Set the Content-Disposition of an Attachment

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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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    success := false

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

    email := chilkat.NewEmail()
    email.SetSubject("Set attachment disposition")

    email.AddStringAttachment("image.txt","(pretend inline content)")

    //  Set the disposition of the first attachment (index 0) to "inline".
    success = email.SetAttachmentDisposition(0,"inline")
    if success == false {
        fmt.Println(email.LastErrorText())
        email.DisposeEmail()
        return
    }

    //  The attachment's Content-Disposition is now "inline".
    fmt.Println(*email.GetMime())

    email.DisposeEmail()