Tcl

Set the Charset of an Attachment

Demonstrates the Chilkat Email.SetAttachmentCharset method, which sets the charset parameter of the Content-Type header field for the attachment at a given zero-based index. This example adds a text attachment and sets its charset to utf-8.

Background: For a text attachment, the charset parameter tells the receiving client which character encoding the bytes use, so accented or non-Latin text renders correctly. Setting it explicitly (typically utf-8) removes ambiguity when the attachment contains non-ASCII content — without it, a client may guess wrong and display garbled characters.

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Tcl


load ./chilkat.dll

set success 0

#  Demonstrates the SetAttachmentCharset method, which sets the charset parameter of the
#  Content-Type header field for the attachment at the given zero-based index.

set email [new_CkEmail]

CkEmail_put_Subject $email "Set attachment charset"

CkEmail_AddStringAttachment $email "notes.txt" "Some notes."

#  Set the charset of the first attachment (index 0) to utf-8.
set success [CkEmail_SetAttachmentCharset $email 0 "utf-8"]
if {$success == 0} then {
    puts [CkEmail_lastErrorText $email]
    delete_CkEmail $email
    exit
}

#  The attachment's Content-Type now includes charset="utf-8".
puts [CkEmail_getMime $email]

delete_CkEmail $email