NSStepper Action Problem

[Riccardo Mottola]

Hi,

I noticed that when I define a NSStepper with a wide range (e.g. 1000) 
and a float increment of 0.1, after a dozen of "increments" things go 
adrift with a rounding error.. eg 5.10000001 instead of 5.1

I have tested on Mac 10.5 and PPC and get different errors (e.g. 
5.099999998) but the problem is the same, it is nto a GS bug, but 
probably a problem on how the internals are handled.

What solution is possible? I have both a textfield and a stepper that 
should interact.
I was thinking of just getting the "action" of the Stepper and then 
keeping a variable of mine with, eventually a different precision or 
that does other rounding tricks.
However, how can I know if increment or decrement have been clicked? Is 
there a trick? can I reliably put an action on the two arrows but action 
was desired by the user?

A really crude workaround would be to use just a very high number in the 
stepper, integer values and not-wrapping and thus compating old and new 
value to know if "+" or "-" were the choice, but looks pretty much a hack.

Thanks - Riccardo