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# QTextBlockUserData Class Reference
[QtGui module]

The QTextBlockUserData class is used to associate custom data with blocks of text. More...

### Methods

- __init__ (self)
- __init__ (self, QTextBlockUserData)

## Detailed Description

The QTextBlockUserData class is used to associate custom data with blocks of text.

QTextBlockUserData provides an abstract interface for container classes that are used to associate application-specific user data with text blocks in a QTextDocument.

Generally, subclasses of this class provide functions to allow data to be stored and retrieved, and instances are attached to blocks of text using QTextBlock.setUserData(). This makes it possible to store additional data per text block in a way that can be retrieved safely by the application.

Each subclass should provide a reimplementation of the destructor to ensure that any private data is automatically cleaned up when user data objects are deleted.

See also QTextBlock.

## Method Documentation

### QTextBlockUserData.__init__ (self)

### QTextBlockUserData.__init__ (self, QTextBlockUserData)