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The CMediaPositionclass is a base class that handles the IDispatchmethods of the dual-interface IMediaPosition. It leaves the properties and methods as pure virtual.
The CMediaPosition::GetIDsOfNames, CMediaPosition::GetTypeInfo, CMediaPosition::GetTypeInfoCount, and CMediaPosition::Invokemethods are standard implementations of the IDispatchinterface using the CBaseDispatchclass (and a type library) to parse the commands and pass them to the pure virtual IMediaPositionmethods.
Member Functions
| CMediaPosition | Constructs a CMediaPositionobject. |
Implemented INonDelegatingUnknown Methods
| NonDelegatingQueryInterface | Returns a specified reference-counted interface. |
Implemented IDispatch Methods
| GetIDsOfNames | Maps a single member and an optional set of parameters to a corresponding set of integer dispatch identifiers, which can be used during subsequent calls to the CMediaPosition::Invokemember function. |
| GetTypeInfo | Retrieves a type-information object, which can retrieve the type information for an interface. |
| GetTypeInfoCount | Retrieves the number of type-information interfaces provided by an object. |
| Invoke | Provides access to properties and methods exposed by an object. |