williamr@2: // Copyright (c) 1997-2009 Nokia Corporation and/or its subsidiary(-ies).
williamr@2: // All rights reserved.
williamr@2: // This component and the accompanying materials are made available
williamr@2: // under the terms of the License "Symbian Foundation License v1.0" to Symbian Foundation members and "Symbian Foundation End User License Agreement v1.0" to non-members
williamr@2: // which accompanies this distribution, and is available
williamr@2: // at the URL "http://www.symbianfoundation.org/legal/licencesv10.html".
williamr@2: //
williamr@2: // Initial Contributors:
williamr@2: // Nokia Corporation - initial contribution.
williamr@2: //
williamr@2: // Contributors:
williamr@2: //
williamr@2: // Description:
williamr@2: // This file contains the definition for the
williamr@2: // TImplementationProxy structure.
williamr@2: // 
williamr@2: //
williamr@2: 
williamr@2: 
williamr@2: 
williamr@2: #ifndef __IMPLEMENTATIONPROXY_H__
williamr@2: #define __IMPLEMENTATIONPROXY_H__
williamr@2: 
williamr@2: #include <e32std.h>
williamr@2: 
williamr@2: /**
williamr@2: Pre-defined function pointer type used in TImplementationProxy
williamr@2: 
williamr@2: @publishedAll
williamr@2: @released
williamr@2: */
williamr@2: typedef TAny* (*TFuncPtr)();
williamr@2: 
williamr@2: /**
williamr@2: Typedef used to cover the difference between EABI and older handling
williamr@2: of the instantiation method pointer.
williamr@2: 
williamr@2: @publishedAll
williamr@2: @released
williamr@2: */
williamr@2: #if  defined(__EABI__) || defined(__GCCXML__)
williamr@2: typedef TFuncPtr TProxyNewLPtr;
williamr@2: #else
williamr@2: typedef TAny* TProxyNewLPtr;
williamr@2: #endif
williamr@2: 
williamr@2: /**
williamr@2: The structure that defines the pairing required by the ECOM framework
williamr@2: to correctly identify the instantiation method pointer to provide
williamr@2: to a client's resolution request.
williamr@2: 
williamr@2: @publishedAll
williamr@2: @released
williamr@2: */
williamr@2: typedef struct
williamr@2: 	{
williamr@2: 	/** The unique UID for an Interface Implementation */
williamr@2: 	TUid	iImplementationUid;
williamr@2: 	/** The pointer to the instantiation method for the Interface Implementation identified by the UID.*/
williamr@2: 	TProxyNewLPtr iNewLFuncPtr;
williamr@2: 	} TImplementationProxy;
williamr@2: 
williamr@2: /**
williamr@2: Macro to initialise an element of a static array of TImplementationProxy objects.
williamr@2: This macro deals with casting the function pointer to the type used in the structure.
williamr@2: 
williamr@2: @publishedAll
williamr@2: @released
williamr@2: */
williamr@2: #define IMPLEMENTATION_PROXY_ENTRY(aUid, aFuncPtr)	{{aUid},(TProxyNewLPtr)(aFuncPtr)}
williamr@2: 
williamr@2: #endif	// __IMPLEMENTATIONPROXY_H__