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# QAccessibleEvent Class Reference
[com.trolltech.qt.gui module]

The `QAccessibleEvent` class is used to query addition accessibility information about complex widgets. More...

Inherits `QEvent`.

## Detailed Description

The `QAccessibleEvent` class is used to query addition accessibility information about complex widgets.

The event can be of type QEvent::AccessibilityDescription or QEvent::AccessibilityHelp.

Some `QAccessibleInterface` implementations send QAccessibleEvents to the widget they wrap to obtain the description or help text of a widget or of its children. The widget can answer by calling `setValue` with the requested information.

The default QWidget::event() implementation simply sets the text to be the widget's tooltip (for `AccessibilityDescription` event) or its "What's This?" text (for `AccessibilityHelp` event).