The GetPart method gets a part from the parts list.
HRESULT GetPart( UINT nIndex, IPart **ppPart );
[in] The part number of the part to retrieve. If the parts list contains n parts, the parts are numbered 0 to n – 1. Call the IPartsList::GetCount method to get the number of parts in the list.
[out] Pointer to a pointer variable into which the method writes the address of the IPart interface of the part object. Through this method, the caller obtains a counted reference to the IPart interface. The caller is responsible for releasing the interface, when it is no longer needed, by calling the interface's Release method. If the GetPart call fails, *ppPart is NULL.
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.
|E_INVALIDARG||Parameter nIndex is out of range.|
|E_POINTER||Pointer ppPart is NULL.|
For a code example that calls the GetPart method, see the implementation of the SelectCaptureDevice function in Device Topologies.
Client: Windows Vista
Header: Include Devicetopology.h.