>Yes there should be some code changing it. An assert might help.
>Cetin

Where should I put assert?

I forgot an important bit of information: the form is set with AutoCenter = .t.

Here are results (first with resolution 1152x 864 in 32 bit:

Thisform Top: 118
Thisform Left: 209
Thisform Height: 460
Thisform Width: 726
Pageframe Left: 3
Pageframe Top: 1
Pageframe Height: 330
Pageframe Width: 722
First Container Top: 0
First Container Left: 0
First Container Height: 299
First Container Width: 713
Inner Container Top: 45
Inner Container Left: 0
Inner Container Height: 268
Inner Container Width: 709

after SetFocus() - nothing changed
Thisform Top: 118
Thisform Left: 209
Thisform Height: 460
Thisform Width: 726
Pageframe Left: 3
Pageframe Top: 1
Pageframe Height: 330
Pageframe Width: 722
First Container Top: 0
First Container Left: 0
First Container Height: 299
First Container Width: 713
Inner Container Top: 45
Inner Container Left: 0
Inner Container Height: 268
Inner Container Width: 709

In 800*600 with 16 resolution

Thisform Top: -13
Thisform Left: 33
Thisform Height: 460
Thisform Width: 726
Pageframe Left: 3
Pageframe Top: 1
Pageframe Height: 330
Pageframe Width: 722
First Container Top: 0
First Container Left: 0
First Container Height: 299
First Container Width: 713
Inner Container Top: 45
Inner Container Left: 0
Inner Container Height: 268
Inner Container Width: 709

after set focus - top changed.
Thisform Top: 0
Thisform Left: 33
Thisform Height: 460
Thisform Width: 726
Pageframe Left: 3
Pageframe Top: 1
Pageframe Height: 330
Pageframe Width: 722
First Container Top: 0
First Container Left: 0
First Container Height: 299
First Container Width: 713
Inner Container Top: 45
Inner Container Left: 0
Inner Container Height: 268
Inner Container Width: 709