I need to implement tooltip for combo box. Idea is that when combobox dropdown list is shown in which products are shown then I need to show tool tip (description information) for hovered product item.

I have tried to do that using not custom combo box (also tried to set style LVM_GETEXTENDEDLISTVIEWSTYLE), but I was unable to catch notify messages (NM_HOVER, LVN_HOTTRACK) of drop list.

Does it mean that I must use custom combobox?
Maybe someone has experience or understand how should it be done?