Get bounding rectangle of a listbox item

[tinytoon_lk]

Hi everyone,

I can add a String or a ListBoxItem into Listbox.
When item of Listbox is a ListBoxItem , I can get ListBoxItem 's rectangle by calling "ListBoxItem.PointToScreen(point)".
But I can not get rectangle of an item if this item is a String .

Any help would be appreciated!