I would try

oObject = CREATEOBJECT("PDF417LIB.PDF")
* or 
oObject = CREATEOBJECT("PDF417LIB.PDF.1")
* but not
oObject = CREATEOBJECT("PDF471LIB.PDF")

>Hi,
>
>I am attempting to work with a new COM object and cannot figure out how to instantiate it within VFP. Here's some sample code for VB, but I've done everything that I know to get it to work:
>
>'Create a Visual Basic function to call the DLL from within your application
>Public Function EncPDF(DataToEncode As String, EcLevel As Integer, TotalColumns As Integer, TotalRows As Integer, Truncated As Integer, PDFMode As Integer, ApplyTilde As Integer) As String
> Dim PDF417FontEncoder As PDF417Lib.PDF
> Set PDF417FontEncoder = New PDF
> PDF417FontEncoder.FontEncode DataToEncode, EcLevel, TotalColumns, TotalRows, Truncated, PDFMode, ApplyTilde, EncPDF
>End Function
>
>I figured that the basic call would be as follows:
>oObject = CREATEOBJECT("PDF471LIB.PDF")
>
>That didn't work, so I looked further. The name of the file is IDAUTOMATIONPDF417.DLL. It is defined in the Object Browser as IDAutomationPDF417Barcode, so I tried each of the following:
>oObject = CREATEOBJECT("IDAUTOMATIONPDF417.PDF")
>oObject = CREATEOBJECT("IDAUTOMATIONPDF417BARCODE.PDF")
>
>None of the things I have done have worked. I have verified that the DLL is registered and it is working from within Access using the above example code.
>
>Can anyone help! Please!!!