Hugo,
If you have to do the calculation a lot you can prebuild a table and do lookups into it rather than iterating a lot.
You could also do a polynomial curve fit if you really didn't want to iterate. It might be worth plotting fontsize as X and height as Y and see how well a 1st or 2nd degree polynomial fit the data for a given font.
Update: ok curiousity got the better of me *g*
For Arial on my XP system:
h = 1.476(pt size) + 1.0714
h = 8e-8(pt size)
2 + 1.476(pt size) + 1.0714
>I know David it is not important, I will probably do an iteration, I just wanted to be sure there is no non-iterative way.
