pyqt5 messagebox

In this article you will learn how to create a PyQt5 messagebox:

A message box is a class to show a small dialog with an ordinary message, an information message, or a question and it can confirm one or two choices.

A message box can be created using the class QMessageBox. This class provides a modal dialog with a short text, an icon, and buttons. The class has method show() display a message box and return immediately.

To show a messagebox we need to import QMessageBox.

from PyQt5.QtWidgets import QApplication, QWidget, QPushButton, QMessageBox

We use the method QMessageBox.question() to display the messagebox.

Related course: Create GUI Apps with PyQt5

PyQt5 messagebox code
Copy the code below to display a messagebox.

import sys
from PyQt5.QtWidgets import QApplication, QWidget, QPushButton, QMessageBox
from PyQt5.QtGui import QIcon
from PyQt5.QtCore import pyqtSlot

class App(QWidget):

    def __init__(self):
        super().__init__()
        self.title = 'PyQt5 messagebox - pythonspot.com'
        self.left = 10
        self.top = 10
        self.width = 320
        self.height = 200
        self.initUI()
        
    def initUI(self):
        self.setWindowTitle(self.title)
        self.setGeometry(self.left, self.top, self.width, self.height)

        buttonReply = QMessageBox.question(self, 'PyQt5 message', "Do you like PyQt5?", QMessageBox.Yes | QMessageBox.No, QMessageBox.No)
        if buttonReply == QMessageBox.Yes:
            print('Yes clicked.')
        else:
            print('No clicked.')

        self.show()
        
if __name__ == '__main__':
    app = QApplication(sys.argv)
    ex = App()
    sys.exit(app.exec_())  

More buttons for a messagebox
Take into account we use QMessageBox.Yes and QMessageBox.No. We can easily add other options:

buttonReply = QMessageBox.question(self, 'PyQt5 message', "Do you want to save?", QMessageBox.Yes | QMessageBox.No | QMessageBox.Cancel, QMessageBox.Cancel)
print(int(buttonReply))
if buttonReply == QMessageBox.Yes:
    print('Yes clicked.')
if buttonReply == QMessageBox.No:
    print('No clicked.')
if buttonReply == QMessageBox.Cancel:
    print('Cancel')

The available buttons are:

Overview
QMessageBox.Cancel	QMessageBox.Ok	QMessageBox.Help
QMessageBox.Open	QMessageBox.Save	QMessageBox.SaveAll
QMessageBox.Discard	QMessageBox.Close	QMessageBox.Apply
QMessageBox.Reset	QMessageBox.Yes	QMessageBox.YesToAll
QMessageBox.No	QMessageBox.NoToAll	QMessageBox.NoButton
QMessageBox.RestoreDefaults	QMessageBox.Abort	QMessageBox.Retry
QMessageBox.Ignore

If you are new to programming Python PyQt, I highly recommend this book.

Download PyQT5 Examples

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