Compartir a través de

IConnector::GetConnectedTo

  • Artículo
Previous Next

IConnector::GetConnectedTo

The GetConnectedTo method gets the connector to which this connector is connected.

HRESULT GetConnectedTo(
  IConnector  **ppConTo
);

Parameters

ppConTo

[out] Pointer to a pointer variable into which the method writes the address of the IConnector interface of the other connector object. Through this method, the caller obtains a counted reference to the interface. The caller is responsible for releasing the interface, when it is no longer needed, by calling the interface's Release method. If the GetConnectedTo call fails, *ppConTo is NULL.

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 ppConTo is NULL.
E_NOTFOUND This connector is not connected, or the other side of the connection is not another device topology (for example, a Software_IO connection).
HRESULT_FROM_WIN32(ERROR_PATH_NOT_FOUND) The device topology on the other side of the connection is not active (that is, the device state is not DEVICE_STATE_ACTIVE).

For information about Software_IO connections, see ConnectorType Enumeration. For information about the HRESULT_FROM_WIN32 macro, see the Windows SDK documentation. For information about the DEVICE_STATE_NOTPRESENT device state, see DEVICE_STATE_XXX Constants.

Remarks

For code examples that call this method, see the implementations of the GetHardwareDeviceTopology and SelectCaptureDevice functions in Device Topologies.

Requirements

Client: Windows Vista

Header: Include Devicetopology.h.

See Also

Previous Next