Re: Why getting 'The value of ESP was not properly... debug error

"Igor Tandetnik" <>
Sun, 16 Jul 2006 11:27:19 -0400
"Angus Comber" <> wrote in message

"Igor Tandetnik" <> wrote in message

"Angus Comber" <> wrote in message

hr = schema->Query(query, (IDispatch**)&resultset);

resultset is like this:

CComQIPtr<ICOMQueryResultSet> resultset;

That's what I thought. You are effectively downcasting from IDispatch to
ICOMQueryResultSet. You cannot do that - you must use QueryInterface to
obtain one interface pointer from another. You need something like this:

CComPtr<IDispatch> resultsetDisp;
schema->Query(query, &resultsetDisp);
CComQIPtr<ICOMQueryResultSet> resultset = resultsetDisp;

With best wishes,
    Igor Tandetnik

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necessarily a good idea. It is hard to be sure where they are going to
land, and it could be dangerous sitting under them as they fly
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