(Visual Basic 6.0) Quoted-Printable Encode/Decode a String

Visual Basic 6.0 example to quoted-printable encode and decode a string.

Chilkat ActiveX Downloads ActiveX for 32-bit and 64-bit Windows

' This example requires the Chilkat API to have been previously unlocked.
' See Global Unlock Sample for sample code.

Dim crypt As New ChilkatCrypt2

' Here's a string in Icelandic using non us-ascii chars:
Dim s As String
s = "Ég get etið gler án þess að meiða mig."

crypt.CryptAlgorithm = "none"
crypt.EncodingMode = "quoted-printable"

' Quoted-printable encode/decode the iso-8859-1
' representation of the string.  Notice how each
' Icelandic char is represented by 1 byte:
crypt.Charset = "iso-8859-1"
Dim qp As String
qp = crypt.EncryptStringENC(s)
Debug.Print "iso-8859-1:"
Debug.Print qp
Dim decoded As String
decoded = crypt.DecryptStringENC(qp)
Debug.Print decoded

' Now do the same using utf-8. Notice how each
' Icelandic char is represented by 2 bytes in utf-8:
crypt.Charset = "utf-8"
Dim qp As String
qp = crypt.EncryptStringENC(s)
Debug.Print "utf-8:"
Debug.Print qp
Dim decoded As String
decoded = crypt.DecryptStringENC(qp)
Debug.Print decoded