Hi Tracy.

What is strange is that when the user moves to the next page by exiting the last control on a page when the next page receives focus, the listbox is at the top of the list as it should be.

That is exactly what I would expect to happen. Default behavior for the page up key in a list box < s >.

CASE nKeyCode = 3 .AND. nShiftAltCtrl = 0 && Page Down

Try adding a NODEFAULT immediately after this statement.