Selecting a row in QTreeView programmatically

Question

I have a QTreeView with QFileSystemModel as model.

The QTreeView has SelectionBehavior set to SelectRows.

In my code I read a dataset to select and then sele

Answer 1

If you want to select a full row, you should use the following:

selection->select(idx, QItemSelectionModel::Select | QItemSelectionModel::Rows);

Note that you may sometimes first want to clear the selection:

selection->select(idx, QItemSelectionModel::ClearAndSelect | QItemSelectionModel::Rows);

Answer 2

You can also select an entire row using an QItemSelection:

selection->select (
    QItemSelection (
        treeview->model ()->index (search, 0),
        treeview->model ()->index (search, treeview->model ()->columnCount () - 1)),
    QItemSelectionModel::Select);

Also if you also want row selection for user clicks you need to set the selection behavior:

treeview->setSelectionBehavior (QAbstractItemView::SelectRows)