Just to add to what Mike said... the best practice is to place code in your DragOver event that determines if it is acceptable to allow a drop.

>Hi
>I have a form with 30 listbox's on it, I have enabled drag and drop, and all works fine. I would like to prevent some items in a listbox from being moved if an Items data does not have the flag for doing so. Where would the best place to prevent the item from being moved?
>
>in the mousedown, startdrag or is there another way
>
>TIA