Visual Basic (VB and VBA)

Copyright 1999-2001 Christopher Greaves. All rights reserved. Home Page and email to [email protected]

If in doubt, record a macro and inspect the entrails!

Here is an INDEX to all the procedures.

You will probably need one copy of my GLOBAL DECLARATIONS.

Public Function strHexToChar(ByVal strText As String) As String
' Procedure :   strHexToChar
' Description:  Convert a string of hexadecimal digits to a string of characters.
' Copyright:    Chris Greaves Inc.
' Inputs:       STRING of characters in range 0-9 and A-F.
' Returns:      STRING.
' Assumes:      Pairs of valid Hex digits are presented.
' Side Effects: None.
' Tested:       By the calls shown below.
'Here is a rather unwieldy way of converting a string of hexadecimal (base 16) digit characters to a character string.
'
'Since this is an internal function (called by other procedures, not directly called by the user) I am allowed to make the assumption that the incoming string of hex digits is a valid string; that is, that it is an even number of characters taken from the set 0-9 and A-F.
'
'Somewhere in between the user call (a Macro) and this procedure must be a procedure that checks that the string is valid.
'
'I have a related function lngHexToLong.
'Might be slightly quicker to loop like:
'    For i = 1 To Len(HexString) Step 2
'        NewString = NewString & Chr$(Val("&H" & Mid$(HexString, i, 2)))
'    Next i
'because you don't have to continually re-allocate the original string.
'Ron Mittelman                Rmittelman@ Visto.com
'Procs    Dim intChar As Integer
    Dim strResult As String
    ' Pad the LHS with hex zero (if required) to make string an even number of digits.
    If Len(strText) Mod 2 <> 0 Then
        strText = "0" & strText
    End If
    ' Collect two digits at a time
    Dim i As Integer
    For i = 1 To Len(strText) Step 2
        strResult = strResult & Chr$(Val("&H" & Mid$(strText, i, 2)))
    Next i
    strHexToChar = strResult
'Sub TESTstrHexToChar()
'MsgBox strHexToChar("414243") ' ABC
'End Sub
End Function

We all knew nothing when we started …

Home Page and Contact Information Send email to [email protected]. This page was last updated Thursday, November 15, 2001

Visual Basic (VB and VBA)

Copyright 1999-2001 Christopher Greaves. All rights reserved. Home Page and email to [email protected]

If in doubt, record a macro and inspect the entrails!

Here is an INDEX to all the procedures.

You will probably need one copy of my GLOBAL DECLARATIONS.

Public Function strHexToChar(ByVal strText As String) As String
' Procedure :   strHexToChar
' Description:  Convert a string of hexadecimal digits to a string of characters.
' Copyright:    Chris Greaves Inc.
' Inputs:       STRING of characters in range 0-9 and A-F.
' Returns:      STRING.
' Assumes:      Pairs of valid Hex digits are presented.
' Side Effects: None.
' Tested:       By the calls shown below.
'Here is a rather unwieldy way of converting a string of hexadecimal (base 16) digit characters to a character string.
'
'Since this is an internal function (called by other procedures, not directly called by the user) I am allowed to make the assumption that the incoming string of hex digits is a valid string; that is, that it is an even number of characters taken from the set 0-9 and A-F.
'
'Somewhere in between the user call (a Macro) and this procedure must be a procedure that checks that the string is valid.
'
'I have a related function lngHexToLong.
'Might be slightly quicker to loop like:
'    For i = 1 To Len(HexString) Step 2
'        NewString = NewString & Chr$(Val("&H" & Mid$(HexString, i, 2)))
'    Next i
'because you don't have to continually re-allocate the original string.
'Ron Mittelman                Rmittelman@ Visto.com
'Procs    Dim intChar As Integer
    Dim strResult As String
    ' Pad the LHS with hex zero (if required) to make string an even number of digits.
    If Len(strText) Mod 2 <> 0 Then
        strText = "0" & strText
    End If
    ' Collect two digits at a time
    Dim i As Integer
    For i = 1 To Len(strText) Step 2
        strResult = strResult & Chr$(Val("&H" & Mid$(strText, i, 2)))
    Next i
    strHexToChar = strResult
'Sub TESTstrHexToChar()
'MsgBox strHexToChar("414243") ' ABC
'End Sub
End Function

We all knew nothing when we started …

Home Page and Contact Information Send email to [email protected]. This page was last updated Thursday, November 15, 2001