IWMDMOperation Interface

The IWMDMOperation interface is used by the IWMDMStorageControl interface for data transfer and by the IWMDMDeviceControl interface for streaming audio data.

In addition to the methods inherited from IUnknown, the IWMDMOperation interface exposes the following methods.

Method	Description
BeginRead	Indicates that a read operation is being started by a method belonging to either the IWMDMStorageControl interface or the IWMDMDeviceControl interface.
BeginWrite	Indicates that a write operation is being started by a method belonging to either the IWMDMStorageControl interface or the IWMDMDeviceControl interface.
End	Indicates that a read or write operation is complete, whether successful or not, and returns a completion code.
GetObjectAttributes	Retrieves the content attributes. Audio attributes include the number of samples per second, the number of bytes per sample, and so on.
GetObjectName	Retrieves the name of the object (content) being read or written.
GetObjectTotalSize	Retrieves the total size of an object, in bytes.
SetObjectAttributes	Assigns the content attributes. Audio attributes include the number of samples per second, the number of bytes per sample, and so on.
SetObjectName	Assigns a name to the content being read or written.
SetObjectTotalSize	Assigns the total size of an object, in bytes.
TransferObjectData	Transfers a block of data.

See Also

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