CODEWITHSUNDEEP
pythonpyqt5
niimet
niimet

Reputation: 113

How to show another window

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Im trying a transition from registerwindow to mainwindow and when we submit the window is automatically transit to mainwindow. There is only way to do this (at least for me) i have to import two python doc which named mainwindow.py and register.py, they are in same doc by the way.

This is the mainmenu.py

from PyQt5 import QtCore,QtGui,QtWidgets

from window.register import Ui_Form

class Ui_MainWindow(object):


def login(self):

    self.window = QtWidgets.QWidget()
    self.ui = Ui_Form()
    self.ui.setupUi(self.window)
    self.window.show()
    MainWindow.hide()

and this is register.py

from PyQt5 import QtCore, QtGui, QtWidgets

from window.mainmenu import Ui_MainWindow

import sqlite3

class Ui_Form(object):
def submit(self):
    sorgu2 = "Select * From users where nickname = ?"
    sorgu = "INSERT INTO users values(?,?)"
    self.cursor.execute(sorgu,(self.lineEdit.text(),self.lineEdit.text()))
    self.connect.commit()
    Form.hide()
    self.window2 = QtWidgets.QMainWindow()
    self.ui2 = Ui_MainWindow()
    self.ui2.setupUi(self.window2)
    self.window2.show()

Its supposed to be when i clicked to the button the register window will be hidden and mainmenu window will be show. Same thing for the mainmenu but the direct opposite

I know i am doing circular dependent imports but there is no other way but importing them to each other

Upvotes: 0

Views: 574

Answers (1)

furas
furas

Reputation: 142631

If second window will be QDialog then you can hide main window, use exec() for QDialog and main window will wait till you close QDialog, and when it returns to main window then you can show it again.

from PyQt5 import QtWidgets


class MainWindow(QtWidgets.QWidget):

    def __init__(self):
        super().__init__()

        self.button = QtWidgets.QPushButton("Show Second Window", self)
        self.button.clicked.connect(self.show_second_window)
        layout = QtWidgets.QVBoxLayout(self)
        layout.addWidget(self.button)

        self.show()

    def show_second_window(self):
        self.hide() # hide main window

        self.second = SecondWindow()
        self.second.exec() # will wait till you close second window

        self.show() # show main window again


class SecondWindow(QtWidgets.QDialog): # it has to be dialog

    def __init__(self):
        super().__init__()

        self.button = QtWidgets.QPushButton("Close It", self)
        self.button.clicked.connect(self.show_second_window)
        layout = QtWidgets.QVBoxLayout(self)
        layout.addWidget(self.button)

        self.show()

    def show_second_window(self):
        self.close() # go back to main window


app = QtWidgets.QApplication([])
main = MainWindow()
app.exec()

The other popular method is to create two widgets with all contents and replace widgets in one window.

from PyQt5 import QtWidgets


class MainWidget(QtWidgets.QWidget):

    def __init__(self, parent):
        super().__init__()

        self.parent = parent

        self.button = QtWidgets.QPushButton("Show Second Window", self)
        self.button.clicked.connect(self.show_second_window)
        layout = QtWidgets.QVBoxLayout(self)
        layout.addWidget(self.button)

        self.show()

    def show_second_window(self):
        self.close()
        self.parent.set_content("Second")


class SecondWidget(QtWidgets.QWidget):

    def __init__(self, parent):
        super().__init__()

        self.parent = parent

        self.button = QtWidgets.QPushButton("Close It", self)
        self.button.clicked.connect(self.show_second_window)
        layout = QtWidgets.QVBoxLayout(self)
        layout.addWidget(self.button)

        self.show()

    def show_second_window(self):
        self.close()
        self.parent.set_content("Main")


class MainWindow(QtWidgets.QWidget):

    def __init__(self):
        super().__init__()

        self.layout = QtWidgets.QVBoxLayout(self)

        self.set_content("Main")

        self.show()

    def set_content(self, new_content):
        if new_content == "Main":
            self.content = MainWidget(self)
            self.layout.addWidget(self.content)
        elif new_content == "Second":           
            self.content = SecondWidget(self)
            self.layout.addWidget(self.content)



app = QtWidgets.QApplication([])
main = MainWindow()
app.exec()

EDIT: Change window's content using QStackedLayout

from PyQt5 import QtWidgets


class FirstWidget(QtWidgets.QWidget):

    def __init__(self, parent=None):
        super().__init__(parent=parent)

        layout = QtWidgets.QVBoxLayout(self)

        self.button = QtWidgets.QPushButton("Show Second Stack", self)
        self.button.clicked.connect(self.change_stack)

        layout.addWidget(self.button)

    def change_stack(self):
        self.parent().stack.setCurrentIndex(1)


class SecondWidget(QtWidgets.QWidget):

    def __init__(self, parent=None):
        super().__init__(parent=parent)

        layout = QtWidgets.QVBoxLayout(self)

        self.button = QtWidgets.QPushButton("Show First Stack", self)
        self.button.clicked.connect(self.change_stack)

        layout.addWidget(self.button)

    def change_stack(self):
        self.parent().stack.setCurrentIndex(0)


class MainWindow(QtWidgets.QWidget):

    def __init__(self):
        super().__init__()

        self.stack = QtWidgets.QStackedLayout(self)

        self.stack1 = FirstWidget(self)
        self.stack2 = SecondWidget(self)

        self.stack.addWidget(self.stack1)
        self.stack.addWidget(self.stack2)

        self.show()



app = QtWidgets.QApplication([])
main = MainWindow()
app.exec()

Upvotes: 2

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