Lianja

Access a Part in a Multipart MIME Entity

Demonstrates the Chilkat Mime.PartAt method, which provides live access to the direct child at a zero-based index. The first argument is the index and the second is a Mime object that will reference the child. Modifying it modifies the child stored in the parent tree.

Note: The file paths are relative to the application's current working directory. Absolute paths may also be used. Supply the paths appropriate to your own environment.

Background: This is how you reach into a multipart message to inspect or edit an individual part — read a part's Content-Type, extract an attachment's body, or change a part in place. The key point is that the returned Mime is a live reference, not a copy, so edits to it flow back into the parent tree. Loop from 0 to NumParts - 1 to visit every direct child.

Chilkat Lianja Downloads

Download Chilkat for Lianja

Lianja

llSuccess = .F.

loMime = createobject("CkMime")
llSuccess = loMime.LoadMimeFile("qa_data/multipart_message.eml")
if (llSuccess = .F.) then
    ? loMime.LastErrorText
    release loMime
    return
endif

//  PartAt provides LIVE access to a direct child part.  The 1st argument is the zero-based index
//  and the 2nd is a Mime object that will reference the child.  Modifying it modifies the child in
//  the parent tree.
n = loMime.NumParts
? "Number of parts: " + str(n)

loPart = createobject("CkMime")

for i = 0 to n - 1
    llSuccess = loMime.PartAt(i,loPart)
    if (llSuccess = .F.) then
        ? loMime.LastErrorText
        release loMime
        release loPart
        return
    endif

    ? "Part " + str(i) + " Content-Type: " + loPart.ContentType
next


release loMime
release loPart