vaues of variables in a structure to a file. AFAIK To do this task there is no easy ways other than write all the member name and its content respectively to the file as a step by step process. Correct me if i am wrong.

Peter

[VinodRaut]

Dear Peter...

Yes i want to write a structure containing some different variables. Like we do in C --- write(iFileHandle, &strcut, sizeof(struct)); so can we do such in series60 or symbian?

Thanx & Regards,
Vinod.

[kkrish]

Dear Peter...

Yes i want to write a structure containing some different variables. Like we do in C --- write(iFileHandle, &strcut, sizeof(struct)); so can we do such in series60 or symbian?

Thanx & Regards,
Vinod.

you can do it like
RFs fs;
User::LeaveIfError(fs.Connect());
CleanupClosePushL(fs);

RFileWriteStream writer;
writer.PushL();
User::LeaveIfError(writer.Replace(fs,KC3SettingsFilename,EFileWrite));

TBuf<20> aa;
aa.Copy(_L("hi how r u"));
writer << aImsi;

writer.CommitL();
writer.Pop();
writer.Release();

CleanupStack::PopAndDestroy();

hope this will help you

[peter_k_john]

Dear Peter...

Yes i want to write a structure containing some different variables. Like we do in C --- write(iFileHandle, &strcut, sizeof(struct)); so can we do such in series60 or symbian?

Thanx & Regards,
Vinod.

Ckeck the various Write methods available in RWriteStream. You can't a struct as a whole . you have done it in steps as writing each data one by one.

Hope you understand me.

Peter

[VinodRaut]

Dear Jitendra...

Thanx for the reply...
so can i code like following?
strcut strSample
{
TInt iVal1;
TInt iVal2;
TDesC<20> szVal3;
};

RFileWriteStream writer;
strSample obj;
// fill obj...
writer << obj;
....

Is this possible?

Thanx & Regrads,
Vinod

[kkrish]

i am not sure you can try it and please let me know, otherwise you can write every element individually.

[VinodRaut]

Dear Peter & Jitenrda..

Thank you so much...

I will try & let you know...

Thanx & Regards,
Vinod.

[Paul.Todd]

You can try wrapping it in a TPckgC.

struct TMyStruct
{
TInt x;
TIny y;
TBuf<32> data;
};

TMyStruct myStructVariable;
// set variable fields here....

const TPckgC<TMyStruct> pkg(myStructVariable);
aFile.Write(pkg);

[VinodRaut]

Dear Paul...
thamk you very much...

Code given by u work wonder...
while reading back the structure we have to use..

RFileReadStream reader(rFile);
TMyStruct myStructVariable;
TPckg<TMyStruct> pkg(myStructVariable);
reader.ReadL(pkg);

Thanx & regards,
Vinod.