Tcl

Add a Related Item from BinData by Content-Location

Demonstrates the Chilkat Email.AddRelatedBd2 method, which adds a related item using the binary data in a BinData object, addressed by Content-Location. The second argument specifies the filename, path, or URL used by the corresponding HTML reference. This example embeds an image referenced as logo.png.

Background: This is the binary counterpart of AddRelatedString2 and the Content-Location sibling of AddRelatedBd. Instead of a generated cid: reference, the HTML keeps an ordinary src="logo.png" and the related part is matched to it by name — convenient when turning an existing web page into an email so its original relative URLs keep working.

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Tcl


load ./chilkat.dll

set success 0

#  Demonstrates the AddRelatedBd2 method, which adds a related item using the binary data in
#  a BinData object, addressed by Content-Location.  The second argument specifies the filename/path/URL
#  used by the corresponding HTML reference.

set email [new_CkEmail]

CkEmail_put_Subject $email "Related image from BinData (Content-Location)"

#  The HTML references the image by the same name used as the Content-Location.
CkEmail_SetHtmlBody $email "<html><body><img src=\"logo.png\"/></body></html>"

#  Load the image data from a file into a BinData object.
set bdImage [new_CkBinData]

set success [CkBinData_LoadFile $bdImage "qa_data/images/logo.png"]
if {$success == 0} then {
    puts [CkBinData_lastErrorText $bdImage]
    delete_CkEmail $email
    delete_CkBinData $bdImage
    exit
}

#  Add the image as a related item addressed by Content-Location "logo.png".
set success [CkEmail_AddRelatedBd2 $email $bdImage "logo.png"]
if {$success == 0} then {
    puts [CkEmail_lastErrorText $email]
    delete_CkEmail $email
    delete_CkBinData $bdImage
    exit
}

puts "NumRelatedItems = [CkEmail_get_NumRelatedItems $email]"

#  Note: The path "qa_data/images/logo.png" is a relative local filesystem path,
#  relative to the current working directory of the running application.

delete_CkEmail $email
delete_CkBinData $bdImage