I've created a simple custom QDialog with three QLineEdits. When clicking the "OK" button I want to read the entered text and return them to the MainWindow object where the values will be stored in a list.

How do I return the values from the QDialog class so I can store them in the list in the MainWindow class, and how do I call it properly?

This is the code I have at the moment:

Qt Code: 
  1. class MainWindow(QtGui.QMainWindow):
  2.  
  3.     deviceList = []
  4.  
  5.     def openAddDialog(self):
  6.         print "running openAddDialog..."
  7.         diag = AddDevice()
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Qt Code: 
  1. from PySide.QtGui import *
  2.  
  3. class AddDevice(QDialog):
  4.  
  5.     def __init__(self):
  6.         QDialog.__init__(self)
  7.         self.setWindowTitle("Add Device")
  8.         self.resize(400, 300)
  9.  
  10.         iLabel = QLabel("IPv4 address:")
  11.         self.iText = QLineEdit()
  12.  
  13.         uLabel = QLabel("Username:")
  14.         self.uText = QLineEdit()
  15.  
  16.         pLabel = QLabel("Password:")
  17.         self.pText = QLineEdit()
  18.  
  19.         okButton = QPushButton()
  20.         okButton.setText("OK")
  21.         okButton.clicked.connect(self.add)
  22.  
  23.         frame = QFrame(self)
  24.  
  25.         formLayout = QFormLayout(frame)
  26.         formLayout.addRow(iLabel, self.iText)
  27.         formLayout.addRow(uLabel, self.uText)
  28.         formLayout.addRow(pLabel, self.pText)
  29.         formLayout.addRow(okButton, okButton)
  30.  
  31.         self.exec_()
  32.  
  33.     def add(self):
  34.         ipv4 = self.iText.text()
  35.         username = self.uText.text()
  36.         password = self.pText.text()
  37.  
  38.         print ipv4, username, password
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