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# Opposite of Hex function?

Posted on 1998-02-01
Medium Priority
499 Views
Hello all!
I am wondering if there is any opposite of the Hex function?
Ex. Hex(255) returns FF.
Then should ThatFunction(FF) return 255!
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Question by:martinag
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1 Comment

LVL 8

Accepted Solution

mrmick earned 400 total points
ID: 1454797
Function HexStringToDecimal(Hex As String) As Long

Dim strIn\$, i&, j&, k&, c\$
strIn = Trim\$(Hex)
If Len(strIn) > 8 Then
'Overflow
Exit Function
End If
For i = Len(strIn) To 1 Step -1
c = UCase(Mid\$(Hex, i, 1))
Select Case c
Case "0" To "9"
k = k + CLng(c) * 16 ^ j
Case "A" To "F"
k = k + (Asc(c) - 55) * 16 ^ j
Case Else
'Invalid character Error
Exit Function
End Select
j = j + 1
Next
HexStringToDecimal = k

End Function

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