Bdtjtk

For reference purpose consider the above example.

On the left I have two buttons PAGE1 and PAGE2 and on the right I have a QStackedWidget consisting of two widgets.

I made two seperate UI files with names page1.ui and page2.ui

I used "Promote Widget" to add page1.ui and page2.ui inside my stacked widget.
(See the image for reference)

The following is structure of my files:


├── main.py
├── pages
│ ├── page1.py
│ ├── page2.py
└── ui
├── main.ui
├── page1.ui
├── page2.ui


What I would like to achieve is that I am able to change the Index of Stacked Widget from a Widget inside Stacked Widget.

Currently I am only able to change Index of Stacked Widget by using buttons in main.ui.

CODE:
main.py

import os

from PyQt5 import QtGui, uic, QtWidgets

from functools import partial





current_dir = os.path.dirname(os.path.abspath(__file__))

Form, Base = uic.loadUiType(os.path.join(current_dir, "ui/main.ui"))



class MainWidget(Base, Form):

    def __init__(self, parent=None):

        super(self.__class__, self).__init__(parent)

        self.setupUi(self)

        buttons = (self.page1Button, self.page2Button)

        for i, button in enumerate(buttons):

            button.clicked.connect(partial(self.stackedWidget.setCurrentIndex, i))







if __name__ == '__main__':

    import sys

    app = QtWidgets.QApplication.instance()

    if app is None:

        app = QtWidgets.QApplication(sys.argv)



    app.setStyle("fusion")

    w = MainWidget()

    w.show()

    sys.exit(app.exec_())

page1.py:

import os

from PyQt5 import QtGui, uic, QtWidgets



current_dir = os.path.dirname(os.path.abspath(__file__))

Form, Base = uic.loadUiType(os.path.join(current_dir, "../ui/page1.ui"))



class page1Window(Base, Form):

    def __init__(self, parent=None):

        super(self.__class__, self).__init__(parent)

        self.setupUi(self)





if __name__ == '__main__':

    import sys

    app = QtWidgets.QApplication(sys.argv)

    w = page1Window()

    w.show()

    sys.exit(app.exec_())

page2.py is similar to page1.py

Suppose I have a button in page1.ui, how do I use this button to change the index of Stacked Widget using this button?

If you feel I am missing anything or have doubt on what I exactly want to do please leave a comment.

Okay I managed to get it working. Turns out the solution was pretty straight forward

Here is what I did:
main.py:

import os

from PyQt5 import QtGui, uic, QtWidgets

from functools import partial





current_dir = os.path.dirname(os.path.abspath(__file__))

Form, Base = uic.loadUiType(os.path.join(current_dir, "ui/main.ui"))



class MainWidget(Base, Form):

    def __init__(self, parent=None):

        super(self.__class__, self).__init__(parent)

        self.setupUi(self)

        buttons = (self.page1Button, self.page2Button)

        for i, button in enumerate(buttons):

            button.clicked.connect(partial(self.stackedWidget.setCurrentIndex, i))





        self.page_1.pushButton.clicked.connect(self.foo)

        #the above line calls foo() inside main.py when a button on page_1 is clicked







    def foo(self):

        # set stack widget to what ever you need

        self.stackedWidget.setCurrentIndex(1)





if __name__ == '__main__':

    import sys

    app = QtWidgets.QApplication.instance()

    if app is None:

        app = QtWidgets.QApplication(sys.argv)



    app.setStyle("fusion")

    w = MainWidget()

    w.show()

    sys.exit(app.exec_())