在带有线程的tkinter中加载图像显示'pyimage2‘不存在
在带有线程的tkinter中加载图像显示'pyimage2‘不存在
提问于 2020-11-18 14:06:05
我正试图在我的应用程序中加载2个图像，第一个在主窗口，第二个在一个线程中。
代码如下：
from tkinter import *
import threading
import time
def foo():
global root
root = Tk()
img1 = PhotoImage(file='Logo.png')
lable1 = Label(root, image = img1).pack()
threading.Thread(target=bar).start()
root.mainloop()
def bar():
app = Tk()
app.withdraw()
time.sleep(5)
app.deiconify()
root.withdraw()
img2 = PhotoImage(file='./images/night_bulb.png')
lable3 = Label(app, image= img2).pack()
lable2 = Label(app, text='Starting Count now...').pack()
app.mainloop()
foo()这将生成以下输出：
"C:\Users\Samaksh Gupta\PycharmProjects\myIDLE\venv\Scripts\python.exe" "C:/Users/Samaksh Gupta/PycharmProjects/myIDLE/test.py"
Exception in thread Thread-1:
Traceback (most recent call last):
File "C:\Users\Samaksh Gupta\AppData\Local\Programs\Python\Python38\lib\threading.py", line 932, in _bootstrap_inner
self.run()
File "C:\Users\Samaksh Gupta\AppData\Local\Programs\Python\Python38\lib\threading.py", line 870, in run
self._target(*self._args, **self._kwargs)
File "C:/Users/Samaksh Gupta/PycharmProjects/myIDLE/test.py", line 20, in bar
lable3 = Label(app, image= img2).pack()
File "C:\Users\Samaksh Gupta\AppData\Local\Programs\Python\Python38\lib\tkinter\__init__.py", line 3143, in __init__
Widget.__init__(self, master, 'label', cnf, kw)
File "C:\Users\Samaksh Gupta\AppData\Local\Programs\Python\Python38\lib\tkinter\__init__.py", line 2567, in __init__
self.tk.call(
_tkinter.TclError: image "pyimage2" doesn't exist如何在两个窗口中都添加图像？
回答 1
Stack Overflow用户
回答已采纳
发布于 2020-11-18 14:33:46
这是因为您有两个Tk()实例。在bar()中使用Toplevel()。
此外，mainloop()不能在线程中执行，因此请从bar()中删除app.mainloop()。
最后，您需要保留img2的引用，否则它将被垃圾回收。
以下是基于您的更新代码：
from tkinter import *
import threading
import time
def foo():
global root
root = Tk()
img1 = PhotoImage(file='Logo.png')
lable1 = Label(root, image=img1).pack()
threading.Thread(target=bar).start()
root.mainloop()
def bar():
time.sleep(5)
root.withdraw()
app = Toplevel()
app.withdraw()
img2 = PhotoImage(file='./images/night_bulb.png')
label3 = Label(app, image=img2)
label3.pack()
label3.image = img2 # keep a reference to avoid garbage collection
Label(app, text='Starting Count now...').pack()
app.deiconify()
foo()页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/64887920
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