A boolean expression that indicates whether the property is of float type.
A float type is represented in the format: [+/-]digit[.]digit[e/E/d/D][+/-]digit,
where digit is any combination of digit characters. Use the Numeric
property to specify when only long values are allowed in the
property. Use the AllowSpin
property to specify whether the numeric properties show a spin control. Use
the SpinStep property to define the proposed
change when user clicks the spin. If the NumericFloat property is True, the
input characters are filtered, and so characters that are not in the number
representation can't be inserted. For instance, if you have a number such of
100, and you type 'e' character, the number will be 100e, but if you would
type again a new 'e' it will not be accepted, so the number will stay as 100e.
