How to open multiple instances of one QDialog object in PyQt5? [duplicate] - python-3.x

Question

I'm using PyQt5 designer to make a little application. I mostly work with designer rather than building from scratch so this might be a silly question. Basically i have a main menu and a "create" button that when clicked will open up the other pyqt5 .py file (also created in designer) i have been working on.
So far i complied the ui files into .py files and imported the popup window that i want to be able to generate more than one of and then i use this code to some success:
I have not added any additonal code to the converted ui files excpect this function:
Here is some code from my mainmenu and popoutwindow .py files:
this is the setupUi being called from my file im trying to replicate
class BookPopout(object):
def setupUi(self, MainWindow):
MainWindow.setObjectName("MainWindow")
MainWindow.resize(772, 685)
self.centralwidget = QtWidgets.QWidget(MainWindow)
self.centralwidget.setObjectName("centralwidget")
self.lastNameLabel = QtWidgets.QLabel(self.centralwidget)
self.lastNameLabel.setGeometry(QtCore.QRect(20, 110, 60, 17))
self.lastNameLabel.setObjectName("lastNameLabel")
self.cityEntry = QtWidgets.QLineEdit(self.centralwidget)
self.cityEntry.setGeometry(QtCore.QRect(20, 310, 391, 27))
self.cityEntry.setReadOnly(True)
self.cityEntry.setObjectName("cityEntry")
self.bookTable = QtWidgets.QTableWidget(self.centralwidget)
self.bookTable.setGeometry(QtCore.QRect(470, 10, 281, 481))
font = QtGui.QFont()
font.setPointSize(7)
self.bookTable.setFont(font)
self.bookTable.setAutoFillBackground(False)
self.bookTable.setEditTriggers(QtWidgets.QAbstractItemView.NoEditTriggers)
self.bookTable.setRowCount(1)
self.bookTable.setColumnCount(1)
self.bookTable.setObjectName("bookTable")
item = QtWidgets.QTableWidgetItem()
self.bookTable.setItem(0, 0, item)
self.bookTable.horizontalHeader().setVisible(False)
self.bookTable.horizontalHeader().setCascadingSectionResizes(False)
self.bookTable.horizontalHeader().setDefaultSectionSize(100)
self.bookTable.horizontalHeader().setStretchLastSection(True)
self.addressLineOneEntry = QtWidgets.QLineEdit(self.centralwidget)
self.addressLineOneEntry.setGeometry(QtCore.QRect(20, 190, 391, 27))
self.addressLineOneEntry.setReadOnly(True)
self.addressLineOneEntry.setObjectName("addressLineOneEntry")
self.stateEntry = QtWidgets.QLineEdit(self.centralwidget)
self.stateEntry.setGeometry(QtCore.QRect(20, 380, 391, 27))
self.stateEntry.setReadOnly(True)
self.stateEntry.setObjectName("stateEntry")
self.firstNameEntry = QtWidgets.QLineEdit(self.centralwidget)
self.firstNameEntry.setGeometry(QtCore.QRect(20, 70, 391, 27))
self.firstNameEntry.setReadOnly(True)
self.firstNameEntry.setObjectName("firstNameEntry")
self.streetAddressLabel = QtWidgets.QLabel(self.centralwidget)
self.streetAddressLabel.setGeometry(QtCore.QRect(20, 170, 83, 17))
self.streetAddressLabel.setObjectName("streetAddressLabel")
self.streetAddressTwoLabel = QtWidgets.QLabel(self.centralwidget)
self.streetAddressTwoLabel.setGeometry(QtCore.QRect(20, 240, 220, 17))
self.streetAddressTwoLabel.setObjectName("streetAddressTwoLabel")
self.phoneNumberLabel = QtWidgets.QLabel(self.centralwidget)
self.phoneNumberLabel.setGeometry(QtCore.QRect(20, 480, 87, 17))
self.phoneNumberLabel.setObjectName("phoneNumberLabel")
self.addressLineTwoEntry = QtWidgets.QLineEdit(self.centralwidget)
self.addressLineTwoEntry.setGeometry(QtCore.QRect(20, 260, 391, 27))
self.addressLineTwoEntry.setReadOnly(True)
self.addressLineTwoEntry.setObjectName("addressLineTwoEntry")
self.phoneNumberEntry = QtWidgets.QLineEdit(self.centralwidget)
self.phoneNumberEntry.setGeometry(QtCore.QRect(20, 500, 391, 27))
self.phoneNumberEntry.setReadOnly(True)
self.phoneNumberEntry.setObjectName("phoneNumberEntry")
self.firstNameLabel = QtWidgets.QLabel(self.centralwidget)
self.firstNameLabel.setGeometry(QtCore.QRect(20, 40, 62, 17))
self.firstNameLabel.setObjectName("firstNameLabel")
self.cityLabel = QtWidgets.QLabel(self.centralwidget)
self.cityLabel.setGeometry(QtCore.QRect(20, 290, 23, 17))
self.cityLabel.setObjectName("cityLabel")
self.stateLabel = QtWidgets.QLabel(self.centralwidget)
self.stateLabel.setGeometry(QtCore.QRect(20, 350, 29, 17))
self.stateLabel.setObjectName("stateLabel")
self.zipEntry = QtWidgets.QLineEdit(self.centralwidget)
self.zipEntry.setGeometry(QtCore.QRect(20, 440, 391, 27))
self.zipEntry.setReadOnly(True)
self.zipEntry.setObjectName("zipEntry")
self.zipLabel = QtWidgets.QLabel(self.centralwidget)
self.zipLabel.setGeometry(QtCore.QRect(20, 410, 18, 17))
self.zipLabel.setObjectName("zipLabel")
self.emailEntry = QtWidgets.QLineEdit(self.centralwidget)
self.emailEntry.setGeometry(QtCore.QRect(20, 550, 391, 27))
self.emailEntry.setObjectName("emailEntry")
self.label = QtWidgets.QLabel(self.centralwidget)
self.label.setGeometry(QtCore.QRect(20, 530, 80, 17))
self.label.setObjectName("label")
self.confirmNewPersonButton = QtWidgets.QPushButton(self.centralwidget)
self.confirmNewPersonButton.setGeometry(QtCore.QRect(20, 590, 85, 27))
self.confirmNewPersonButton.setObjectName("confirmNewPersonButton")
self.lastNameEntry = QtWidgets.QLineEdit(self.centralwidget)
self.lastNameEntry.setEnabled(True)
self.lastNameEntry.setGeometry(QtCore.QRect(20, 130, 391, 27))
self.lastNameEntry.setText("")
self.lastNameEntry.setReadOnly(True)
self.lastNameEntry.setObjectName("lastNameEntry")
self.sortComboBox = QtWidgets.QComboBox(self.centralwidget)
self.sortComboBox.setGeometry(QtCore.QRect(500, 530, 101, 31))
self.sortComboBox.setObjectName("sortComboBox")
self.sortByLabel = QtWidgets.QLabel(self.centralwidget)
self.sortByLabel.setGeometry(QtCore.QRect(570, 500, 71, 31))
font = QtGui.QFont()
font.setPointSize(14)
self.sortByLabel.setFont(font)
self.sortByLabel.setObjectName("sortByLabel")
self.sortButton = QtWidgets.QPushButton(self.centralwidget)
self.sortButton.setGeometry(QtCore.QRect(600, 530, 111, 31))
font = QtGui.QFont()
font.setPointSize(14)
self.sortButton.setFont(font)
self.sortButton.setObjectName("sortButton")
self.addNewPersonButton = QtWidgets.QPushButton(self.centralwidget)
self.addNewPersonButton.setGeometry(QtCore.QRect(40, 10, 101, 27))
self.addNewPersonButton.setObjectName("addNewPersonButton")
self.editEntryButton = QtWidgets.QPushButton(self.centralwidget)
self.editEntryButton.setGeometry(QtCore.QRect(170, 10, 111, 27))
self.editEntryButton.setObjectName("editEntryButton")
self.confirmEditButton = QtWidgets.QPushButton(self.centralwidget)
self.confirmEditButton.setGeometry(QtCore.QRect(20, 590, 111, 27))
self.confirmEditButton.setObjectName("confirmEditButton")
self.deleteEntryButton = QtWidgets.QPushButton(self.centralwidget)
self.deleteEntryButton.setGeometry(QtCore.QRect(300, 10, 111, 27))
self.deleteEntryButton.setObjectName("deleteEntryButton")
self.sortByLabel_2 = QtWidgets.QLabel(self.centralwidget)
self.sortByLabel_2.setGeometry(QtCore.QRect(530, 570, 131, 31))
font = QtGui.QFont()
font.setPointSize(12)
self.sortByLabel_2.setFont(font)
self.sortByLabel_2.setObjectName("sortByLabel_2")
self.lineEdit = QtWidgets.QLineEdit(self.centralwidget)
self.lineEdit.setGeometry(QtCore.QRect(500, 600, 101, 31))
self.lineEdit.setObjectName("lineEdit")
self.sortButton_2 = QtWidgets.QPushButton(self.centralwidget)
self.sortButton_2.setGeometry(QtCore.QRect(600, 600, 111, 31))
font = QtGui.QFont()
font.setPointSize(14)
self.sortButton_2.setFont(font)
self.sortButton_2.setObjectName("sortButton_2")
MainWindow.setCentralWidget(self.centralwidget)
self.menubar = QtWidgets.QMenuBar(MainWindow)
self.menubar.setEnabled(True)
self.menubar.setGeometry(QtCore.QRect(0, 0, 772, 27))
self.menubar.setObjectName("menubar")
self.menuOpen = QtWidgets.QMenu(self.menubar)
self.menuOpen.setObjectName("menuOpen")
MainWindow.setMenuBar(self.menubar)
self.statusbar = QtWidgets.QStatusBar(MainWindow)
self.statusbar.setObjectName("statusbar")
MainWindow.setStatusBar(self.statusbar)
self.actionSave = QtWidgets.QAction(MainWindow)
self.actionSave.setObjectName("actionSave")
self.actionSave_as = QtWidgets.QAction(MainWindow)
self.actionSave_as.setObjectName("actionSave_as")
self.actionClose = QtWidgets.QAction(MainWindow)
self.actionClose.setObjectName("actionClose")
self.menuOpen.addAction(self.actionSave)
self.menuOpen.addSeparator()
self.menuOpen.addAction(self.actionSave_as)
self.menuOpen.addSeparator()
self.menuOpen.addAction(self.actionClose)
self.menubar.addAction(self.menuOpen.menuAction())
QtCore.QMetaObject.connectSlotsByName(MainWindow)
Here is my mainmenu py file:
class Ui_MainWindow(object):
def setupUi(self, MainWindow):
MainWindow.setObjectName("MainWindow")
MainWindow.resize(255, 410)
self.centralwidget = QtWidgets.QWidget(MainWindow)
self.centralwidget.setObjectName("centralwidget")
self.createNewBookButton = QtWidgets.QPushButton(self.centralwidget)
self.createNewBookButton.setGeometry(QtCore.QRect(40, 220, 171, 41))
self.createNewBookButton.setObjectName("createNewBookButton")
self.createNewBookButton.clicked.connect(self.openNewBook)
self.openExistingBookButton = QtWidgets.QPushButton(self.centralwidget)
self.openExistingBookButton.setGeometry(QtCore.QRect(40, 280, 171, 41))
self.openExistingBookButton.setObjectName("openExistingBookButton")
self.quitProgramButton = QtWidgets.QPushButton(self.centralwidget)
self.quitProgramButton.setGeometry(QtCore.QRect(40, 340, 171, 41))
self.quitProgramButton.setObjectName("quitProgramButton")
self.mainImage = QtWidgets.QGraphicsView(self.centralwidget)
self.mainImage.setGeometry(QtCore.QRect(10, 10, 231, 192))
self.mainImage.setObjectName("mainImage")
MainWindow.setCentralWidget(self.centralwidget)
self.statusbar = QtWidgets.QStatusBar(MainWindow)
self.statusbar.setObjectName("statusbar")
MainWindow.setStatusBar(self.statusbar)
QtCore.QMetaObject.connectSlotsByName(MainWindow)
def openNewBook(self):
self.popWin = QtWidgets.QMainWindow()
self.bookUI = bookPopout.BookPopout()
self.bookUI.setupUi(self.popWin)
self.popWin.show()
if __name__ == "__main__":
import sys
app = QtWidgets.QApplication(sys.argv)
MainWindow = QtWidgets.QMainWindow()
ui = Ui_MainWindow()
ui.setupUi(MainWindow)
MainWindow.show()
sys.exit(app.exec_())
This works great for opening up ONE extra window, which stays open while my main window is open which is what i want, but then when i go to click to make another window appear, it just replaces the one i already had up, so i can only seem to have one extra at a time.
I figure that my old window is being referenced by self.popWin , and then being replaced over and over so my question i guess is what is the best way to go about "generating" windows instead of just referencing the same window over and over.. i tried to remove the "self" part but then the window just dosent even appear when i go to create a new window so i am kind of lost
for example i would expect to be able to write something like this but im not really sure how to go about doing so
currentWindows = []
newPopWin = QtWidgets.QMainWindow()
newBookUI = BookPopout()
newBookUI.setupUi(newPopWin)
newPopWin.show()
currentWindows.append(newPopWin)
this would be ideal so i could keep track of all current open windows so i may terminate them all once i close my main menu.
Any help would be appreciated to put me on the right track, i have tried looking up solutions but lots of examples are not using code converted from a UI file.

Answer 1

The problem is simple, we are overwriting an attribute and at that moment the previous element is deleted, for that reason only a window. As you point out the solution is to store it in a list.
But before that, I recommend you not to write your logic in the .py generated by Qt Designer since for example let's say that you want to modify something of the design, then when generating the new .py it will erase all your logic. What PyQt recommends is to use create another file where you generate the logic adviritiendote with the message: # WARNING! All changes made in this file will be lost!. So restore the previous files I called bookPopup.py and mainmenu.py by removing the openNewBook. Following the docs recommendation we obtain the following:
main.py
from PyQt5 import QtCore, QtGui, QtWidgets
import bookPopout
import mainmenu
class BookPopoutWindow(QtWidgets.QMainWindow, bookPopout.BookPopout):
def __init__(self, parent=None):
super(BookPopoutWindow, self).__init__(parent)
self.setupUi(self)
class MainMenu(QtWidgets.QMainWindow, mainmenu.Ui_MainWindow):
def __init__(self, parent=None):
super(MainMenu, self).__init__(parent)
self.setupUi(self)
self.createNewBookButton.clicked.connect(self.openNewBook)
self.popups = []
#QtCore.pyqtSlot()
def openNewBook(self):
popWin = BookPopoutWindow()
popWin.show()
self.popups.append(popWin)
if __name__ == "__main__":
import sys
app = QtWidgets.QApplication(sys.argv)
w = MainMenu()
w.show()
sys.exit(app.exec_())

Answer 2

PyQt5 Opening Multiple Windows/Widgets and Closing them
import sys
from PyQt5.QtWidgets import QWidget, QPushButton, QApplication, QAction
import random
class Widget2(QWidget):
def __init__(self):
super().__init__()
w2btn = QPushButton('Another Widget ' +
str(random.randrange(5, 100, 5)), self)
w2btn.clicked.connect(self.w2btnclicked)
w2btn.resize(w2btn.sizeHint())
w2btn.move(50, 50)
def w2btnclicked(self):
print("Widget 2 btn clicked")
class Widget1(QWidget):
def __init__(self):
super().__init__()
self.start = 50
self.end = 50
quit = QAction("Quit", self)
quit.triggered.connect(self.close)
addbtn = QPushButton('Add Window', self)
addbtn.clicked.connect(self.addbtnclicked)
addbtn.resize(addbtn.sizeHint())
addbtn.move(50, 50)
quitbtn = QPushButton('Quit', self)
quitbtn.clicked.connect(QApplication.instance().quit)
quitbtn.resize(quitbtn.sizeHint())
quitbtn.move(50, 100)
self.popups = []
def addbtnclicked(self):
print("Add Button Clicked!!")
wdgt2 = Widget2()
wdgt2.show()
if self.start > 1600:
self.start = 50
self.end = self.end + 250
wdgt2.setGeometry(self.start, self.end, 200, 200)
self.popups.append(wdgt2)
self.start = self.start + 250
def closeEvent(self, event):
print("In Close Event")
QApplication.closeAllWindows()
def main():
app = QApplication(sys.argv)
ex = Widget1()
ex.show()
ex.setGeometry(800, 600, 200, 200)
sys.exit(app.exec_())
if __name__ == '__main__':
main()