void DeleteAllFiles(const QString &path) 
{
 QDir oDir(path); 
 QStringList files = oDir.entryList(QDir::Files);
 
 QStringList::Iterator itFile = files.begin(); 
 while (itFile != 
		
		... 
		
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   QStateMachine* machine = new QStateMachine(this);
    QState* s1 = new QState(machine);
    QMouseEventTransition* mouseTrans =
   new QMouseEventTransition(ui->label, QEvent::MouseButtonRelease,
  Qt::LeftButton, s1);
    QObject::connect(mouseTrans, SIGNAL(triggered()), msgBox, SLOT(show()));
    machine->setInitialState(s1);
    machine->start();