void gz::on_pushButton_2_clicked()
{
static QSqlQueryModel *model = new QSqlQueryModel(ui->tableView);
model->setQuery(QString("select * from yggzinfo;"));
int column = model->columnCount(); //获得列数
int row = model->rowCount(); // 获得行数
QModelIndex index = model->index(column,row,QModelIndex());
ui->lineEdit->setText(index);
}
错误 no matching function for call to 'QLineEdit::setText(QMode|Index&)'
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