Help for displaying Application Icons in uiq3

I am trying to display the Names and Icons of all the applications in UIQ3.
I have got the names and displayed it into list box but not finding a way to disply the Icons into the ListBox. Here is my code but it is making Panic at runtime as it goes to Pop the first element aMaskBmp
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CApaMaskedBitmap* aAppBitmap = CApaMaskedBitmap::NewLC();
TInt aErr = aSession.GetAppIcon(aAppInfo.iUid,1,*aAppBitmap);
CFbsBitmap* aMaskbmp = new(ELeave) CFbsBitmap();
CleanupStack::PushL(aMaskbmp);
aMaskbmp = aAppBitmap->Mask();
CGulIcon* aGulIcon = CGulIcon::NewLC();
aGulIcon = CEikonEnv::CreateIconFromMaskedBitmapL(*aAppBitmap);
CFbsBitmap* aIconBmp = new(ELeave) CFbsBitmap();
CleanupStack::PushL(aIconBmp);
aIconBmp = aGulIcon->Bitmap();
CQikContent* aContent = new(ELeave) CQikContent();
CleanupStack::PushL(aContent);
aContent->SetBitmap(aIconBmp);
aContent->SetMask(aMaskbmp);
aTaskListBoxData->AddIconL(aContent,EQikListBoxSlotLeftSmallIcon1);
CleanupStack::Pop(aMaskbmp);
CleanupStack::Pop(aIconBmp);
CleanupStack::Pop(aContent);