I'm developing a program at home on a Windows Vista computer. In it I create
a form with a few buttons on it that fill up the form's visible area.

So, I took the application to work, where I use a Windows XP PRO computer.
When I ran my program, the form visible area is different! Not very much,
but it is obvious. I haven't done experiments yet, but it looks like the
form is slightly wider and slightly shorter. I now have extra space on the
right of my buttons as well as the bottom clipping of the bottom button.

Why is this the case? And, more to the point, is there a way of detecting
what the actually VISIBLE size is to a form when establishing its size
(Width,Height) at RUNTIME? Or is this something to do with the coordinate
system being different (e.g., one OS considers the form boundary as part of
the size/space, the other does not, or differing amountsbased on some sort
of 'style'). I guess I could just add extra space to be sure, but this
behavior seems weird to me...

[==Peter==]