Selection error with QTableWidget

[ivanicy]

Hello! I am trying to delete the selected rows in a QTableWidget.

When I select the first two rows by dragging like this:

and I press the delete button which has this code:

void PresetTourConfig::deleteSelectedPresetRows() {
    QModelIndexList selection( ui->tablePresets->selectionModel()->selectedRows() );

    for (int i = 0; i < selection.count(); i++) {
        QModelIndex index = selection.at(i);
        qDebug() << "Selection: " << index.data(0);
        ui->tablePresets->removeRow(index.row());
    }
}

The qDebug() shows this:

Selection:  QVariant(QString, "01")
Selection:  QVariant(QString, "03")

Does anyone know why this happens?

Thank you very much!!

[VRonin]

because QModelIndex is not QPersistentModelIndex

• selection will contain index(0,0) and index(1,0)
• ui->tablePresets->removeRow(index.row()); removes the first row but index(1,0) did not update so it is still pointing at row number 2 that now contains "03"

to solve, add std::sort(selection.begin(),selection.end(),[](const QModelIndex& left,const QModelIndex& right)->bool{return left.row()>right.row();}); before the for loop

[ivanicy]

@VRonin Wow! Thank you very much! I think I couldn't be able to solve this on my self!