James,

quote
But it won't change the position of the controls -- as the fontsize grows, I want the form to grow as well, to have all the controls on the form to expand and move proportionally so that, in effect, it looks like it had previously, only larger.
unquote

Are you sure, that will not only need an intensive trouble with anchors but will also need a very special form design. I would not think of even start to think how that has to be programmed in VFP. Maybe it is a start to make use of the Windows magnifier technique.

Do keep me posted when you have skinned this goat.