connection.h

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#ifndef CONNECTION_H
#define CONNECTION_H

#include <QMessageBox>
#include <QSqlDatabase>
#include <QSqlError>
#include <QSqlQuery>
//#include <QDebug>

/*
    This file defines a helper function to open a connection to an
    in-memory SQLITE database and to create a test table.

    If you want to use another database, simply modify the code
    below. All the examples in this directory use this function to
    connect to a database.
*/
//! [0]
static bool createConnection()
{
    QSqlDatabase db = QSqlDatabase::addDatabase("QSQLITE");
    db.setDatabaseName("C:/Qt_Projects/Profiles_Project/db_test.db");
    if (!db.open()) {
        QMessageBox::critical(0, qApp->tr("Cannot open database"),
            qApp->tr("Unable to establish a database connection.\n"
                     "This example needs SQLite support. Please read "
                     "the Qt SQL driver documentation for information how "
                     "to build it.\n\n"
                     "Click Cancel to exit."), QMessageBox::Cancel);
        return false;
    }
    //qDebug()<<db.tables();
    return true;
}
//! [0]

#endif