List-centred table view: How to implement DND and moving rows.

[Debilski]

Yes, this is what I have done already. But the thing is, that it will copy the row several times and not just move it. How do I turn this off, then?

[Debilski]

Hmm. Ok, I have found a way to avoid the duplication. In my model, I added:

bool dropMimeData(const QMimeData *data, Qt::DropAction action,
                  int row, int column, const QModelIndex &parent) {
    return QAbstractTableModel::dropMimeData(data, action,
                                             row, 0, parent);
}

bool dropMimeData(const QMimeData *data, Qt::DropAction action,
                  int row, int column, const QModelIndex &parent) {
    return QAbstractTableModel::dropMimeData(data, action,
                                             row, 0, parent);
}

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Doesn’t look to smart to me, but it keeps the rows ‘aligned’ when dragging and dropping.

[wysota]

It basically depends on the drop action you perform. If the action is DropMove, you should remove the old item after the drop.