The OnMoveItem event was introduced in VFP8. In VFP7 you can try to use ProgrammaticChange event which fires in this case.

>Sounds good but,
>I dont have a OnMoveItem method...?
>Intellesense does not show it...
>I am using vfp 7.
>
>I populate the Listbox in a for loop
>using AddItem. RowSourceType =1 (value)