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How a QMainWindow can open a dialog?
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How a QMainWindow can open a dialog?
panoss
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Posts: 78
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Joined: Jan 2017
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#1
Feb-02-2022, 08:45 PM (This post was last modified: Feb-02-2022, 08:45 PM by panoss.)
I have the following code which has two classes:
-Ui_dialog_in
-myWindow

What I 'm trying to achieve is:
-when myWindow opens, to open a Ui_dialog_in

What must I change - add?

from PyQt6 import QtCore, QtGui, QtWidgets
from PyQt6.QtWidgets import QMainWindow, QHBoxLayout, QWidget
from PySide6.QtWidgets import QApplication

class Ui_dialog_in(object):
    def setupUi(self, dialog_in):
        dialog_in.setObjectName("dialog_in")
        dialog_in.resize(400, 146)
        self.verticalLayout_3 = QtWidgets.QVBoxLayout(dialog_in)
        self.verticalLayout_3.setObjectName("verticalLayout_3")
        self.verticalLayout_2 = QtWidgets.QVBoxLayout()
        self.verticalLayout_2.setObjectName("verticalLayout_2")
        self.verticalLayout = QtWidgets.QVBoxLayout()
        self.verticalLayout.setObjectName("verticalLayout")
        self.horizontalLayout_2 = QtWidgets.QHBoxLayout()
        self.horizontalLayout_2.setObjectName("horizontalLayout_2")
        self.titleLabel = QtWidgets.QLabel(dialog_in)
        self.titleLabel.setObjectName("titleLabel")
        self.horizontalLayout_2.addWidget(self.titleLabel)
        self.titleEdit = QtWidgets.QLineEdit(dialog_in)
        self.titleEdit.setObjectName("titleEdit")
        self.horizontalLayout_2.addWidget(self.titleEdit)
        self.horizontalLayout_2.setStretch(0, 1)
        self.horizontalLayout_2.setStretch(1, 4)
        self.verticalLayout.addLayout(self.horizontalLayout_2)
        self.horizontalLayout_3 = QtWidgets.QHBoxLayout()
        self.horizontalLayout_3.setObjectName("horizontalLayout_3")
        self.authorLabel = QtWidgets.QLabel(dialog_in)
        self.authorLabel.setObjectName("authorLabel")
        self.horizontalLayout_3.addWidget(self.authorLabel)
        self.authorNameCombo = QtWidgets.QComboBox(dialog_in)
        self.authorNameCombo.setObjectName("authorNameCombo")
        self.horizontalLayout_3.addWidget(self.authorNameCombo)
        self.horizontalLayout_3.setStretch(0, 1)
        self.horizontalLayout_3.setStretch(1, 4)
        self.verticalLayout.addLayout(self.horizontalLayout_3)
        spacerItem = QtWidgets.QSpacerItem(20, 40, QtWidgets.QSizePolicy.Policy.Minimum, QtWidgets.QSizePolicy.Policy.Expanding)
        self.verticalLayout.addItem(spacerItem)
        self.horizontalLayout = QtWidgets.QHBoxLayout()
        self.horizontalLayout.setObjectName("horizontalLayout")
        spacerItem1 = QtWidgets.QSpacerItem(40, 20, QtWidgets.QSizePolicy.Policy.Expanding, QtWidgets.QSizePolicy.Policy.Minimum)
        self.horizontalLayout.addItem(spacerItem1)
        self.okButton = QtWidgets.QPushButton(dialog_in)
        self.okButton.setObjectName("okButton")
        self.horizontalLayout.addWidget(self.okButton)
        self.pushButton = QtWidgets.QPushButton(dialog_in)
        self.pushButton.setObjectName("pushButton")
        self.horizontalLayout.addWidget(self.pushButton)
        self.verticalLayout.addLayout(self.horizontalLayout)
        self.verticalLayout_2.addLayout(self.verticalLayout)
        self.verticalLayout_3.addLayout(self.verticalLayout_2)

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

    def retranslateUi(self, dialog_in):
        _translate = QtCore.QCoreApplication.translate
        dialog_in.setWindowTitle(_translate("dialog_in", "Dialog"))
        self.titleLabel.setText(_translate("dialog_in", "Title"))
        self.authorLabel.setText(_translate("dialog_in", "Author"))
        self.okButton.setText(_translate("dialog_in", "PushButton"))
        self.pushButton.setText(_translate("dialog_in", "PushButton"))



class myWindow(QMainWindow):
    """A window to show the books available"""
    def __init__(self, parent=None):
        """Initializer."""
        super().__init__(parent)
        self.setWindowTitle("My title")
        self.resize(550, 250)
        self.centralWidget = QWidget()
        self.setCentralWidget(self.centralWidget)
        self.layout = QHBoxLayout()
        self.centralWidget.setLayout(self.layout)
        #self.setupUI()
        # open second window, myDialog
        myDialog = Ui_dialog_in()


if __name__ == "__main__":
    app = QApplication([])
    import sys
    window = myWindow()
    window.resize(800, 600)
    window.show()
    sys.exit(app.exec())
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Axel_Erfurt
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Posts: 988
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#2
Feb-02-2022, 09:00 PM
You have mixed PyQt6 and PySide6

A simple Dialog Example

import sys

from PyQt6.QtWidgets import QApplication, QDialog, QMainWindow, QPushButton


class MainWindow(QMainWindow):
    def __init__(self):
        super().__init__()

        self.setWindowTitle("App")

        button = QPushButton("Click me")
        button.clicked.connect(self.button_clicked)
        self.setCentralWidget(button)

    def button_clicked(self, s):
        print("click", s)

        dlg = QDialog(self)
        dlg.setWindowTitle("Hallo!")
        dlg.exec()


app = QApplication(sys.argv)

window = MainWindow()
window.show()

app.exec()
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panoss
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Posts: 78
Threads: 27
Joined: Jan 2017
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#3
Feb-02-2022, 09:32 PM (This post was last modified: Feb-02-2022, 09:32 PM by panoss.)
It was so simple, this is embarashing Big Grin .

What if I want the second form to derive from 'object'? 'class Ui_dialog_in(object):'
(because this is what is produced by pyuic6)
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Axel_Erfurt
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Posts: 988
Threads: 15
Joined: Dec 2016
Reputation: 54
#4
Feb-03-2022, 01:41 PM
Use a window, and if you want to learn something don't use the designer.

from PyQt6 import QtCore, QtGui, QtWidgets
from PyQt6.QtWidgets import (QMainWindow, QHBoxLayout, 
                             QWidget, QApplication, QPushButton)
 
class Ui_dialog_in(QMainWindow):
    def __init__(self, parent = None):
        super(Ui_dialog_in, self).__init__(parent)
        
    def setupUi(self, parent=None):
        self.setObjectName("self")
        self.resize(400, 146)
        self.verticalLayout_3 = QtWidgets.QVBoxLayout()
        self.verticalLayout_3.setObjectName("verticalLayout_3")
        self.verticalLayout_2 = QtWidgets.QVBoxLayout()
        self.verticalLayout_2.setObjectName("verticalLayout_2")
        self.verticalLayout = QtWidgets.QVBoxLayout()
        self.verticalLayout.setObjectName("verticalLayout")
        self.horizontalLayout_2 = QtWidgets.QHBoxLayout()
        self.horizontalLayout_2.setObjectName("horizontalLayout_2")
        self.titleLabel = QtWidgets.QLabel(self)
        self.titleLabel.setObjectName("titleLabel")
        self.horizontalLayout_2.addWidget(self.titleLabel)
        self.titleEdit = QtWidgets.QLineEdit(self)
        self.titleEdit.setObjectName("titleEdit")
        self.horizontalLayout_2.addWidget(self.titleEdit)
        self.horizontalLayout_2.setStretch(0, 1)
        self.horizontalLayout_2.setStretch(1, 4)
        self.verticalLayout.addLayout(self.horizontalLayout_2)
        self.horizontalLayout_3 = QtWidgets.QHBoxLayout()
        self.horizontalLayout_3.setObjectName("horizontalLayout_3")
        self.authorLabel = QtWidgets.QLabel(self)
        self.authorLabel.setObjectName("authorLabel")
        self.horizontalLayout_3.addWidget(self.authorLabel)
        self.authorNameCombo = QtWidgets.QComboBox(self)
        self.authorNameCombo.setObjectName("authorNameCombo")
        self.horizontalLayout_3.addWidget(self.authorNameCombo)
        self.horizontalLayout_3.setStretch(0, 1)
        self.horizontalLayout_3.setStretch(1, 4)
        self.verticalLayout.addLayout(self.horizontalLayout_3)
        spacerItem = QtWidgets.QSpacerItem(20, 40, QtWidgets.QSizePolicy.Policy.Minimum, QtWidgets.QSizePolicy.Policy.Expanding)
        self.verticalLayout.addItem(spacerItem)
        self.horizontalLayout = QtWidgets.QHBoxLayout()
        self.horizontalLayout.setObjectName("horizontalLayout")
        spacerItem1 = QtWidgets.QSpacerItem(40, 20, QtWidgets.QSizePolicy.Policy.Expanding, QtWidgets.QSizePolicy.Policy.Minimum)
        self.horizontalLayout.addItem(spacerItem1)
        self.okButton = QtWidgets.QPushButton(self)
        self.okButton.setObjectName("okButton")
        self.horizontalLayout.addWidget(self.okButton)
        self.pushButton = QtWidgets.QPushButton(self)
        self.pushButton.setObjectName("pushButton")
        self.horizontalLayout.addWidget(self.pushButton)
        self.verticalLayout.addLayout(self.horizontalLayout)
        self.verticalLayout_2.addLayout(self.verticalLayout)
        self.verticalLayout_3.addLayout(self.verticalLayout_2)
 
        self.retranslateUi(self)
        QtCore.QMetaObject.connectSlotsByName(self)
        central_widget = QWidget()
        central_widget.setLayout(self.verticalLayout_3)
        self.setCentralWidget(central_widget)
        self.show()

 
    def retranslateUi(self, dialog_in):
        _translate = QtCore.QCoreApplication.translate
        dialog_in.setWindowTitle(_translate("dialog_in", "Dialog"))
        self.titleLabel.setText(_translate("dialog_in", "Title"))
        self.authorLabel.setText(_translate("dialog_in", "Author"))
        self.okButton.setText(_translate("dialog_in", "PushButton"))
        self.pushButton.setText(_translate("dialog_in", "PushButton"))
 
 
 
class myWindow(QMainWindow):
    def __init__(self, parent = None):
        super(myWindow, self).__init__(parent)
        self.setWindowTitle("App")
        self.resize(550, 250)
        self.central_widget = QWidget()
        self.setCentralWidget(self.central_widget)
        self.layout = QHBoxLayout()
        button = QPushButton("Open WIndow")
        button.clicked.connect(self.button_clicked)
        self.layout.addWidget(button)
        self.central_widget.setLayout(self.layout)
 
    def button_clicked(self):
        self.dlg = Ui_dialog_in()
        self.dlg.setupUi()
 
 
if __name__ == "__main__":
    app = QApplication([])
    import sys
    window = myWindow()
    window.resize(200, 100)
    window.show()
    sys.exit(app.exec())
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panoss
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Posts: 78
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Joined: Jan 2017
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#5
Feb-03-2022, 04:33 PM
I found it, thanks!

from PyQt6 import QtCore, QtGui, QtWidgets
from PyQt6.QtWidgets import QMainWindow, QPushButton, QDialog, QApplication, QVBoxLayout
from PyQt6.QtWidgets import QMainWindow, QHBoxLayout, QWidget
from PyQt6.QtWidgets import QApplication




class myWindow(QMainWindow):
    """A window to show the books available"""
    def __init__(self, parent=None):
        """Initializer."""
        super().__init__(parent)
        self.setWindowTitle("My title")
        self.resize(550, 250)
        self.centralWidget = QWidget()
        self.setCentralWidget(self.centralWidget)
        self.layout = QHBoxLayout()
        self.centralWidget.setLayout(self.layout)
        #self.setupUI()
        # open second window, myDialog
        button = QPushButton("Click me")
        button.clicked.connect(self.button_clicked)
        self.setCentralWidget(button)
    def button_clicked(self):
        myDialog = Dialog()
        myDialog.exec()


class Ui_dialog_in(object):
    def setupUi(self, dialog_in):
        dialog_in.setObjectName("dialog_in")
        dialog_in.resize(400, 146)
        self.verticalLayout_3 = QtWidgets.QVBoxLayout(dialog_in)
        self.verticalLayout_3.setObjectName("verticalLayout_3")
        self.verticalLayout_2 = QtWidgets.QVBoxLayout()
        self.verticalLayout_2.setObjectName("verticalLayout_2")
        self.verticalLayout = QtWidgets.QVBoxLayout()
        self.verticalLayout.setObjectName("verticalLayout")
        self.horizontalLayout_2 = QtWidgets.QHBoxLayout()
        self.horizontalLayout_2.setObjectName("horizontalLayout_2")
        self.titleLabel = QtWidgets.QLabel(dialog_in)
        self.titleLabel.setObjectName("titleLabel")
        self.horizontalLayout_2.addWidget(self.titleLabel)
        self.titleEdit = QtWidgets.QLineEdit(dialog_in)
        self.titleEdit.setObjectName("titleEdit")
        self.horizontalLayout_2.addWidget(self.titleEdit)
        self.horizontalLayout_2.setStretch(0, 1)
        self.horizontalLayout_2.setStretch(1, 4)
        self.verticalLayout.addLayout(self.horizontalLayout_2)
        self.horizontalLayout_3 = QtWidgets.QHBoxLayout()
        self.horizontalLayout_3.setObjectName("horizontalLayout_3")
        self.authorLabel = QtWidgets.QLabel(dialog_in)
        self.authorLabel.setObjectName("authorLabel")
        self.horizontalLayout_3.addWidget(self.authorLabel)
        self.authorNameCombo = QtWidgets.QComboBox(dialog_in)
        self.authorNameCombo.setObjectName("authorNameCombo")
        self.horizontalLayout_3.addWidget(self.authorNameCombo)
        self.horizontalLayout_3.setStretch(0, 1)
        self.horizontalLayout_3.setStretch(1, 4)
        self.verticalLayout.addLayout(self.horizontalLayout_3)
        spacerItem = QtWidgets.QSpacerItem(20, 40, QtWidgets.QSizePolicy.Policy.Minimum,
                                           QtWidgets.QSizePolicy.Policy.Expanding)
        self.verticalLayout.addItem(spacerItem)
        self.horizontalLayout = QtWidgets.QHBoxLayout()
        self.horizontalLayout.setObjectName("horizontalLayout")
        spacerItem1 = QtWidgets.QSpacerItem(40, 20, QtWidgets.QSizePolicy.Policy.Expanding,
                                            QtWidgets.QSizePolicy.Policy.Minimum)
        self.horizontalLayout.addItem(spacerItem1)
        self.okButton = QtWidgets.QPushButton(dialog_in)
        self.okButton.setObjectName("okButton")
        self.horizontalLayout.addWidget(self.okButton)
        self.pushButton = QtWidgets.QPushButton(dialog_in)
        self.pushButton.setObjectName("pushButton")
        self.horizontalLayout.addWidget(self.pushButton)
        self.verticalLayout.addLayout(self.horizontalLayout)
        self.verticalLayout_2.addLayout(self.verticalLayout)
        self.verticalLayout_3.addLayout(self.verticalLayout_2)

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

    def retranslateUi(self, dialog_in):
        _translate = QtCore.QCoreApplication.translate
        dialog_in.setWindowTitle(_translate("dialog_in", "Dialog"))
        self.titleLabel.setText(_translate("dialog_in", "Title"))
        self.authorLabel.setText(_translate("dialog_in", "Author"))
        self.okButton.setText(_translate("dialog_in", "PushButton"))
        self.pushButton.setText(_translate("dialog_in", "PushButton"))

class Dialog(QDialog, Ui_dialog_in):
    def __init__(self,parent=None):
        QDialog.__init__(self,parent)
        self.setupUi(self)

if __name__ == "__main__":
    app = QApplication([])
    import sys
    window = myWindow()
    window.resize(800, 600)
    window.show()
    sys.exit(app.exec())
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