IUNKOWN with ABBYY Finereader DISP_E_UNKNOWNNAME

HarrisonSsmny

Hi,
recently I acquired a Trial Version of ABBYY Finereader SDK (COM) and Installed it on our Server at work.
- The Task is to work with this SDK directly in Nav (No building addin a wrapper).
- Many things seem to be functioning well, except for one method "Export"

engine.Export(path,fileType,exportParams);

- "exportParams" is of type IUNKNOWN (in Nav), but actually it's a System.object
- possible object to be passed in "exportParams" are "RTFExportParams", "XMLExportParams".
- The dll has methods to create These objects, see below:

      // steps to create an "engine"
      XMLExportParams := engine.CreateXMLExportParams();
            //...
      engine.Export(path,fileType,XMLExportParams);

- Unfortunately, "Export" throws an exception (HRESULT: 0x80020006 (DISP_E_UNKNOWNNAME)) at runtime (It does compile successfully), due to the exportParams.
- I have already tried defining a VARIANT variable that i assign to the "XMLExportParams". .

    variantVariable :=XMLExportParams 

That did not solve it.
I understand IUnknown is the base type for COM Objects. So, Such a param should be able to accept any object type, but here it seem not to be the case.
Any Suggestions are Welcome.
Thanks

MBrodie1979

Hi Harrison.

Did you ever manage to solve this i have a similar error?