Image background

from PySide2.QtWidgets import QWidget, QVBoxLayout, QPushButton, QApplication
from PySide2.QtGui import QPainter, QImage
import sys


IMAGE_PATH = r"e:\Photos\Austria wekend\IMG_7259.JPG"


class GameWindowDialog(QWidget):
    def __init__(self):
        super(GameWindowDialog, self).__init__()
        self.resize(500, 500)
        self.background_image = QImage(IMAGE_PATH)

        main_layout = QVBoxLayout(self)
        button = QPushButton("Click")
        main_layout.addWidget(button)

    def paintEvent(self, e):
        painter = QPainter()
        painter.begin(self)
        self.drawWidget(painter)
        painter.end()

    def drawWidget(self, painter):
        rect = self.rect()
        painter.drawImage(rect, self.background_image)


if __name__ == '__main__':
    app = QApplication(sys.argv)
    win = GameWindowDialog()
    win.show()
    app.exec_()