Is a QTreeView::sortByColumn() slot in QTreeView of Qt 5?

Question

In Qt docs http://doc.qt.io/qt-5/model-view-programming.html#model-subclassing-reference , it's said that, If your model is sortable, ie, if it reimplements the QAbstractItemModel::sort() function, both QTableView and QTreeView provide an API that allows you to sort your model data programmatically. In addition, you can enable interactive sorting (ie allowing the users to sort the data by clicking the view's headers), by connecting the QHeaderView::sortIndicatorChanged() signal to the QTableView::sortByColumn() slot or the QTreeView::sortByColumn() slot , respectively. However, the QTreeView::sortByColumn() is not a slot in QTreeView in Qt 5.4. Is there any thing wrong?The source code in Src/qtbase/src/widgets/itemviews/qtreeview.h shows that.

Answer 1

QTreeView::sortByColumn wasn't a slot before: http://qt-project.org/doc/qt-4.8-snapshot/qtreeview.html#sortByColumn

And QTreeView::sortByColumn isn't a slot now: http://doc.qt.io/qt-5/qtreeview.html#sortByColumn

There is nothing "wrong" with this implementation. The behavior of Qt 5 QTreeView will work exactly like a Qt 4 QTreeView with respect to sortByColumn .