Working with PyQt and Qt designer ui files

Question

I\'m new to PyQt and I\'m trying to work with ui files directly from within my PyQt script. I have two ui files, mainwindow.ui and landing.ui. Clicking on a button \'pushBut

Answer 1

There are two main problems with your script: firstly, you are not constructing the path to the ui files correctly; and secondly, you are not keeping a reference to the landing-page window (and so it will get garbage-collected immediately after it is shown).

Here is how the part of the script that loads the ui files should be structured:

import os
from PyQt4 import QtCore, QtGui, uic

# get the directory of this script
path = os.path.dirname(os.path.abspath(__file__))

MainWindowUI, MainWindowBase = uic.loadUiType(
    os.path.join(path, 'mainwindow.ui'))

LandingPageUI, LandingPageBase = uic.loadUiType(
    os.path.join(path, 'landing.ui'))

class MainWindow(MainWindowBase, MainWindowUI):
    def __init__(self, parent=None):
        MainWindowBase.__init__(self, parent)
        self.setupUi(self)
        self.pushButton.clicked.connect(self.handleButton)

    def handleButton(self):
        # keep a reference to the landing page
        self.landing = LandingPage()
        self.landing.show()

class LandingPage(LandingPageBase, LandingPageUI):
    def __init__(self, parent=None):
        LandingPageBase.__init__(self, parent)
        self.setupUi(self)