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c++qtqt4qtreeview

Selecting a row in QTreeView programmatically


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 select them via:

idx = treeview->model()->index(search); 
selection->select(idx, QItemSelectionModel::Select);

This selects a cell, not the row . .

Have added a stupid workaround, but would rather fix this the correct way.

for (int col=0; col< treeview->model()->columnCount(); col++) 
{ 
   idx = treeview->model()->index(search, col); 
   selection->select(idx, QItemSelectionModel::Select); 
} 

Or is that ^^ the only way to do it?


Solution

  • 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)