Reading CFbsbitmap Panic KERN-EXEC 3

[dev_Cis]

Hello all,
I am reading bitmap file using a class found on wiki. I am having array of file has to be read, my first image in the array is successfully converts to the bitmap but in next file it is giving error, Please help.

****************************************************
void CImageStore::ConvertToBmpL()
{

delete iBitmap;
iBitmap = NULL;

TRAPD(err,iDecoder=CImageDecoder::FileNewL(iFileSession,iImageFolder)); <-----------(KERN-EXEC 3)
......................
.........
.......
...
..

****************************************************


Thanks.

[vineet.jain]

Are you sure with both objects((iFileSession,iImageFolder) are valid for the second time as well?

[wizard_hu_]

I would add the idea of checking if the given CImageStore object is still valid. If you want to use it for a second time, make sure that it is not deleted after the first use.

[dev_Cis]

Thank you for reply vineet. I checked for the image name with complete path, the folder is same for both images and file name changes in next request. The file session is declared as class variable and is initialized in the constructor like ...

***************************************************
void CImageStore::ConstructL(TDes& aImageFolder,TDes& aImageFolder1)
{
.................
........................
User::LeaveIfError( iFileSession.Connect() );
}
***************************************************

[vineet.jain]

I checked up with a code which i used, the bitmap object is never deleted in that, something like following is done:

if ( iDecoder )
{
delete iDecoder;
iDecoder = NULL;
}

iDecoder = CImageDecoder::FileNewL(iFileSession,iImageFolder);
.
.
.

// release possible previous image
iBitmap->Reset();
iBitmap->Create(bitmap.Size(), EColor16M);

.
.

[dev_Cis]

Thank you wizard for reply. I am calling image store from a for loop like .....

*******************************************
for(----------)
{
CActiveSchedulerWait* lScheduler = new (ELeave) CActiveSchedulerWait;
iImageStore = CImageStore::NewL(FilePath,FilePath,*lScheduler);
iImageStore->ConvertToBmpL();
lScheduler->Start();
IconImage = iImageStore->GetBitmap();
delete lScheduler;
}

[symbianyucca]

I would suggest you to actually implement the loop with Active object, that way your application would be more responsive as well as it would have better chance on actually working.

[dev_Cis]

Thanks Symbianyucca, I have used
CActiveSchedulerWait* lScheduler = new (ELeave) CActiveSchedulerWait;
but after every bitmap call, i delete this and again creates new. Isn't there any problem with it .. ?

[symbianyucca]

My suggestion was not to use it at all, but instead use the API in a "right" way, i.e. make a real active object and implement the "loop" in it. i.e, just do one "loop round" at the time, and check in RunL whether you should be doing more rounds.

[wizard_hu_]

Even if it is not the prettiest possible to way the use this API, having brand new objects (converter, etc.) for each iteration is expected to work in fact.

(Jukka: it is most probably an active object inside, that is why the nested scheduler is used to wrap it. Also the thing goes into a listbox which could not be fully constructed (easily) until the icons are ready.)

There is a nasty thing about TRAP/D: the debugger can not really track what happens inside. Are you absolutely sure about that this line fails? What happens if you unwrap the line from the TRAPD?
Also, an older thread of yours: http://www.developer.nokia.com/Commu...G-listbox-icon - have you seen Devnull's remark? The icon array does not create a copy of your icon, it just stores its pointer. If the delete is still in place (either an explicit one, or if CImageStore happens to delete the bitmap itself), that will result in KERN-EXEC 3 sooner or later.

EDIT: by the way, what is this CImageStore? Can it happen that you could have better results with the simple code from http://www.developer.nokia.com/Commu..._synchronously ?

[dev_Cis]

I am not deleting icons created. I give the default icons on initially and after that i again creates icon array. If i remove TRAP the application does not crashes but all icon visible are default.

[wizard_hu_]

Is that the real code in #6? Besides the ----- of course.
Because in its current form, it does not really store the icons, the last bitmap is going to end up in IconImage, and all the others are just leaked. And the CImageStore objects are leaked too.

[dev_Cis]

What happens if you unwrap the line from the TRAPD?

I get Panic STRINGLOADER 2 error.

[vineet.jain]

http://www.developer.nokia.com/docum...ingLoader.html

explains what does this panic means(if unable to found , it means: EKeyStringNotFound = 2 (The key string wasn't found in formatting.)).Also can you paste here as how you are loading the image path.

[dev_Cis]

Thanks again.

I am appending dynamic image names. At the instance looks like,
_LIT(KFileName, "\\private\\ED208A8F\\photobcbf4c3e4e55d8dfc64a5958914ffebb.jpeg" );