---
title: CFXMLDocumentTypeInfo
framework: Core Foundation
role: symbol
role_heading: Structure
path: corefoundation/cfxmldocumenttypeinfo
---

# CFXMLDocumentTypeInfo

Contains the external ID of the DTD.

## Declaration

```swift
struct CFXMLDocumentTypeInfo
```

## Overview

Overview A pointer to this structure is included in the CFXMLNode object passed to your application when the parser encounters the beginning of the DTD. Use the CFXMLNodeGetInfoPtr function to obtain a pointer to this structure.

## Topics

### Initializers

- [init()](corefoundation/cfxmldocumenttypeinfo/init().md)
- [init(externalID:)](corefoundation/cfxmldocumenttypeinfo/init(externalid:).md)

### Instance Properties

- [externalID](corefoundation/cfxmldocumenttypeinfo/externalid.md)

## Relationships

### Conforms To

- [BitwiseCopyable](swift/bitwisecopyable.md)

## See Also

### Data Types

- [CFXMLAttributeDeclarationInfo](corefoundation/cfxmlattributedeclarationinfo.md)
- [CFXMLAttributeListDeclarationInfo](corefoundation/cfxmlattributelistdeclarationinfo.md)
- [CFXMLDocumentInfo](corefoundation/cfxmldocumentinfo.md)
- [CFXMLElementInfo](corefoundation/cfxmlelementinfo.md)
- [CFXMLElementTypeDeclarationInfo](corefoundation/cfxmlelementtypedeclarationinfo.md)
- [CFXMLEntityInfo](corefoundation/cfxmlentityinfo.md)
- [CFXMLEntityReferenceInfo](corefoundation/cfxmlentityreferenceinfo.md)
- [CFXMLExternalID](corefoundation/cfxmlexternalid.md)
- [CFXMLNotationInfo](corefoundation/cfxmlnotationinfo.md)
- [CFXMLProcessingInstructionInfo](corefoundation/cfxmlprocessinginstructioninfo.md)