Using Qt Designer files in python script

Question

I need to open a dialog from login.py, then if successful, the dialog will close and open a main-window from home.py. I need to do this with a file created by Qt Designer with pyuic4. In summary, I need to call login.py and home.py though main.py.

Code of main.py:

from PyQt4 import QtGui, QtCore 
import sqlite3, time
from login import Ui_Dialog
from home import Ui_MainWindow

# Here I need to know how to call login.py, and
# after logged in, how to change to home.py

class RunApp():
    pass        

if __name__ == '__main__':

    app = QtGui.QApplication(sys.argv)
    window = RunApp()
    sys.exit(app.exec_())

Code of login.py:

class Ui_Dialog(object):
    def setupUi(self, Dialog):
        Dialog.setObjectName(_fromUtf8("Dialog"))
        Dialog.resize(194, 156)

Code of home.py:

class Ui_MainWindow(object):
    def setupUi(self, MainWindow):
        MainWindow.setObjectName(_fromUtf8("MainWindow"))
        MainWindow.resize(635, 396)
        MainWindow.setAutoFillBackground(False)

Update: Thanks my friends ;) Worked for me with this code:

# -*- coding: utf-8 -*-
from PyQt4 import QtGui, QtCore
from login import Ui_Dialog
from home import Ui_MainWindow
import sqlite3, time, sys, os

class MyLogin(QtGui.QDialog):
    def __init__(self):
        super().__init__()
        self.ui = Ui_Dialog()
        self.ui.setupUi(self)
        self.ui.buttonBox.accepted.connect(self.openHome)
    def openHome(self):
        ui2 = MyHome()
        ui2.show()
        ui2.exec_()


class MyHome(QtGui.QMainWindow):
    def __init__(self, parent=None):
        super().__init__(parent)
        self.ui2 = Ui_MainWindow()
        self.ui2.setupUi(self)

if __name__=='__main__':
    root = QtGui.QApplication(sys.argv)
    app = MyLogin()
    app.show()
    root.exec_()

Oliver · Accepted Answer · 2016-10-14T02:56:14.020

Create a class that derives from QWidget, and in its __init__ instantiate the ui class, then call setupUi(self) on it.

class RunApp():
    pass  

class MyDialog(QWidget):
    def __init__(self, parent=None):
        super().__init__()
        self.ui = Ui_Dialog()
        self.ui.setupUi(self)

# do same for Ui_MainWindow via class MyMainWindow(QWidget)
...

This is explained in

Qt docs (you'll have to do the usual C++ -> Python translation)
Qt examples for Designer (you'll have to do the usual C++ -> Python translation)
PyQt examples

score 0 · Answer 2 · answered Oct 13 '16 at 01:02

For login page of PyQt based application. i would suggest use QstackedWidget

Page1 in stackedwidget for login page

Page2 in stackwidget for home screen

all you need is a simple login function that will varify the user name and password and allow user to move to home screen.

you can change the current index to open home screen.

  self.stackedWidget.setCurrentIndex(1)

Using Qt Designer files in python script

2 Answers2