Re: How to use this returned IDispatch interface?
In my project I want to export an ado connection interface and use it.
The code like this:
STDMETHODIMP CDBInterface::OpenDBConnect(IDispatch **pConnect)
*pConnect = (IDispatch*)pConn;
STDMETHODIMP CDBInterface::SQLQueryWitchConn(BSTR sql, IDispatch *pConnect,
CComObject<CATLRecordset>* pClsRecordset = NULL;
HRESULT hr = CComObject<CATLRecordset>::CreateInstance(&pClsRecordset);
hr = E_FAIL;
But av exception occurs when I try to create an _ConnectionPtr with returned
IDispatch interface. How can I fix this problem?
Thanks in advanced.
A _ConnectionPtr is a smart pointer, and I don't think it wraps anything
that is derived from IDispatch, nor does it have a conversion operator
for IDispatch *. What makes you believe this should be possible?
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