>*snip*
>>Don't think so. Drop a treeview on a form. The treeview is a child window. However, it does not respect LockScreen = .T. The only way to specifically lock the update is to call LockWindowUpdate() with the window handle of the treeview itself.
>>
>
>From a few tests, it appears that VFP does not issue a LockWindowUpdate at all and that is why the child window doesn't respect it. I set LockScreen = .T. on a form. I then used Foxtools.Fll to get a window handle on that form. I issued LockWindowUpdate myself manually and was able to do it.
>
>It also explains why you can have individual LockScreen properties on each form and they work. If it did issue a LockWindowUpdate, you couldn't do that.
My bad, an assumption on my part that LockWindowUpdate() would be used. Thanks for the information, though, Larry. Appreciated.
George
Ubi caritas et amor, deus ibi est