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Document how opacity affects QGraphicsScene item queries.
Currently, QGraphicsScene::items() and related functions only return items that are visible. The definition of visible effectively means any item for whom isVisible() returns false or opacity() returns 0.0. However, this is not documented anywhere. Also fixed some typos/grammatical errors. Change-Id: Ia6d1f7d63024dc9412438fe97748d7a69ee8225b Reviewed-by: Qt Doc Bot <qt_docbot@qt-project.org> Reviewed-by: Thomas McGuire <thomas.mcguire@kdab.com> Reviewed-by: Andreas Aardal Hanssen <andreas@hanssen.name> Reviewed-by: Geir Vattekar <geir.vattekar@nokia.com>
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Mitch Curtis
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Qt by Nokia
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Sep 7, 2012
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