QAbstractTextDocumentLayout.Selection 类是定义选定参数的方便类。
A selection can be used to specify a part of a document that should be highlighted when drawing custom layouts for QTextDocuments with the QAbstractTextDocumentLayout.draw() function. It is specified using cursor 和 format .
| 参数： | Selection – PySide.QtGui.QAbstractTextDocumentLayout::Selection |
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