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Check if a MIME Part is Plain Text

Demonstrates the Chilkat Mime.IsPlainText method, which returns whether the Content-Type is exactly text/plain. It takes no arguments and applies to the current part.

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

Background: Inside a multipart/alternative, this is how you pick out the plain-text rendering — the fallback to show when HTML cannot be displayed, or the version to index for search. It is the specific counterpart to IsHtml.

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Local $bSuccess = False

;  Demonstrates the Mime.IsPlainText method, which returns whether the Content-Type is text/plain.  It takes no arguments and applies to the current
;  part.  This example iterates the parts of a multipart message and reports which ones match.

$oMime = ObjCreate("Chilkat.Mime")
$bSuccess = $oMime.LoadMimeFile("qa_data/multipart_message.eml")
If ($bSuccess = False) Then
    ConsoleWrite($oMime.LastErrorText & @CRLF)
    Exit
EndIf

Local $iN = $oMime.NumParts
$oPart = ObjCreate("Chilkat.Mime")
Local $i
For $i = 0 To $iN - 1
    $bSuccess = $oMime.PartAt($i,$oPart)
    If ($bSuccess = False) Then
        ConsoleWrite($oMime.LastErrorText & @CRLF)
        Exit
    EndIf

    If ($oPart.IsPlainText()) Then
        ConsoleWrite("Part " & $i & " (" & $oPart.ContentType & ") is plain text." & @CRLF)
    EndIf

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