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Using COM viewers with C++

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Varith

Varith

Programmer
Jun 16, 2003
18
US
Has anybody called the enterprise 9 COM viewers from C++? Specifically I am trying to use CrystalReports.CrystalReportViewer's GetHtmlContent function. I pass it 2 IDispatch * (the request and response objects, passed from a web page) and a _variant_t set to VT_NULL for the session parameter. Doing this returns a 0x80070057 error ("The parameter is incorrect"). Does any one know which parameter it is complaining about?
 
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