>Hi Cristi,
>Is your form class based (VCX) or SCX?

Well, the form was saved in a class... Anyway, I solved the problem.
The problem was in the property "Desktop", even if in help the explanation was as folowing:

"Remarks: The Desktop property is ignored if the ShowWindow property is set to 2 – As Top-Level form.
You should not use the Desktop property when you create Single Document Interface (SDI) applications in which you might want to hide the Visual FoxPro desktop window (_SCREEN). Instead, use the ShowWindow property setting of 2 to create a top-level form."

That explanation is not true. The property "Desktop" is not ignored if the form is saved as class with "ShowWindow=2"!!!!
I was forced to change the property as "Desktop=.t.".

I find the solution at least interesting and unattempted, because a normal form work well, but if you save the form as class you need to change the property "desktop" against the explanations in help.

Thanks for the reply
Cristi Faur