IOpcPackage interface (msopc.h)
Represents a package and provides methods to access the package's parts and relationships.
Inheritance
The IOpcPackage interface inherits from the IUnknown interface. IOpcPackage also has these types of members:
Methods
The IOpcPackage interface has these methods.
| IOpcPackage::GetPartSet Gets a part set object that contains IOpcPart interface pointers. |
| IOpcPackage::GetRelationshipSet Gets a relationship set object that represents the Relationships part that stores package relationships. |
Remarks
To get a pointer to this interface, call either the IOpcFactory::CreatePackage or IOpcFactory::ReadPackageFromStream method.
Package relationships serve as an entry point to the package by links from the package to target resources. The target of a package relationship is often an important part described in the ECMA-376 OpenXML, 1st Edition, Part 2: Open Packaging Conventions (OPC) or by the package format designer.
For example, a package relationship can provide access to the Core Properties part that stores package metadata, or to a part containing format-specific data, where the part and data are described by the package designer. The Main Document part of the word processing OpenXML format is one such format-specific part. For more information about this part, see Part 1: Fundamentals in ECMA-376 OpenXML (https://www.ecma-international.org/publications-and-standards/standards/ecma-376/).
The definitive way to find a part of interest is by using a relationship type. Several steps are required; for details, see the Parts Overview and the Finding the Core Properties Part how-to task.
For more information about packages, see the Open Packaging Conventions Fundamentals and the OPC.
Thread Safety
Packaging objects are not thread-safe.
For more information, see the Getting Started with the Packaging API.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client | Windows 7 [desktop apps | UWP apps] |
| Minimum supported server | Windows Server 2008 R2 [desktop apps | UWP apps] |
| Target Platform | Windows |
| Header | msopc.h |
See also
External Resources
Getting Started with the Packaging API
Open Packaging Conventions Fundamentals
Overviews
Reference