#include <QCoreApplication>
#include <QSqlDatabase>

#include <future>

int main(int argc, char *argv[])
{
    QCoreApplication a(argc, argv);

    std::future<void> future = std::async(std::launch::async, [](){
        QSqlDatabase db = QSqlDatabase::addDatabase("QPSQL", "testPSQL");
        db.setDatabaseName( "postgres" );
        db.setHostName( "localhost");
        db.setPort( 5432 );
        db.setUserName( "postgres" );
        db.setPassword( "postgres" );
    });

    return a.exec();
}