Blocking non-numeric characters for PtNumeric Widget


We have developed an application which uses PtNumericWidget for allowing
user to enter a numeric value. We have observed that if non-numeric
characters are entered by the user, it displays those. In lost focus event,
the numeric widget shows minimum set value. At the time of saving user
selected value, we have validated the entry. But since the minium set value
is also an acceptable entry, our validation is always successful. Is there
any way of blocking non-numeric character display and entry for the