MFC String Table Numeric options

Question

In the String Table for an edit box for numeric entries I can do:

1E__C X(10): Alphanumeric 10

1N__C 000: Numeirc 3, with leading zeroes (cannot insert 0)

1N__C 999: Numeric 3 ( cannot insert 0)

1N__C NNN: Numeric 3, 0 can be inserted (just ONE 0)

Is there an entry to the String Table so that the following entry can be inserted to the Edit Box: '000', accepting only numbers or do I have to do it myself?

Thanks in advance, Sun