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These interfaces are optional and may be implemented by an application that uses Microsoft Windows Media Device Manager.
| Interface | Description |
| IWMDMNotification | Provides a method to pass the message type and its canonical name to the application. |
| IWMDMOperation | Callback interface used by the IWMDMStorageControl interface for data transfer. |
| IWMDMOperation2 | Extends IWMDMOperation by providing an End2 method that accepts a completion code. |
| IWMDMOperation3 | Extends IWMDMOperation by making it possible for more efficient transmission of DRM-enabled data. |
| IWMDMProgress | Used by the IWMDMStorageGlobals and IWMDMStorageControl interfaces for callback to track the progress of operations such as formatting media or transferring files to media storage. |
| IWMDMProgress2 | Extends IWMDMProgress by providing methods to get and set extended attributes. |
| IWMDMProgress3 | Extends IWMDMProgress2 interface by providing methods to allow passing more parameters into the corresponding methods. |
See Also