Label Won't Update

Currently, I have some code that creates a QTableWidget. When you click on a QTableWidget cell, a label appears which shows the name of the item you clicked. Then, there is a menu button at the top which, when clicked, takes you back to the QTableWidget. I do this using QStackedWidgets, and everything works well the first time. However, the second time I click an item, the label doesn't change its text. For example, if the first time, I clicked a QTableWidget cell called "NUM 1", the label would appear with the text NUM 1. Then, I click the menu button. However, the second time when I click a different cell, such as "NUM 2", the label doesn't change and still shows NUM 1.

How could I fix this. I have tried using label.update(), but it doesn't work.

Here is my code:

from PyQt5 import QtWidgets, QtCore, QtGui  import sys    class MyWindow(QtWidgets.QMainWindow):        #Define The Init      def __init__(self):          super(MyWindow, self).__init__()            self.ID = ""          self.initUI()          self.setGeometry(200, 200, 1325, 955)            self.menuButton = QtWidgets.QLabel(self)          self.menuButton.setText("Menu")                        self.menuButton.mousePressEvent = self.GoToMenu            Central = QtWidgets.QWidget(self)          self.setCentralWidget(Central)            self.stack1 = QtWidgets.QWidget()          self.stack2 = QtWidgets.QWidget()            self.MainMenu()            self.Stack = QtWidgets.QStackedWidget(self)          self.Stack.addWidget(self.stack1)          self.Stack.addWidget(self.stack2)            vboxMain = QtWidgets.QVBoxLayout()            hbox = QtWidgets.QHBoxLayout(self)          hbox.addWidget(self.menuButton)          hbox.setAlignment(QtCore.Qt.AlignTop | QtCore.Qt.AlignCenter)            vboxMain.addLayout(hbox)          vboxMain.addWidget(self.Stack)            Central.setLayout(vboxMain)          self.Stack.setCurrentIndex(0)            def initUI(self):          pass        def MainMenu(self):          self.Table = QtWidgets.QTableWidget()            self.Table.setMouseTracking(True)            self.rowName = ["NUM 1", "NUM 2", "NUM 3", "NUM 4"]                    self.Table.setColumnCount(2)          self.Table.setRowCount(len(self.rowName))            self.verticalHeader = self.Table.verticalHeader()                    self.Table.verticalHeader().setVisible(False)                    self.Table.setFocusPolicy(QtCore.Qt.NoFocus)            self.horizontalHeader = self.Table.horizontalHeader()          self.horizontalHeader.setSectionResizeMode(0, QtWidgets.QHeaderView.Stretch)          self.horizontalHeader.setDefaultAlignment(QtCore.Qt.AlignLeft | QtCore.Qt.AlignVCenter)            self.Table.setHorizontalHeaderLabels(("Name;Point").split(";"))            for section in range(self.verticalHeader.count()):              self.Table.setItem(section, 0, QtWidgets.QTableWidgetItem(self.rowName[section]))            self.Table.cellClicked.connect(self.cell_was_clicked)            hboxList = QtWidgets.QHBoxLayout()          hboxList.addStretch()          hboxList.addWidget(self.Table)          hboxList.addStretch()            vboxMainMenu = QtWidgets.QVBoxLayout()          vboxMainMenu.addLayout(hboxList)          vboxMainMenu.addStretch()            self.stack1.setLayout(vboxMainMenu)        def GoToMenu(self, eve):          self.Stack.setCurrentIndex(0)        def cell_was_clicked(self, row, column):          self.ViewLabel(self.Table.item(row, 0).text())          self.Stack.setCurrentIndex(1)        def ViewLabel(self, IDL):                    self.lbl = QtWidgets.QLabel()          self.lbl.setText(IDL) ###...THE PROBLEM IS HERE...###            hboxShow = QtWidgets.QHBoxLayout()          hboxShow.addStretch()          hboxShow.addWidget(self.lbl)          hboxShow.addStretch()            vboxShow = QtWidgets.QVBoxLayout()          vboxShow.addLayout(hboxShow)            self.stack2.setLayout(vboxShow)    app = QtWidgets.QApplication(sys.argv)  win = MyWindow()    win.show()  sys.exit(app.exec_())  

https://stackoverflow.com/questions/65866146/label-wont-update January 24, 2021 at 08:55AM