Question

Note:

• No MFC
• No ATL
• Using Visual C++

While attempting a connection between the connection point and the caller’s sink, an E_NOTIMPL (0x80004001) was returned.

Illustrated below:

hresult = pConnection->Advise(                              pSinkUnk,                              &dwAdvise); 

Question:

• How did this occur?

Regards

Answer 1

According to MSDN, it states that connection points that only allow one connection can return E_NOTIMPL from its EnumConnections() method. Would it be possible that a connection has already been made for this connection point? Maybe this particular implementation returns E_NOTIMPL from Advise() in this case as well?