Qt sqlite

MainWindow::MainWindow(QWidget *parent): QMainWindow(parent), ui(new Ui::MainWindow)
{
    ui->setupUi(this);
    
    model = new QSqlQueryModel(this);
    ui->tableView->setModel(model);
    ui->tableView->horizontalHeader()->setSectionResizeMode(QHeaderView::ResizeToContents);
    ui->tableView->horizontalHeader()->setStretchLastSection(true);
}

void MainWindow::on_btnOpen_clicked()
{
    openSqlite("xx数据库.db","x表");
}

bool MainWindow::openSqlite(QString &dbname, QString &table)
{
    QSqlDatabase db;
    if(db.contains("qt_sql_default_connection")) {
        db = QSqlDatabase::database("qt_sql_default_connection");
    } else {
        db= QSqlDatabase::addDatabase("QSQLITE");
        db.setDatabaseName(dbname);
        if(!db.open())   return false;
        char sql[512]={0};
        sprintf_s(sql, sizeof(sql), "SELECT a.name as '名称' FROM %s as a WHERE ...", table.toUtf8().data());
        model->setQuery(sql);
    }
    db.close();
    return true;
}

本文地址：https://blog.csdn.net/weixin_41799721/article/details/107411609