The problem is:

1. I want to allow the "-" character, but only as the first digit (do not
allow ".3-2" for example).
2. I would like the text box to automatically display the ".", if the first
digit is 1 to 4, or the first two digits are -1 to -4.
3. I want to disallow any number > 4 in position 2 (if pos 1 is "-", or
disallow anything > 3 in position 1 if nothing has been entered.

Is this going overboard on input validation? I'll be validating the actual
value on lostfocus; I realize I could just limit a value like "9.232" to
"3.00".

I've looked at the masked edit box, but it doesn't give me anything in the
way of allowing the "-" character, and I'm not crazy about it anyway.

Anybody have any fancy smancy keypress, text changed type code to do this?
Otherwise I'll probably just use another control for the "+" or "-" (would
rather not though).

Thanks,

Have a look in the messages posted today in the comp.lang.visual.basic for a
the thread with subject "AutoFormat TextBox Entry: ab1234 --> AB 1234". In
particular, look at the 2 messages from me (Rob Strover).  They may provide
a start for you to do what you require.

After you've looked there, if you've any questions about the postings please
feel free to ask me.

BTW, I noticed after I posted the second message that I'd left out a few
vital lines of code, not that, in any case, the code covers all
possiblities. [it's not been checked *that* well :-)]

(1)  A variable declaration at start of Text1_Change sub:

    Static bSpaceInserted As Boolean

and

(2)  immediately after the  sCurrLastChar = Right$(sText, 1) line:

    If sPrevLastChar = Space$(1) Then
        bSpaceInserted = False
    End If