IAudioInputSelector::GetSelection method

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

Syntax


HRESULT GetSelection(
  [out] UINT *pnIdSelected
);

Parameters

pnIdSelected [out]

Pointer to a UINT variable into which the method writes the local ID of the part that directly links to the currently selected selector input.

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 codeDescription
E_POINTER

Pointer pnIdSelected is NULL.

 

Remarks

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.

Requirements

Minimum supported client

Windows Vista [desktop apps only]

Minimum supported server

Windows Server 2008 [desktop apps only]

Header

Devicetopology.h

See also

IAudioInputSelector Interface
IDeviceTopology::GetPartById
IPart Interface

 

 

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