Question

我正在编写初始屏幕（这是辅助窗口），并且出现了非常奇怪的行为，有时启动屏幕死机并且根本不响应（事件是关闭窗口）

我正在使用 PyQt 5.9.2 。

main.py

if __name__ == "__main__":
    APP = QApplication([])
    splash_loader = SplashScreen()
    splash_loader.start()
    sys.exit(APP.exec())

此主应用创建一个启动画面实例并调用.start()。问题在于它仅在某些情况下发生（例如，约10次发生1次）。

splashScreen.py

class SplashScreen(QWidget):
    finished = pyqtSignal()

    def __init__(self):
        super().__init__()
        self._canceled = False
        self._connection_check_thread = threading.Thread(target=self.wait_for_connection, daemon=True)
        self._event_loop = QEventLoop()

    def start(self):
        self.show()
        self._connection_check_thread.start()
        self._event_loop.exec_()
        self.hide()

    def wait_for_connection(self):
        """ used to have connection check to some ip
            but in my case the problem happen even if the connection check 
            returned True right away
        """
        for _in range (5):
            pass
        self.abort_connecting()


    def abort_connecting(self):
        self._canceled = True
        self._event_loop.quit()

    def closeEvent(self, QCloseEvent):
        self.abort_connecting()

自定义启动屏幕窗口有时会冻结

0 个答案: