Thats sounds good, except that there's no way that I
can see to determine the number of lines.

Depending on the amount of text, and the width
of the label, which is fixed, there could be any
number of lines of text.

I need to know the resulting height of the control.
And, if there are less lines than it takes to fill
the control, the I want to size it smaller.

If there are more lines than can fit onto the label,
I want to size it larger.