IAudioOutputSelector::GetSelection method

The GetSelection method gets the local ID of the part that is connected to the selector output that is currently selected.


HRESULT GetSelection(
  UINT *pnIdSelected



Pointer to a UINT variable into which the method writes the local ID of the part that has a direct link to the currently selected selector output.

Return value

If the method succeeds, it returns S_OK. If it fails, possible return codes include, but are not limited to, the values shown in the following table.

Return code Description
Pointer pnIdSelected is NULL.


A local ID is a number that uniquely identifies a part among all parts in a device topology. To obtain a pointer to the IPart interface of a part from its local ID, call the IDeviceTopology::GetPartById method.


Minimum supported client Windows Vista [desktop apps only]
Minimum supported server Windows Server 2008 [desktop apps only]
Target Platform Windows
Header devicetopology.h

See also

IAudioOutputSelector Interface


IPart Interface