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GetExtension not working


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I can't get the GetExtension function to work. Can you tell me what I am 

doing wrong?

Sample code: (Using VC++, DLL, Latest service pack)

// Add the annotation extension

IAnnListPtr pAnnList;

pAnnList.CreateInstance(__uuidof(AnnotationX));

pChart->AddExtension((IUnknown*)pAnnList);

// Now try getting it back.

LPUNKNOWN pList;

HRESULT HR = pChart->raw_GetExtension("AnnotateX.AnnList", &pList);

HR now contains CO_E_CLASSSTRING ("Invalid class string.") I tried

"AnnotationX.AnnList" as well, since I saw the other post in this newgroup,

but I get the same HRESULT. What string should I be using?

Andrew Pane

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Merak Projects Ltd.

A Division of Schlumberger GeoQuest

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