extending CAknDoubleStyleListBox

[kamosoft]

Hi :), I have problems derriving CAknDoubleStyleListBox
in debug mode I get User 42 error when close the view that contains the listbox, in release it works fine (not exactly ... but works)
Please help :)
this is a piece of my code
////h file
class CSongsDrawer : public CColumnListBoxItemDrawer
{
public:
~CSongsDrawer();
CSongsDrawer(MTextListBoxModel* aTextListBoxModel);
protected :
virtual void DrawActualItem(TInt aItemIndex, const TRect& aActualItemRect, TBool aItemIsCurrent, TBool aViewIsEmphasized, TBool aViewIsDimmed,TBool aItemIsSelected) const;
};

class CSongsListBox : public CAknDoubleStyleListBox
{
public:
virtual void CreateItemDrawerL();
};
//cpp file
CSongsDrawer::CSongsDrawer(MTextListBoxModel* aTextListBoxModel):
CColumnListBoxItemDrawer(aTextListBoxModel, LatinPlain12(), CColumnListBoxData::NewL())
{}

void CSongsListBox::CreateItemDrawerL()
{
// CAknDoubleStyleListBox::CreateItemDrawerL();
// delete iItemDrawer;
iItemDrawer = new CSongsDrawer(Model(), this);
}

[kamosoft]

Instead of derriving from CAknDoubleStyleListBox, I now use CEikTextListBox, CTextListItemDrawer and CListBoxView (virtual TPoint ItemPos(TInt aItemIndex) const), my listbox looks almost exactly like a doublelistbox and everything works seamless :))