Grigore,

It's most likely that you've got thisform.LockScreen set to .t., set it back to .f. and you should be ok.

>Has anyone encountered this: suddenly, the controls on a form dissapear! They are still there (if I click on if, it became visible, but if I click on another one, the first one becames invisible and the selected on becames visible!).
>
>This behaviour doesn't manifests all the time. And the affected forms initially are diplayed correctly.