Lianja

Create a multipart/alternative MIME Entity

Demonstrates the Chilkat Mime.NewMultipartAlternative method, which initializes the object as an empty multipart/alternative entity. It takes no arguments; the alternative representations are then appended.

Background: multipart/alternative holds several renderings of the same content and lets the client pick the best one it can display — the standard way to send an email as both plain text and HTML. Order matters: parts go from least to most preferred, so the plain-text version comes first and the HTML last, and a client shows the last one it understands.

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llSuccess = .F.

//  Demonstrates the Mime.NewMultipartAlternative method, which initializes the object as an empty
//  multipart/alternative entity, clearing any existing content.  It takes no arguments.

loMime = createobject("CkMime")

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

//  multipart/alternative holds two representations of the SAME content; the client displays the
//  last one it can render.  Add a plain-text part, then an HTML part.
loTextPart = createobject("CkMime")
llSuccess = loTextPart.SetBodyFromPlainText("Hello (plain text version).")
if (llSuccess = .F.) then
    ? loTextPart.LastErrorText
    release loMime
    release loTextPart
    return
endif

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

loHtmlPart = createobject("CkMime")
llSuccess = loHtmlPart.SetBodyFromHtml("<html><body><b>Hello</b> (HTML version).</body></html>")
if (llSuccess = .F.) then
    ? loHtmlPart.LastErrorText
    release loMime
    release loTextPart
    release loHtmlPart
    return
endif

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

? "Number of alternatives: " + str(loMime.NumParts)


release loMime
release loTextPart
release loHtmlPart