Different behaviour finishing an application in pyqt5 - pyqt6

[Gottfried Müller]

Thanks for your answer. After reading some other sources and qt
documentations the solution was simplier. I use QApplication.exit() not
QApplication.quit()


Am 22.03.22 um 13:47 schrieb Zhao Lee:
> https://stackoverflow.com/questions/39191394/slot-of-qclipboarddatachanged-was-called-twice
> hope it helps.
>
>
>
>
>
>
> At 2022-03-22 19:02:05, "Gottfried Müller"<gottfried.mueller at gmx.de>  wrote:
> >Hello,
> >
> >the follwing example shows a different behaviour in pyqt5 and pyqt6. I
> >did not found the reason. In pyqt5 after pressing the exit menu the
> >function "confirmClose" is called once, in pyqt6 twice. Closing the
> >application window does not show this effect. I wonder I am using
> >QApplication.quit but I did not find it in the Qt documentations and I
> >get no error. Substitute QApplication.quit with sys.exit has the same
> >different effect.
> >I am using manjaro pyt6.2.3, pyqt5.15.6, qt 6.2.3, qt.5.13
> >
> >import sys
> >from PyQt6.QtWidgets import QApplication, QWidget, QPushButton, QMenu,
> >QVBoxLayout
> >
> >class ApplWindow(QWidget):
> >     def __init__(self, parent=None):
> >         super().__init__(parent=parent)
> >         btn = QPushButton("Appl menu", parent=self)
> >         menu = QMenu(parent=self)
> >         exitProg = menu.addAction("Exit program")
> >         exitProg.triggered.connect(self.confirmClose)
> >         btn.setMenu(menu)
> >         layout = QVBoxLayout()
> >         layout.addWidget(btn)
> >         self.setLayout(layout)
> >
> >     def closeEvent(self, event):
> >         self.confirmClose()
> >         event.ignore()
> >
> >     def confirmClose(self):
> >         print("close confirmed")
> >         QApplication.quit()
> >
> >def main():
> >     appl = QApplication(sys.argv)
> >     applWindow = ApplWindow()
> >     applWindow.show()
> >     return appl.exec()
> >
> >
> >if __name__ == "__main__":
> >     main()
>
>
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