How do you use TripleState property?

[Guest]

I'm building a QI database where we are tracking call taking proficiency with
40 yes/ no/ na questions. I know I need to set up the fields with
TripleState property but I don't know if it is a property I set on the field
in the form or to the fields in the table.

Thanks,
Moose Lover

 

[Dirk Goldgar]

I'm building a QI database where we are tracking call taking
proficiency with 40 yes/ no/ na questions. I know I need to set up
the fields with TripleState property but I don't know if it is a
property I set on the field in the form or to the fields in the table.

TripleState is a property of the check box, toggle button, and option
button controls, and it only applies when the control is either unbound
or bound to a number field, not to a yes/no field. Under those
conditions it cycles the value of the control (and the field, if any, to
which it is bound) among the values of True/Yes, False/No, and Null. A
value of Null can be interpreted as "unknown" or "n/a", if you like, but
you have to be careful, because it could also represent "not answered",
which you may or may not want to consider to be a distinct condition
from "n/a".