#https://www.pythonguis.com/tutorials/pyqt6-signals-slots-events/
import sys
from PyQt6.QtWidgets import QApplication, QMainWindow, QPushButton
class MainWindow(QMainWindow):
    def __init__(self):
        super().__init__()
        self.button_is_checked = True
        self.setWindowTitle("Moja aplikacija")
        gumb = QPushButton("Klikni me!")
        gumb.setCheckable(True)
        gumb.clicked.connect(self.the_button_was_toggled)
        self.setCentralWidget(gumb)
    def the_button_was_toggled(self, checked):
        self.button_is_checked = checked
        print(self.button_is_checked)
aplikacija = QApplication(sys.argv)
okno = MainWindow()
okno.show()
aplikacija.exec()