IAudioInputSelector::GetSelection method (devicetopology.h)

Article
02/22/2024

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

[out] pnIdSelected

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 code	Description
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

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