ISpNotifySource::SetNotifySink

ISpNotifySource::SetNotifySink sets up the instance to make free-threaded notification calls through ISpNotifySink::Notify.

HRESULT SetNotifySink(
   ISpNotifySink  *pNotifySink
);

Parameters

pNotifySink: [in] Pointer to the notification interface. If pNotifySink is NULL, any current notification mechanism (notify sink, window message, callback, or Win32 event) is removed.

Return values

Value	Description
S_OK	Function completed successfully.
E_INVALIDARG	Interface pointer is invalid.
FAILED (hr)	Appropriate error message.

Remarks

If pNotifySink is NULL, any notification mechanism currently associated with this notify source is removed.

Because free-threaded notifications can occur on any thread, at any point during execution, they are extremely prone to deadlocks and re-entrance problems. See the documentation for ISpNotifySink for more details. Most applications will find one of the other notification mechanisms much easier to use.