Alejandro,

>I want navigation buttons defined in a form class to move to a predefined position that depends on the form size. I can accomplish this at run time, but how do you make it happen automatically at design time, too?


Do You want to have the buttons lets say always on the
bottom, when resizing the form?

You easily do that in the resize-event.

I normally put them into a container. the container is
as wide as the form and has some space on the top and
the bottom in order to make the buttons look ok.
But You can address each single object as well

Something like this

PROCEDURE Resize  && <- of the form

with this
    .cntButtons.width = .width
    .cntButtons.top   = .Height - .cntButtons.Height
endwith

ENDPROC

HTH