Tcl

Get a Header Field of a Related Item

Demonstrates the Chilkat Email.GetRelatedHeader method, which returns the value of a named header field of a related item. The first argument is the zero-based related-item index and the second is the MIME header-field name. This example reads the Content-Type header of a related style sheet.

Background: Each related item is a MIME part with its own header block. Where GetRelatedAttr extracts a single named parameter from a header, GetRelatedHeader returns the entire value of a header field — for example the full Content-Type or Content-Location line — which is handy for inspecting exactly how an embedded resource is described.

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Tcl


load ./chilkat.dll

#  Demonstrates the GetRelatedHeader method, which returns the value of a header field (by
#  name) of a related item.  The first argument is the zero-based related-item index and the
#  second is the MIME header-field name.

set email [new_CkEmail]

CkEmail_put_Subject $email "GetRelatedHeader example"

#  Set an HTML body and add a related style sheet (index 0).
CkEmail_SetHtmlBody $email "<html><head><link rel=\"stylesheet\" href=\"styles.css\"/></head><body>Styled.</body></html>"
CkEmail_AddRelatedString2 $email "styles.css" "body { color: navy; }" "utf-8"

#  Get the Content-Type header of the first related item (index 0).
set ct [CkEmail_getRelatedHeader $email 0 "Content-Type"]
puts "Related item 0 Content-Type: $ct"

delete_CkEmail $email