Question

Qt tableWidget控件怎么将数据打印到相应的列中去

Answer 1

double dbVal = 23.157;
QTableWidgetItem *it = ui->tableWidget->item(row, col);
if (it==0)
{
    it=new QTableWidgetItem();
    ui->tableWidget->setItem(row, col, it);
}
it->setText(QString("%1").arg(dbVal, 3, 'f'));