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IConnector::GetType method (devicetopology.h)

  • Article

The GetType method gets the type of this connector.

Syntax

HRESULT GetType(
  [out] ConnectorType *pType
);

Parameters

[out] pType

Pointer to a variable into which the method writes the connector type. The connector type is one of the following ConnectorType enumeration constants:

Unknown_Connector

Physical_Internal

Physical_External

Software_IO

Software_Fixed

Network

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 pType is NULL.

Remarks

A connector corresponds to a "pin" in kernel streaming (KS) terminology. The mapping of KS pins to connectors is as follows:

  • If the KS pin communication type is KSPIN_COMMUNICATION_SINK, KSPIN_COMMUNICATION_SOURCE, or KSPIN_COMMUNICATION_BOTH, then the connector type is Software_IO.
  • Else, if the pin is part of a physical connection between two KS filters (devices) in the same audio adapter or in different audio adapters, then the connector type is Software_Fixed.
  • Else, if the KS pin category is KSNODETYPE_SPEAKER, KSNODETYPE_MICROPHONE, KSNODETYPE_LINE_CONNECTOR, or KSNODETYPE_SPDIF_INTERFACE, the connector type is Physical_External.
  • Else, for a pin that does not meet any of the preceding criteria, the connector type is Physical_Internal.
For more information about KS pins, see the Windows DDK documentation.

For a code example that calls the GetType method, see the implementation of the SelectCaptureDevice function in Device Topologies.

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

See also

IConnector Interface