Tcl

Set the Content-Disposition of an Attachment

Demonstrates the Chilkat Email.SetAttachmentDisposition method, which sets the Content-Disposition value for the attachment at a given zero-based index. The default disposition is attachment. This example changes an attachment's disposition to inline.

Background: The Content-Disposition header hints how a client should present a part: attachment means "offer it as a download," while inline means "display it within the message" (as an email client does with an embedded image). Setting it lets you control that behavior — though clients ultimately decide how to honor the hint.

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Tcl


load ./chilkat.dll

set success 0

#  Demonstrates the SetAttachmentDisposition method, which sets the Content-Disposition
#  value for the attachment at the given zero-based index.  The default disposition is
#  "attachment".

set email [new_CkEmail]

CkEmail_put_Subject $email "Set attachment disposition"

CkEmail_AddStringAttachment $email "image.txt" "(pretend inline content)"

#  Set the disposition of the first attachment (index 0) to "inline".
set success [CkEmail_SetAttachmentDisposition $email 0 "inline"]
if {$success == 0} then {
    puts [CkEmail_lastErrorText $email]
    delete_CkEmail $email
    exit
}

#  The attachment's Content-Disposition is now "inline".
puts [CkEmail_getMime $email]

delete_CkEmail $email