擅长:python、mysql、java
<p>首先,GUI必须在主线程中运行,并且不能被无限循环阻塞。请改用<code>after</code>。要进行通信,请使用线程中的适当对象,例如Event:</p>
<pre><code>import tkinter as tk
import time
import threading
class MyClass(tk.Frame):
def __init__(self, master, event):
super().__init__(master)
self.master = master
self.event = event
self.label = tk.Label(master, text='')
self.label.pack()
self.after(100, self.blink_check)
def blink_check(self):
self.label['text'] = self.event.is_set()
self.after(100, self.blink_check)
def blink(event):
while True:
event.set()
time.sleep(2.5)
event.clear()
time.sleep(2.5)
def main():
root = tk.Tk()
root.title("My Blinker")
event = threading.Event()
t = threading.Thread(target=blink, args=(event,))
t.daemon = True
t.start()
frame = MyClass(root, event)
root.mainloop()
if __name__=="__main__":
main()
</code></pre>