Can't Debug when use SQL

With just the code i post here: http://www.qtcentre.org/threads/3533...-work-properly i can use the debug but now i add some functions to connect to a DB and insert data on it. Now i can's use the debug, i set breakpoins but the debugger never stop on it.

Code:

---

#ifndef MAINWINDOW_H
#define MAINWINDOW_H
 
#include <QtGui/QMainWindow>
#include <QProgressBar>
#include <QSqlDatabase>
 
class MainWindow : public QMainWindow
{
    Q_OBJECT
 
public:
    MainWindow(QWidget *parent = 0);
    ~MainWindow();
 
public slots:
    void test();
    void abortButtonClicked();
 
private:
    QProgressBar *progress;
    bool abortButtonFlag;
};
 
#endif // MAINWINDOW_H

---

Code:

---

#include "mainwindow.h"
#include <QDebug>
#include <QString>
#include <QDir>
#include <QFileDialog>
#include <QMessageBox>
#include <QLabel>
#include <QProgressBar>
#include <QLayout>
#include <QVBoxLayout>
#include <QTimer>
#include <QCoreApplication>
#include <QPushButton>
#include <QSqlDatabase>
#include <QSqlQuery>
#include <QSqlError>
 
MainWindow::MainWindow(QWidget *parent)
    : QMainWindow(parent)
{
 
    QVBoxLayout *layout = new QVBoxLayout;
    progress = new QProgressBar;
    layout->addWidget(progress);
 
    QPushButton *abortButton = new QPushButton("Abort");
    connect(abortButton, SIGNAL(clicked()), this, SLOT(abortButtonClicked()));
    layout->addWidget(abortButton);
 
    QWidget *w=new QWidget();
    w->setLayout(layout);
    this->setCentralWidget(w);
 
    abortButtonFlag = new bool;
    abortButtonFlag = false;
 
    QTimer::singleShot(100, this, SLOT(test()));
 
}
 
MainWindow::~MainWindow()
{
 
}
 
void MainWindow::test(){
 
    QSqlDatabase db = QSqlDatabase::addDatabase("QSQLITE");
    db.setDatabaseName("thomsonkeysDB");
 
    if (db.open()) {
        if (db.tables().indexOf("thomsonkeys") == -1) {
            QSqlQuery query(db);
            query.prepare("CREATE TABLE thomsonkeys (ssid VARCHAR(6), pass VARCHAR(10))");
            if (!query.exec())
                qCritical() << query.lastError();
        }
    } else {
        qCritical() << db.lastError();
    }
 
    QString dir = QFileDialog::getOpenFileName(this, tr("Select Text File"),"",tr("Text (*.txt)"));
    QFile f(dir);
    f.open(QIODevice::ReadOnly);
    if(f.isOpen())
    {
        int fileSize=f.size();
        int step=fileSize/100;
        int bytesProcessed=0;
        QString line;
        QStringList list;
        QSqlQuery query(db);
        progress->setMaximum(fileSize);
        progress->setValue(bytesProcessed);
        while ((not f.atEnd()) & (not abortButtonFlag)){
            line = f.readLine().data();
            bytesProcessed+= line.size();
            list = line.split(":");
            query.exec("insert into thomsonkeys values('"+list.at(0)+"', '"+list.at(1)+"')");
            if (bytesProcessed%step<=20){
                progress->setValue(bytesProcessed);
                QCoreApplication::processEvents();
            }
        }
        f.close();
        db.close();
        progress->setValue(bytesProcessed);
        progress->setEnabled(false);
    }
    else
    {
        QMessageBox::warning(this,"Error","No file selected!");
    }
}
 
void MainWindow::abortButtonClicked(){
    abortButtonFlag=true;
}

---