combobox problem after selection

Hi

I built a custom control 'ChooseBox' that inherits from ComboBox.  When I select an item from a choosebox control, the selected item does not show up; I mean, the background is blue, but the text is hidden.  I have checked my backcolor and forecolor, and don't see anything wrong there.  I know this is probably a simple q.  Can anybody help?

Andy