QTime time = QTime::currentTime(); 
QString str = time.toString(Qt::LocalDate);

QDir::currentPath()
QDir::homePAth()
QDir::rootPath()

myEdit->setText(QString::number(12, 10));

setWindowTitle();

QRegExpValidator *hexvalidator = new QRexExpValidator(QRegExp(0, 255, lineedit));

bc.setAttribute(Qt::WA_ShowModal, true);