Function Azalea_Code_128_C(ByVal yourData As String) As String
' C128Tools 29may12 jwhiting
' Copyright 2012 Azalea Software, Inc. All rights reserved. www.azaleabarcodes.com

' Creating a Code 128 code set C barcode using C128Tools.
' Your input, yourData, is a string to be encoded as a Code 128 code set C symbol.
' yourData must be the Code 128 code set C character set. Input error checking is your responsibility.

  Dim temp As String                 ' a temporary placeholder
  Dim checkDigitSubtotal As Integer  ' a check digit throwaway
  Dim i As Integer                   ' our loop counter
  Dim fontString As String           ' a temporary placeholder
  Dim chunk As String                ' loop chunk
   
  ' seed the variables
  fontString = Chr(183)                   ' code set C start glyph
  checkDigitSubtotal = 105                ' code set C start checkdigit value
  temp = yourData                         ' 2 character chunks

  ' pad odd length input with a leading zero goesHere PRN
  
  ' Calculate the Code 128 mod 103 check digit
  For i = 1 To Len(yourData) / 2
    chunk = Left$(temp, 2)
    checkDigitSubtotal = checkDigitSubtotal + Val(chunk) * i
    Select Case Val(chunk)
      Case 0
        fontString = fontString + Chr(206)
      Case 1 To 93
        fontString = fontString & Chr(Val(chunk) + 32)
      Case Is > 93
        fontString = fontString & Chr(Val(chunk) + 103)
    End Select
    temp = Right$(temp, Len(temp) - 2)
  Next i
  checkDigitSubtotal = checkDigitSubtotal Mod 103

  ' Put together the final output string
  ' code set C start bar, the encoded string, check digit, stop bar
  Select Case checkDigitSubtotal
    Case 0
      Azalea_Code_128_C = fontString & Chr(206) & Chr(196)
    Case 1 To 93
      Azalea_Code_128_C = fontString & Chr(checkDigitSubtotal + 32) & Chr(196)
    Case Is > 93
      Azalea_Code_128_C = fontString & Chr(checkDigitSubtotal + 103) & Chr(196)
  End Select

End Function