Tcl

Add an Attachment from a BinData Object

Demonstrates the Chilkat Email.AddAttachmentBd method, which adds an attachment using the contents of a BinData object. The first argument is the attachment filename, the second is the BinData, and the third is the content type — if empty, it is inferred from the filename extension. This example loads a PDF into a BinData and attaches it.

Background: BinData is Chilkat's container for raw binary data. Attaching from a BinData is the right approach when the file's bytes are already in memory — generated on the fly, downloaded, or read from a database — rather than sitting on disk (which would use AddFileAttachment). Chilkat Base64-encodes the bytes into the message automatically.

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Tcl


load ./chilkat.dll

set success 0

#  Demonstrates the AddAttachmentBd method, which adds an attachment using the contents of a
#  BinData object.  The first argument is the attachment filename, the second is the BinData
#  object, and the third is the content type (inferred from the filename extension if empty).

set email [new_CkEmail]

CkEmail_put_Subject $email "Attach from BinData"
CkEmail_put_Body $email "Please see the attached file."

#  Load a file into a BinData object, then attach it.
set bd [new_CkBinData]

set success [CkBinData_LoadFile $bd "qa_data/attachments/report.pdf"]
if {$success == 0} then {
    puts [CkBinData_lastErrorText $bd]
    delete_CkEmail $email
    delete_CkBinData $bd
    exit
}

set success [CkEmail_AddAttachmentBd $email "report.pdf" $bd "application/pdf"]
if {$success == 0} then {
    puts [CkEmail_lastErrorText $email]
    delete_CkEmail $email
    delete_CkBinData $bd
    exit
}

puts "NumAttachments = [CkEmail_get_NumAttachments $email]"

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

delete_CkEmail $email
delete_CkBinData $bd