IOpcUri::GetRelationshipsPartUri Method (Windows)

IOpcUri::GetRelationshipsPartUri Method

Gets the part name of the Relationships part that stores relationships that have the source URI represented by the current OPC URI object.

Syntax

HRESULT GetRelationshipsPartUri(
  [out, retval]  IOpcPartUri **relationshipPartUri
);

Parameters

relationshipPartUri [out]: A pointer to the IOpcPartUri interface of the part URI object that represents the part name of the Relationships part. The source URI of the relationships stored in this Relationships part is represented by the current OPC URI object.

Return Value

The method returns an HRESULT. Possible values include, but are not limited to, those in the following table.

Return code/value	Description
S_OK	The method succeeded.
E_POINTER	The relationshipPartUri parameter is NULL.
OPC_E_NONCONFORMING_URI 0x80510001	The current IOpcUri represents a Relationships part and cannot be the source of any relationships.
CreateUri function error	An HRESULT error code from the CreateUri function.
WinINet error	An HRESULT error code from a WinINet API.

Remarks

The following table shows Relationships part URIs for some OPC URIs.

OPC URI	Relationships Part Name	Return Value
/mydoc/images/picture.jpg	/mydoc/images/_rels/picture.jpg.rels	S_OK
/	/_rels/.rels	S_OK
/mydoc/images/_rels/picture.jpg.rels	Undefined	OPC_E_NONCONFORMING_URI

Support on Previous Windows Versions

The behavior and performance of this method is the same on all supported Windows versions. For more information, see Getting Started with the Packaging API, and >Platform Update for Windows Vista.

Thread Safety

Packaging objects are not thread-safe.

For more information, see the Getting Started with the Packaging API.

Requirements

Minimum supported client	Windows 7, Windows Vista with SP2 and Platform Update for Windows Vista
Minimum supported server	Windows Server 2008 R2, Windows Server 2008 with SP2 and Platform Update for Windows Server 2008
Header	Msopc.h
IDL	Opcparturi.idl