def pin_dialog(self, msg):
        d = QDialog(None)
        d.setModal(1)
        d.setWindowTitle(_("Enter PIN"))
        matrix = PinMatrixWidget()

        vbox = QVBoxLayout()
        vbox.addWidget(QLabel(msg))
        vbox.addWidget(matrix)
        vbox.addLayout(ok_cancel_buttons(d))
        d.setLayout(vbox)

        if not d.exec_(): return
        return str(matrix.get_value())

 def pin_dialog(self):
     d = QDialog(None)
     d.setModal(1)
     d.setWindowTitle(_("Enter PIN"))
     d.setWindowFlags(d.windowFlags() | QtCore.Qt.WindowStaysOnTopHint)
     matrix = PinMatrixWidget()
     vbox = QVBoxLayout()
     vbox.addWidget(QLabel(self.message))
     vbox.addWidget(matrix)
     vbox.addLayout(Buttons(CancelButton(d), OkButton(d)))
     d.setLayout(vbox)
     if not d.exec_():
         self.response = None
     self.response = str(matrix.get_value())
     self.done.set()