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Annotation GetExtension throwing exception


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I am trying to create a chart with an annotation toolbar dynamically.  I use 

the following code:

try

{

pAnnList = chartfx->GetExtension("AnnotationX.AnnList");

}

catch(...)

{

pAnnList.CreateInstance(__uuidof(AnnotationX));

HRESULT rs = chartfx->AddExtension((IUnknown *)pAnnList);

}

Everytime that I call a chart that does not have an annotation object, it

wil throw a C++ Exception. The Try Catch seems to handle it, but I was

wondering if this exception was normal for a GetExtension call?

--

--

Josh Eanes

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