QTableWidget 删除单行 或者 多行

一、只删除一行

    int rowIndex = tableWidget->currentRow();
    if (rowIndex != -1){
        tableWidget->removeRow(rowIndex);
}

二、删除一行 或者 多行均能使用

 　　首先需要获得选区，可以用 QItemSelectionModel 和 QModelIndexList 实现

    QMessageBox *msg = new QMessageBox(tableWidget);
    msg->question(tableWidget, "warning", "Delete data can't restore, please confirm.", QMessageBox::Yes, QMessageBox::No);
    if (QMessageBox::Yes)
    {
        QItemSelectionModel  *selection = tableWidget->selectionModel();
        QModelIndexList indexList = selection->selectedIndexes();

        QMap<int, int> rowMap;
        foreach(QModelIndex index, indexList)
        {
            rowMap.insert(index.row(), 0);
        }

        QMapIterator<int, int> rowMapIterator(rowMap);
        rowMapIterator.toBack();
        while (rowMapIterator.hasPrevious())
        {
            rowMapIterator.previous();
            int rowToDel = rowMapIterator.key();
            tableWidget->removeRow(rowToDel);
            TABLE->deleteSample(rowToDel);
        }
    }