Queries the DMR asynchronously for its current audio volume level.
HRESULT GetVolumeAsync( [out] GetVolumeOperation **value );
- value [out]
Receives a reference to a GetVolumeOperation object that is used to get results from the asynchronous operation.
The method returns an HRESULT. Possible values include, but are not limited to, those in the following table.
The method succeeded.