Lianja

MIME Multipart Boundary and Preamble Properties

Demonstrates the Boundary property, which gets or sets the raw boundary token of a multipart entity (without surrounding quotation marks), and UseMmDescription, which controls whether the conventional preamble text is emitted when serializing a multipart entity.

Background. A multipart boundary separates the constituent parts. Chilkat quotes the token automatically in the header when required. The preamble is ignored by MIME-aware readers and is off by default.

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llSuccess = .F.

loMime = createobject("CkMime")

//  Create a multipart/mixed entity.
llSuccess = loMime.NewMultipartMixed()
if (llSuccess = .F.) then
    ? loMime.LastErrorText
    release loMime
    return
endif

//  Boundary is the raw boundary token, without surrounding quotation marks.  Chilkat quotes it
//  automatically in the serialized header when required.
loMime.Boundary = "example-boundary"

//  UseMmDescription controls whether the conventional preamble text
//  "This is a multi-part message in MIME format." is emitted.  The default is .F..
loMime.UseMmDescription = .T.

//  Add a simple part so the multipart has content.
loPart = createobject("CkMime")
llSuccess = loPart.SetBodyFromPlainText("First part.")
if (llSuccess = .F.) then
    ? loPart.LastErrorText
    release loMime
    release loPart
    return
endif

llSuccess = loMime.AppendPart(loPart)
if (llSuccess = .F.) then
    ? loMime.LastErrorText
    release loMime
    release loPart
    return
endif

? "Boundary = " + loMime.Boundary

lcMimeStr = loMime.GetMime()
if (loMime.LastMethodSuccess = .F.) then
    ? loMime.LastErrorText
    release loMime
    release loPart
    return
endif

? lcMimeStr


release loMime
release loPart