QTableWidget生成空行后没法取cell值的缘由

判断cell内容为空， 能够这样实现：ide [cpp]  view plain  copy if(ui->tableWidget->item(i,j)==NULL||             //判断指向该cell的指针是否为空                (ui->tableWidget->item(i,j)&&                 ui->tableWidget->item(i

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