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InterfaceDefinition provides an example ECom interface definition. It declares a base class, CExampleInterface , from which implementations of the interface should derive.
CExampleInterface provides three NewL() functions that allow clients to get respectively:
the default implementation of the interface, using a specified custom resolver to determine what is the default
an implementation determined by the default resolver, using a specified string as a resolution parameter
an implementation determined by the default resolver, using a specified string as a resolution parameter, and passing some data to the implementation
CExampleInterface uses the overloads of REComSession::CreateImplementation(TUid, TUid &) to implement these functions.
CExampleInterface declares one pure virtual function, DoMethodL() , which supplies a service to the client. Implementations must implement this function.
InterfaceDefinition also provides an example of a custom resolver, called CExampleResolver . Its behaviour is the same as ECom's default resolver. Because a resolver is an implementation of the ECom CResolver interface, it requires a registration resource file ( 100098ea.rss ), and an exported factory table ( Proxy.cpp ).
Building InterfaceDefinition exports the files that contain the interface definition, Interface.h and Interface.inl , to epoc32\include\ ; produces a DLL ExampleResolver.dll ; and compiles a resource file ExampleResolver.rsc in the \resource\plugins\ directory.
Implementations of the interface are provided in the Interface Implementation example.
A client program that accesses the interface is provided in the Interface Client example.
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All rights reserved. Unless otherwise stated, these materials are provided under the terms of the Eclipse Public License v1.0.