Sample code for 30+ languages & platforms
Xojo Plugin

MIME Header Q and B Encoding and Decoding

See more Encryption Examples

Demonstrates how to Q and B encode/decode.

Chilkat Xojo Plugin Downloads

Xojo Plugin
Dim success As Boolean
success = False

Dim sb As New Chilkat.StringBuilder

success = sb.Append("This is a test")

System.DebugLog(sb.GetEncoded("B","utf-8"))
// output is:
// =?utf-8?B?VGhpcyBpcyBhIHRlc3Q=?=

System.DebugLog(sb.GetEncoded("Q","iso-8859-1"))
// output is:
// =?utf-8?Q?This_is_a_test?=

Dim sb2 As New Chilkat.StringBuilder

success = sb2.Append("=?utf-8?B?VGhpcyBpcyBhIHRlc3Q=?=")
success = sb2.Decode("B","utf-8")
System.DebugLog(sb2.GetAsString())

// output is:
// This is a test

sb2.Clear 
success = sb2.Append("=?utf-8?Q?This_is_a_test?=")
success = sb2.Decode("Q","utf-8")
System.DebugLog(sb2.GetAsString())

// output is:
// This is a test

// "B" or "Q" will decode both B and Q.
sb2.Clear 
success = sb2.Append("=?utf-8?Q?This_is_a_test?= 123 =?utf-8?B?VGhpcyBpcyBhIHRlc3Q=?=")
success = sb2.Decode("Q","utf-8")
System.DebugLog(sb2.GetAsString())

// output is:
// This is a test 123 This is a test