How to connect slots in PyQt5 from another class

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How to connect slots in PyQt5 from another class

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#1 by (0 votes)

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I have generated a file gen_Principal.py from Principal.ui and since it should not be modified I created another class MyClass to connect the signals and slots there.

I want to open a window when I click on the menu. Currently the main window is displayed and does not give errors but does not open the new window.

Does anyone know what is happening? Thanks.

#Clase principal
from PyQt5 import QtGui, QtWidgets
from PyQt5.QtWidgets import QMainWindow, QApplication
from gen_principal import Ui_MainWindow
from gen_otra import Ui_Dialog

class MiClase(QMainWindow, Ui_MainWindow):
    def __init__(self):
        QMainWindow.__init__(self)
        self.setupUi(self)
        self.pushButton.clicked.connect(self.printSomething)
        self.actionclick_aqui_tambien.triggered.connect(self.abrirVentana)

    def printSomething(self):
        print("OK")

    def abrirVentana(self):
        print("Abriendo dialogo")
        self.window = QtWidgets.QDialog()
        self.ui = Ui_Dialog()
        self.ui.setupUi(self.window)
        self.window.show()


if __name__ == '__main__':
    import sys

    app = QApplication([])
    window = QMainWindow()
    main_window = Ui_MainWindow()
    main_window.setupUi(window)
    window.show()
    sys.exit(app.exec_())

#Clase generada
from PyQt5 import QtCore, QtGui, QtWidgets

class Ui_MainWindow(object):
    def setupUi(self, MainWindow):
        MainWindow.setObjectName("MainWindow")
        MainWindow.resize(382, 267)
        MainWindow.setMinimumSize(QtCore.QSize(382, 267))
        MainWindow.setMaximumSize(QtCore.QSize(382, 267))
        self.centralwidget = QtWidgets.QWidget(MainWindow)
        self.centralwidget.setObjectName("centralwidget")
        self.pushButton = QtWidgets.QPushButton(self.centralwidget)
        self.pushButton.setGeometry(QtCore.QRect(120, 60, 93, 28))
        self.pushButton.setObjectName("pushButton")
        MainWindow.setCentralWidget(self.centralwidget)
        self.menubar = QtWidgets.QMenuBar(MainWindow)
        self.menubar.setGeometry(QtCore.QRect(0, 0, 382, 26))
        self.menubar.setObjectName("menubar")
        self.menuClick_aqui_tambien = QtWidgets.QMenu(self.menubar)
        self.menuClick_aqui_tambien.setObjectName("menuClick_aqui_tambien")
        MainWindow.setMenuBar(self.menubar)
        self.statusbar = QtWidgets.QStatusBar(MainWindow)
        self.statusbar.setObjectName("statusbar")
        MainWindow.setStatusBar(self.statusbar)
        self.actionclick_aqui_tambien = QtWidgets.QAction(MainWindow)
     self.actionclick_aqui_tambien.setObjectName("actionclick_aqui_tambien")
        self.menuClick_aqui_tambien.addAction(self.actionclick_aqui_tambien)
        self.menubar.addAction(self.menuClick_aqui_tambien.menuAction())

        self.retranslateUi(MainWindow)
        QtCore.QMetaObject.connectSlotsByName(MainWindow)

    def retranslateUi(self, MainWindow):
    # ...

python pyqt5

asked by Jos 10.05.2018 в 14:57

source

1 answer

permissions root suexec Fill a listview with an API

score 0 · Answer 1

Your problem is in:

app = QApplication([])
window = QMainWindow()
main_window = Ui_MainWindow()
main_window.setupUi(window)

At no time are you creating an instance of MiClase that is your main window, you are creating an instance of Ui_MainWindow , without logic therefore.

You can simply do something like this:

from PyQt5 import QtGui, QtWidgets
from core.gen_principal2 import Ui_MainWindow
from core.gen_otra import Ui_Dialog



class MiDialog(QtWidgets.QDialog, Ui_Dialog):
    def __init__(self, *args, **kwargs):
        super(MiDialog, self).__init__(*args, **kwargs)
        self.setupUi(self)


class VentanaPrincipal(QtWidgets.QMainWindow, Ui_MainWindow):
    def __init__(self, *args, **kwargs):
        super(VentanaPrincipal, self).__init__(*args, **kwargs)
        self.setupUi(self)
        self.pushButton.clicked.connect(self.printSomething)
        self.actionclick_aqui_tambien.triggered.connect(self.abrirVentana)
        self.dialog = None

    def printSomething(self):
        print("OK")

    def abrirVentana(self):
        print("Abriendo dialogo")
        self.dialog = MiDialog(self)
        self.dialog.show()


if __name__ == '__main__':
    import sys

    app = QtWidgets.QApplication(sys.argv)
    main_window = VentanaPrincipal()
    main_window.show()
    sys.exit(app.exec_())

A class MiDialog is also created that inherits from Ui_Dialog and that you can use to implement the logic of this one.