PowerBuilder

Attach a File with an Explicit Content Type

Demonstrates the Chilkat Email.AddFileAttachment2 method, which attaches a file from the filesystem and lets you explicitly specify its content type rather than having Chilkat infer it from the file extension. This example attaches a binary file as application/octet-stream.

Background: Extension-based type detection is convenient but not always right — a file may have an unusual or missing extension, or you may need a very specific MIME type for the recipient to process it correctly. Specifying the content type explicitly removes the guesswork. application/octet-stream is the generic "arbitrary binary data" type, a safe default that tells the client to treat the attachment as an opaque download rather than trying to render it.

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integer li_rc
integer li_Success
oleobject loo_Email

li_Success = 0

//  Demonstrates the AddFileAttachment2 method, which attaches a file and lets you
//  explicitly specify its content type instead of letting Chilkat infer it.

loo_Email = create oleobject
li_rc = loo_Email.ConnectToNewObject("Chilkat.Email")
if li_rc < 0 then
    destroy loo_Email
    MessageBox("Error","Connecting to COM object failed")
    return
end if
loo_Email.Subject = "Email with a file attachment"
loo_Email.Body = "Please see the attached file."

//  Attach a file, explicitly specifying the content type.
li_Success = loo_Email.AddFileAttachment2("qa_data/attachments/data.bin","application/octet-stream")
if li_Success = 0 then
    Write-Debug loo_Email.LastErrorText
    destroy loo_Email
    return
end if

Write-Debug "NumAttachments = " + string(loo_Email.NumAttachments)

//  Note: The path "qa_data/attachments/data.bin" is a relative local filesystem path,
//  relative to the current working directory of the running application.


destroy loo_Email