Generally, subclasses of this class provide functions to allow data to be stored and retrieved, and instances are attached to blocks of text using
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.
- class PySide2.QtGui.QTextBlockUserData¶
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