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# ExtensionOption Class Reference
(QAbstractFileEngine::ExtensionOption)
[QtCore module]

provides an extended input argument to QAbstractFileEngine's extension support. More...

     #include <QAbstractFileEngine>

This class was introduced in Qt 4.3.

## Detailed Description

provides an extended input argument to QAbstractFileEngine's extension support.

See also QAbstractFileEngine::extension().