cursebox.py 文件源码

def poll_event(self):
        """
        Checks if an event happens and returns a string related to the event.

        Returns -1 if nothing happened during self.screen.timeout milliseconds.

        If the event is a normal (letter) key press,
        the letter is returned (case sensitive)

        :return: Event type
        """
        self.mutex.acquire()
        ch = self.screen.getch()
        self.mutex.release()

        if ch == -1:
            return EVENT_SKIP
        elif ch == 27:
            return EVENT_ESC
        elif ch == curses.KEY_RESIZE:
            return EVENT_RESIZE
        elif ch == 10 or ch == curses.KEY_ENTER:
            return EVENT_ENTER
        elif ch == 127 or ch == curses.KEY_BACKSPACE:
            return EVENT_BACKSPACE
        elif ch == curses.KEY_UP:
            return EVENT_UP
        elif ch == curses.KEY_DOWN:
            return EVENT_DOWN
        elif ch == curses.KEY_LEFT:
            return EVENT_LEFT
        elif ch == curses.KEY_RIGHT:
            return EVENT_RIGHT
        elif ch == 3:
            return EVENT_CTRL_C
        elif ch == 409:
            return EVENT_CLICK
        elif 0 <= ch < 256:
            return chr(ch)
        else:
            return EVENT_UNHANDLED