Removes a connection between a data object and an advisory sink that was set up through a previous call to IDataAdviseHolder::Advise. IDataAdviseHolder::Unadvise is typically called in the implementation of IDataObject::DUnadvise.
HRESULT Unadvise(
DWORD dwConnection //Connection to remove
);
Windows NT: Use version 3.1 or later.
Windows: Use Windows 95 or later.
Windows CE: Unsupported.
Header: Declared in objidl.h.
IDataAdviseHolder::Advise, IDataObject::DUnadvise