Question

我已经使用了一个乌龟库（时钟）的示例并对其进行了扩展，因此即使打开了其他程序，它也位于顶部。我希望当有人单击时钟窗口时将其关闭。大多数情况下，它工作正常，但有时会打开一个新的空乌龟窗口。如何在不弹出新窗口的情况下关闭它？

这是代码关闭的部分：

def main():
    tracer(False)
    setup()
    tracer(True)
    tick()
    wn.exitonclick()

这是整个程序：

import turtle as t
from datetime import datetime
import tkinter as Tkinter


def jump(distanz, winkel=0):
    penup()
    right(winkel)
    forward(distanz)
    left(winkel)
    pendown()

def hand(laenge, spitze):
    fd(laenge*1.15)
    rt(90)
    fd(spitze/2.0)
    lt(120)
    fd(spitze)
    lt(120)
    fd(spitze)
    lt(120)
    fd(spitze/2.0)

def make_hand_shape(name, laenge, spitze):
    reset()
    jump(-laenge*0.15)
    begin_poly()
    hand(laenge, spitze)
    end_poly()
    hand_form = get_poly()
    register_shape(name, hand_form)

def clockface(radius):
    reset()
    pensize(7)
    for i in range(60):
        jump(radius)
        if i % 5 == 0:
            fd(5)
            penup()
            fd(20)
            pendown()
            jump(-radius-25)
        else:
            dot(3)
            jump(-radius)
        rt(6)

def setup():
    global second_hand, minute_hand, hour_hand, writer, wn
    mode("logo")
    t.setup(width=150, height=150, startx=1920-150, starty=500)
    t.title("Clock")
    make_hand_shape("second_hand", 60, 15)
    make_hand_shape("minute_hand",  50, 15)
    make_hand_shape("hour_hand", 30, 15)
    clockface(60)
    second_hand = Turtle()
    second_hand.shape("second_hand")
    second_hand.color("gray20", "gray80")
    minute_hand = Turtle()
    minute_hand.shape("minute_hand")
    minute_hand.color("blue1", "red1")
    hour_hand = Turtle()
    hour_hand.shape("hour_hand")
    hour_hand.color("blue3", "red3")
    for hand in second_hand, minute_hand, hour_hand:
        hand.resizemode("user")
        hand.shapesize(1, 1, 3)
        hand.speed(0)
    ht()
    writer = Turtle()
    wn=Screen()
    wn.screensize(50, 50)
    wn.getcanvas()._root().overrideredirect(True)
    rootwindow = wn.getcanvas().winfo_toplevel()
    rootwindow.call('wm', 'attributes', '.', '-topmost', '1')
    #wn.exitonclick()
    #rootwindow.call('wm', 'attributes', '.', '-topmost', '0')
    #writer.mode("logo")
    writer.ht()
    writer.pu()
    writer.bk(85)

def wochentag(t):
    wochentag = ["Monday", "Tuesday", "Wednesday",
        "Thursday", "Friday", "Saturday", "Sunday"]
    return wochentag[t.weekday()]

def datum(z):
    monat = ["Jan.", "Feb.", "Mar.", "Apr.", "May", "June",
             "July", "Aug.", "Sep.", "Oct.", "Nov.", "Dec."]
    j = z.year
    m = monat[z.month - 1]
    t = z.day
    return "%s %d %d" % (m, t, j)

def tick():
    t = datetime.today()
    sekunde = t.second + t.microsecond*0.000001
    minute = t.minute + sekunde/60.0
    stunde = t.hour + minute/60.0
    try:
        tracer(False)  # Terminator can occur here
        writer.clear()
        writer.home()
        writer.forward(25)
        writer.write(wochentag(t),
                     align="center", font=("Courier", 11, "bold"))
        writer.back(60)
        writer.write(datum(t),
                     align="center", font=("Courier", 11, "bold"))
        writer.forward(85)
        tracer(True)
        second_hand.setheading(6*sekunde)  # or here
        minute_hand.setheading(6*minute)
        hour_hand.setheading(30*stunde)
        tracer(True)
        ontimer(tick, 100)
    except Terminator:
        pass  # turtledemo user pressed STOP

def main():
    tracer(False)
    setup()
    tracer(True)
    tick()
    wn.exitonclick()
    return "EVENTLOOP"
try:
    if __name__ == "__main__":
        mode("logo")
        msg = main()
        print(msg)
        mainloop()
except:
    pass

这是输出：

输出：

Answer 1

（如前所述，您的代码对我而言无法正确启动。）

我担心的是您同时拥有mainloop()和exitonclick()。它们执行相同的功能（exitonclick()将onclick()设置为bye()并调用mainloop()），并且应该只有其中一个。（同上done()。）

下面，我对代码进行了一些简化，以简化退出过程并使其同步，因为我设置了一个设置全局变量exitonclick()的点击处理程序，而不是running，{ 1}}例程检查是否应该再次调用tick()或执行ontimer()：

bye()

我希望您发现其中一些有用的变化。

为什么我的海龟程序无法正常关闭？

1 个答案: