com:i-dispatch of the component of an ole-control-pane.
ole-control-i-dispatch returns the
com:i-dispatch (that is, the
IDispatch interface) of the component, or
nil if there isn't any. The
com:i-dispatch is the one that would be returned by
com:query-interface on the
CAPI User Guide and Reference Manual (Windows version) - 3 Aug 2017