How can I catch QTreeView deselected event?

How can I catch QTreeView deselected event?Is ther开发者_运维技巧e in QT this type event? Thanks

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QAbstractItemView::selectionModel() will return a pointer to the selection model of the view. That model fires a signal whenever the selection is changed, whether it's selected or deselected.

Connect the QItemSelectionModel::selectionChanged(const QItemSelection & selected, const QItemSelection & deselected) signal to a slot in your code, and deal with the deselected parameter.