Tcl
Tcl
Save an Email to a Temporary MHT File
See more Email Object Examples
Demonstrates the Chilkat Email.CreateTempMht method, which prepares the email for display in a web browser and saves it as a temporary MHT file, returning the path that was written. If the filename argument is empty, Chilkat chooses a temporary filename.
To make the message viewable as a standalone web page, the method transforms it: all attachments are dropped; if the email has both HTML and plain-text alternatives, the plain-text alternative is dropped; and if the email has only a plain-text body, it is converted to HTML. This example loads an HTML email and creates the temporary MHT.
Background: MHT (MIME HTML) is a single-file web-page-archive format — it packs an HTML document together with its images and style sheets into one file, which is essentially what an HTML email already is. Because a Windows WebBrowser control can navigate directly to an
.mht file, writing the message out as MHT is a quick way to render a received email, inline images and all, inside a desktop application. The transformations (dropping attachments, keeping just the HTML representation) ensure the result is a clean, self-contained page. For unpacking to loose files served by a web application instead, see AspUnpack.Chilkat Tcl Downloads
load ./chilkat.dll
set success 0
# Demonstrates the CreateTempMht method, which prepares the email for viewing in a browser
# and saves it as a temporary MHT (MIME HTML) file, returning the file path.
#
# To produce browser-viewable output, CreateTempMht transforms the message: it drops all
# attachments; if the email has both HTML and plain-text alternatives it drops the
# plain-text alternative; and if the email has only a plain-text body it converts that
# body to HTML. Passing an empty filename lets Chilkat choose a temporary filename.
set email [new_CkEmail]
set success [CkEmail_LoadEml $email "qa_data/eml/html_with_images.eml"]
if {$success == 0} then {
puts [CkEmail_lastErrorText $email]
delete_CkEmail $email
exit
}
# Transform the email for browser display and save it as a temporary MHT file
# (empty filename = auto-generated temp file).
set mhtPath [CkEmail_createTempMht $email ""]
puts "Temporary MHT file: $mhtPath"
# Note: The path "qa_data/..." is a relative local filesystem path,
# relative to the current working directory of the running application.
delete_CkEmail $email