如何捕获QTreeView取消选择的事件？

class MyTreeView : public QTreeView
{
    Q_OBJECT
public:
    explicit MyTreeView(QWidget *parent = nullptr);

protected:
    void selectionChanged(const QItemSelection &selected, const QItemSelection &deselected) override;
};

void MyTreeView::selectionChanged(const QItemSelection &selected, const QItemSelection &deselected)
{
    QTreeView::selectionChanged(selected, deselected);

    // 处理取消选择的项
    QModelIndexList deselectedIndexes = deselected.indexes();
    foreach (const QModelIndex &index, deselectedIndexes) {
        // 执行相应的操作
    }
}

MyTreeView *treeView = new MyTreeView(this);
// 设置模型等相关属性