On S60v5, I used view-container-ListBox(subclass of CAknSingleGraphicStyleListBox)+CEikGlobalTextEditor. This listbox is a multiple selection one.
I called CAknSingleGraphicStyleListBox::SetListBoxObserver in Container::ConstructL. When user selects/unselects one item of listbox, system will call HandleListBoxEventL(EEventItemClicked), and call OfferKeyEventL(aKeyEvent.iCode==EKeyDevice3) which is not my expected.

Please help me to figure out why this unexpected OfferKeyEventL happened and how I change code.