Create a Multipart-Mixed MIME Message

Creates a multipart-mixed MIME message with the 1st part containing plain-text, and the 2nd part containing a GIF image.

Download Chilkat MIME ActiveX

LOCAL loMime
LOCAL lnSuccess
LOCAL loTextPart
LOCAL loImagePart

loMime = CreateObject('Chilkat.Mime')

lnSuccess = loMime.UnlockComponent("Anything for 30-day trial.")
IF (lnSuccess = 0) THEN
    ? loMime.LastErrorText
    QUIT
ENDIF

*  Initialize a multipart-mixed MIME message:
loMime.NewMultipartMixed()

*  Each sub-part will be prepared, then added to the
*  top-level multipart/mixed MIME object, and then written
*  to a file.

*  First the plain-text sub-part
*  Add a few header fields:
loTextPart = CreateObject('Chilkat.Mime')
loTextPart.AddHeaderField("Description","this is a test")
loTextPart.AddHeaderField("MyId","123")
loTextPart.SetBodyFromPlainText("This is the plain-text body")

*  Now for a GIF image:
loImagePart = CreateObject('Chilkat.Mime')
lnSuccess = loImagePart.SetBodyFromFile("starfish.gif")
IF (lnSuccess = 0) THEN
    ? loImagePart.LastErrorText
    QUIT
ENDIF

*  Append each sub-part to the top-level MIME object:
loMime.AppendPart(loTextPart)
loMime.AppendPart(loImagePart)

*  Write the full multipart-mixed MIME to a file.
lnSuccess = loMime.SaveMime("out.mim")
IF (lnSuccess = 0) THEN
    ? loMime.LastErrorText
    QUIT
ENDIF

? loMime.GetMime()

*  The MIME should look something like this:
*  (See more comments following this sample output...)

*  
Content-Type: multipart/mixed;
 boundary="------------080503030004040303020208"

This is a multi-part message in MIME format.

--------------080503030004040303020208
Description: this is a test
MyId: 123
Content-Type: text/plain
Content-Transfer-Encoding: 7bit

This is the plain-text body
--------------080503030004040303020208
Content-Disposition: attachment; filename="starfish.gif"
Content-Transfer-Encoding: base64
Content-Type: image/gif; name="starfish.gif"

R0lGODlhIAAgAPcAAP///+/v7/f39+/n5/fv7//39/fn597OzufW1tbGxs69vffe3u/W1salpZQQ
EIQYEJwQCJQYCJwYCM6clL2Ee5wpGIwhEK0YANatpdalnHMYCKUhCJQYAKUYAM6Ec5QhCJwhCPfW
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RZ8cjRWro0QEEsQVGTiKkLAM5QNGFWrAQFNLBIzABQPLRktQQAA7

--------------080503030004040303020208--

*  To explicitly set the boundary, set the Boundary property, like this:
loMime.Boundary = "SOME_UNIQUE_BOUNDARY_STRING"

*  To eliminate the "This is a multi-part message in MIME format."
*  from the output, set the UseMmDescription property = 0
loMime.UseMmDescription = 0

? loMime.GetMime()

*  The MIME now looks like this:
*  
Content-Type: multipart/mixed;
 boundary="SOME_UNIQUE_BOUNDARY_STRING"

--SOME_UNIQUE_BOUNDARY_STRING
Description: this is a test
MyId: 123
Content-Type: text/plain
Content-Transfer-Encoding: 7bit

This is the plain-text body
--SOME_UNIQUE_BOUNDARY_STRING
Content-Disposition: attachment; filename="starfish.gif"
Content-Transfer-Encoding: base64
Content-Type: image/gif; name="starfish.gif"

R0lGODlhIAAgAPcAAP///+/v7/f39+/n5/fv7//39/fn597OzufW1tbGxs69vffe3u/W1salpZQQ
EIQYEJwQCJQYCJwYCM6clL2Ee5wpGIwhEK0YANatpdalnHMYCKUhCJQYAKUYAM6Ec5QhCJwhCPfW
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--SOME_UNIQUE_BOUNDARY_STRING--