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Sets the IDocHostUIHandler interface for MSHTML.
Syntax
HRESULT retVal = object.SetUIHandler(pUIHandler);
Parameters
pUIHandler [in]
Type: IDocHostUIHandlerA pointer to the host's IDocHostUIHandler interface.
Return value
Type: HRESULT
If this method succeeds, it returns S_OK. Otherwise, it returns an HRESULT error code.
Remarks
MSHTML releases its previous IDocHostUIHandler interface (if one is present) and calls the pUIHandler AddRef method.
Note When you call ICustomDoc::SetUIHandler, MSHTML also uses your implementation of the IOleCommandTarget interface to handle commands, such as Save As. If you do not handle the call to Exec, MSHTML uses its own handler.