Listbox Scrollbar oddity

Clicking the down arrow on some of my Listbox’s scrollbars don’t work yet I can drag the scroller up or down and the up arrow works.

One of my Windows, for example, has two Listboxes and except for the column count, column width, and initial values, everything else is the same yet one works fine and the other doesn’t (as described above).

Any thoughts on why?

I think (without looking at my code) i had this problem. Are you returning true in your mousedown event?

Mike, there is no MouseDown event used. These are the built in scrollbars of the Listbox.