IOpcSignatureCustomObject interface (msopc.h)
Represents an application-specific Object element that has been or will be signed.
Inheritance
The IOpcSignatureCustomObject interface inherits from the IUnknown interface. IOpcSignatureCustomObject also has these types of members:
Methods
The IOpcSignatureCustomObject interface has these methods.
| IOpcSignatureCustomObject::GetXml Gets the XML markup of an application-specific Object element. |
Remarks
An IOpcSignatureCustomObject interface pointer provides access to the XML markup of the Object element it represents. To access the XML markup of the Object element, call the IOpcSignatureCustomObject::GetXml method.
Serialized application-specific Object elements in signature markup can be added, removed, or modified by replacing the signature markup.
To replace signature markup, call the IOpcDigitalSignatureManager::ReplaceSignatureXml method. The caller must ensure that addition, deletion, or modification of application-specific Object elements does not break the signature.
To sign an application-specific Object element or a child of the element, create a reference to the element to be signed. Create the reference by calling the IOpcSignatureReferenceSet::Create method with the referenceUri parameter value set to "#" followed by the Id attribute value of the referenced element. For example, if the Id attribute of the referenced element is "Application", set referenceUri to "#Application".
To create an IOpcSignatureCustomObject interface pointer, call the IOpcSignatureCustomObjectSet::Create method.
To access an IOpcSignatureCustomObject interface pointer, call the IOpcSignatureCustomObjectEnumerator::GetCurrent method.
When a signature is generated, the markup of application-specific Object element is included in the signature markup.
Application-specific Object elements are not required for package signatures.
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
Getting Started with the Packaging API
IOpcSignatureCustomObjectEnumerator
Overviews
Packaging API Programming Guide
Packaging Digital Signature Interfaces
Reference