Hi!

Try following:

DECLARE INTEGER LockWindowUpdate in Win32API INTEGER

LockWindowUpdate(thisform.Tree.hwnd)

... add items to tree view here

LockWindowUpdate(0)

LockWindowUpdate(thisform.ListView.hwnd)

... add items to list view here

LockWindowUpdate(0)

>Hi,
> I am using treeview and listview as my user security maintenance. I have prloblem that, the screen doesn'rt refresh smoothly while I re-create the items of listview and add/remove node in treeview. I used to try FORM.LOCKSCREEN= .T. before recreate items and FORM.LOCKSCREEN = .F. after it. However it doesn't work
>
>How to make it work smoothly?
>
>Thank you