i have a sqlite database but i am tired to open this database my cod is below please help me .i am more tired
manager.pro
QT += sql
//////////////header//////////

#ifndef MANAGER_H
#define MANAGER_H

#include <QMainWindow>
#include <QWidget>
#include<QtGui>
#include <QtSql/QSqlDatabase>
//#include <QtSql/QSqlQueryModel>
#include<QtSql/QSqlQuery>
#include<QtSql/QSqlTableModel>



namespace Ui {
class Manager;
}

class Manager : public QMainWindow
{
Q_OBJECT
QSqlDatabase db;
QSqlQuery query;
public:
explicit Manager(QWidget *parent = 0);
~Manager();
bool createConnection();

private:
Ui::Manager *ui;
};

#endif // MANAGER_H


////////////////.cppp////////////////
#include "Manager.h"
#include "ui_manager.h"
#include<QDebug>
#include<qdebug.h>
#include<QtGui>
#include<QtGui>
#include <QtSql/QSqlDatabase>
//#include <QtSql/QSqlQueryModel>
#include<QtSql/QSqlQuery>
#include<QtSql/QSqlTableModel>



Manager::Manager(QWidget *parent) :
QMainWindow(parent),
ui(new Ui::Manager)
{
ui->setupUi(this);
createConnection();
LoadData();
}
bool Manager::createConnection()
{
db = QSqlDatabase::addDatabase("QSQLITE");
QSqlDatabase::addDatabase("C:/NokiaQtSDK/project/Manager","CabBookingDatabase.Sqlite");
db.setDatabaseName("CabBookingDatabase.sqlite");
if (!db.open()) {
QMessageBox::critical(0, qApp->tr("Cannot open database"),
qApp->tr("Unable to establish a database connection.\n"
"This program 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;
}
return true;
}
but my driver is not loaded please help me how to open sqlite database