>Hi All,
>
>When changing a Listbox's selected item, I want to be able to lock the screen and do some stuff before any visual indication that the selected item has been changed. It's no problem to do this when the Action invokes the Keypress event -- I just set Thisform.LockScreen=.T. there and reset it to .F. at the end of InteractiveChange. However, checking dog-eared page 130 of my Megafox book, Keypress is not in the event sequence when selecting a list item with the mouse, and setting LockScreen=.T. at the top of InteractiveChange is too late. Is there a workaround for this?
>
>TIA,
>-mark

Did you try click or when event of ListBox?