NewLC - Forum topic - Comments

Re: saving text to file

vineet.jain — Sat, 05 Jul 2008 15:33:04 +0200

i have already seen dat, actually the code which im applying in container is:
the compiler is not able to identify aVar,.so if u can help
TBuf8<200>aVar;
iEditor->aVar.GetText(aVar);
RFile File;
RFs iFs;
iFs.Connect();
File.Replace(iFs,_L("\C\\Data\\Others\\File.txt"),EFileWrite);
File.Write(aVar);
File.Close();
iFs.Close();

Re: saving text to file

N_A — Sat, 05 Jul 2008 15:15:40 +0200

http://wiki.forum.nokia.com/index.php/Reading_and_writing_files

Re: passing arguments in asyncronous server

mearunsingh — Fri, 04 Jul 2008 16:21:32 +0200

thanks for the reply ...
the code is working properly on the device ....above code is fine ..due to some binary mismatch things were not working in the e50.

Re: passing arguments in asyncronous server

alh — Fri, 04 Jul 2008 16:10:32 +0200

IPC can be tricky when you want to send lots of data over...

What is the length returned from GetDesMaxLength?

If its a negative value (most commonly -38, KErrBadDescriptor) then the problem is probably in how you send the descriptor

If its positive, maybe you have some OOM-problems on target, if the heap in your server is too small?

I also notice you don't delete your desData afterwards, maybe you have a leak here?

Overall, to me, it looks like your code should work though... It working on emu but not on target makes it feel a bit like OOM.

Only one weirdness, shouldn't the RBuf be a RBuf8?

Two notes though:
- the TIpcArgs itself, can live on stack, it is copied by the kernel when sending the message. Problem is with pointers stored in it.
- You can probably rewrite this to save one rather big copy on this line:

iData.Copy( iCryptoData->MarshalDataL( aFolderList ) );

Easiest way to do that would probably be to simply rewrite your MarshalDataL to take a RBuf reference, and fill it up directly, instead of going through a HBufC.

Re: changing colour of text

rbrunner — Fri, 04 Jul 2008 14:33:51 +0200

http://www.newlc.com/Playing-with-CEikEdwin.html

Re: tabs

Symbian_Neil — Fri, 04 Jul 2008 13:42:29 +0200

nice

Re: text editor

sumit.rathi — Fri, 04 Jul 2008 13:26:23 +0200

thank you Rene....or guiding me ..i debugged n found where it crashes....ur advice was valuable.. ...now my app is running successfully...

take care

Re: plain text editor

rbrunner — Fri, 04 Jul 2008 13:14:40 +0200

Don't know...

It's perfectly normal for the debugger to skip the line with the TResourceReader declaration because no code is executed at that line. This does not mean something is wrong.

I am not sure, but maybe it is worth a try to do an ActivateL() for the EdWin as well.

In your .rss file, do you give a proper length and good coordinates for your EdWin?

Re: passing arguments in asyncronous server

mearunsingh — Fri, 04 Jul 2008 12:48:21 +0200

in emulator things are working properly but in device data is not passed from client to server.
i am marshalling the data(RArray list of TFileName) in the client side and un-marshalling the data on the server side.

client side:
aFolderList is RArray
RBuf iData;

Clinet( aFolderList )
{
iData.Create(100);
iFolderCount = aFolderList.Count();
iData.Copy( iCryptoData->MarshalDataL( aFolderList ) );
iArgs.Set( 0,&iData );
iArgs.Set( 1, iFolderCount);

SendReceive( ESetFolderList, iArgs, iStatus );
}

server side:

in session(const RMessage2& aMessage)
{
TInt clientDesMaxLen;
clientDesMaxLen = aMessage.GetDesMaxLength(0);
HBufC8* desData = HBufC8::NewLC(clientDesMaxLen);// in device it fails here means len is not proper
TPtr8 readPtr(desData->Des());
aMessage.ReadL(0, readPtr);
TInt folderCount = aMessage.Int1();
RArray folderList;
iData = CCryptoData::NewL();
iData->UnMardhalDataL(*desData, folderList, folderCount);
}

above code is working fine in emulator but in device in server side it fails.
so can u please tell me how to pass the data(folder list) in different processes (i.e client server)

Re: Memory Leak in RDbView::Prepare API

alh — Fri, 04 Jul 2008 10:05:36 +0200

I'm not really sure what you mean?

If you put __UHEAP_MARK directly before that piece of code, and then MARKEND directly after, you should get an ALLOC panic...
That's because either Prepare or EvaluateAll (or both) allocate memory, and it will not be freed until you "Close" the view.

I'm also not sure what you are trying to "look for"?
If you have a memory leak in your app, you will get an ALLOC panic on exit, if you don't get that, you don't have a leak.
If you do get ALLOC panic on exit, the easiest way to track it down is not to move around MARK/MARKEND in your code, the easiest way is to use HookLogger from symbian:
http://developer.symbian.com/main/tools_and_sdks/developer_tools/supported/hook_logger/index.jsp

It (among other things) tracks all allocations and deallocations, and you can at any point list them all, including the callstack that generated the allocation.
If you look in the list whilst the "ALLOC" panic dialog is showing, you will get a nice list of all your leaks, and you can fix them all at the same time.

Re: text editor

rbrunner — Fri, 04 Jul 2008 09:44:40 +0200

Well, just debug the thing and see where the exception occurs. Without knowing that you won't get further. And if you do not yet know how to debug, then *now* is the time to learn it, because knowing how to debug with the help of the emulator is, if you ask me, an absolute must for programming on Symbian.

Don't leave home without your debugger

Re: text editor

sumit.rathi — Fri, 04 Jul 2008 09:32:00 +0200

thanx a lot rbrunner.....i have included it n it compiled successfully....but when i running it on emulator app is not opening a error code is coming
KERN-EXEC 3........plzz tell me something abt this

Re: text editor

sumit.rathi — Fri, 04 Jul 2008 09:22:10 +0200

which .rsg file i should inlude n where plzz tell me

Re: text editor

rbrunner — Fri, 04 Jul 2008 09:08:03 +0200

You have to #include the .rsg file for the constants from the .rss to become known in your code.

Re: Bluetooth Virtual Serial Port for 7610 --need help

jmulxg — Fri, 04 Jul 2008 08:20:16 +0200

I also need it . Thanks a lot ,Corben.
My e-mail is .