Как подключиться к MySQL из Qt?

QT       += core gui sql

greaterThan(QT_MAJOR_VERSION, 4): QT += widgets

TARGET = BlackWoodWhip
TEMPLATE = app

DEFINES += QT_DEPRECATED_WARNINGS

SOURCES += \
        main.cpp \
        mainwindow.cpp

HEADERS += \
        mainwindow.h

FORMS += \
        mainwindow.ui

RESOURCES += \
    icons/IcoAll.qrc \
    icons/gui.qrc

CONFIG (debug, debug|release) {
    CONFIG       += console
}

#include "mainwindow.h"
#include <QApplication>
#include <QStyleFactory>

int main(int argc, char *argv[])
{
    QStringList paths = QCoreApplication::libraryPaths();
    paths.append(".");
    paths.append("imageformats");
    paths.append("platforms");
    paths.append("sqldrivers");
    QCoreApplication::setLibraryPaths(paths);

    QApplication::setOrganizationName( "FILTR-KTV" );
    QApplication::setOrganizationDomain( "filter-tv.ru" );
    QApplication::setApplicationName( "BlackWoodWhip" );

    QApplication a(argc, argv);
    QApplication::setStyle (QStyleFactory::create ("Fusion"));
    MainWindow w;
    w.show();

    return a.exec();
}

#ifndef MAINWINDOW_H
#define MAINWINDOW_H

#include <QMainWindow>
#include <QSqlDatabase>
#include <QSqlQuery>
#include <QSqlTableModel>


namespace Ui {
class MainWindow;
}

class MainWindow : public QMainWindow
{
    Q_OBJECT

public:
    explicit MainWindow(QWidget *parent = 0);
    ~MainWindow();

private:
    Ui::MainWindow *ui;
    QSqlDatabase db;
};

#endif // MAINWINDOW_H

#include "mainwindow.h"
#include "ui_mainwindow.h"
#include <QDebug>
#include <QtSql>
#include <QSqlError>
#include <QSqlRecord>


MainWindow::MainWindow(QWidget *parent) :
    QMainWindow(parent),
    ui(new Ui::MainWindow)
{
    ui->setupUi(this);

    qDebug() << QApplication::libraryPaths();

    //DATABASE MySQL
    db = QSqlDatabase::addDatabase("QMYSQL", "BWW");
    db.setHostName("127.0.0.1");
    db.setDatabaseName("blackwoodwhip");
    db.setUserName("root");
    db.setPassword("root");
    if (!db.open()){
        qDebug() << "Error";
    } else {
        qDebug() << "Ok";
    }
}

MainWindow::~MainWindow()
{
    delete ui;
}