Visual FoxPro

Set a MIME Body, Preserving Content Headers

Demonstrates the Chilkat Mime.SetBody method, which sets the current part's body while preserving the existing content headers (Content-Type, charset, Content-Transfer-Encoding). The only argument is the body text; it is a void method.

Background: Unlike the SetBodyFrom... methods, which set both the content and the headers that describe it, SetBody replaces only the body text and leaves the existing Content-Type and encoding in place. That is what you want when the media type is already correct and you simply need to swap in new content — updating a templated part, for instance — without re-declaring its type.

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LOCAL lnSuccess
LOCAL loMime
LOCAL lcMimeText

lnSuccess = 0

*  Demonstrates the Mime.SetBody method, which sets the current part's body while preserving the
*  existing content headers (Content-Type, charset, Content-Transfer-Encoding).  The only argument
*  is the body text.  It is a void method.

loMime = CreateObject('Chilkat.Mime')

*  Establish the content headers first.
lnSuccess = loMime.SetBodyFromPlainText("initial")
IF (lnSuccess = 0) THEN
    ? loMime.LastErrorText
    RELEASE loMime
    CANCEL
ENDIF

*  Replace just the body text, keeping the existing Content-Type and encoding.
loMime.SetBody("This is the replacement body text.")

lcMimeText = loMime.GetMime()
IF (loMime.LastMethodSuccess = 0) THEN
    ? loMime.LastErrorText
    RELEASE loMime
    CANCEL
ENDIF

? lcMimeText

RELEASE loMime