gecko-dev/xpcom/base/nsInterfaceRequestorAgg.h
2012-05-21 12:12:37 +01:00

23 lines
910 B
C

/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef nsInterfaceRequestorAgg_h__
#define nsInterfaceRequestorAgg_h__
#include "nsIInterfaceRequestor.h"
/**
* This function returns an instance of nsIInterfaceRequestor that aggregates
* two nsIInterfaceRequestor instances. Its GetInterface method queries
* aFirst for the requested interface and will query aSecond only if aFirst
* failed to supply the requested interface. Both aFirst and aSecond may
* be null.
*/
extern nsresult
NS_NewInterfaceRequestorAggregation(nsIInterfaceRequestor *aFirst,
nsIInterfaceRequestor *aSecond,
nsIInterfaceRequestor **aResult);
#endif // !defined( nsInterfaceRequestorAgg_h__ )