Python Tkinter Image Problems

Question

I'm, trying to make my app right now, but with a lot of errors. I tried to use images as backgrounds for the buttons so that they'll look better. But whenever I run my program, open up another window with the button I made, there is this error:


Exception in Tkinter callback
Traceback (most recent call last):
  File "C:\Users\szab9\AppData\Local\Programs\Python\Python311\Lib\tkinter\__init__.py", line 1948, in __call__
    return self.func(*args)
           ^^^^^^^^^^^^^^^^
  File "C:\Users\szab9\OneDrive\Asztali Gép\VM\add_element.py", line 21, in addElementFunc
    add_element.iconphoto(False, logo)
  File "C:\Users\szab9\AppData\Local\Programs\Python\Python311\Lib\tkinter\__init__.py", line 2183, in wm_iconphoto
    self.tk.call('wm', 'iconphoto', self._w, *args)
_tkinter.TclError: can't use "pyimage18" as iconphoto: not a photo image

I'm using the same logo for every window, and I usually use this logic:
logo = PhotoImage(file="*path*")
root.iconphoto(False, logo)

If I run the first window, it's fine. After I open up the other window, it just gives an error mention previously. If I open the "other" python file, it just runs perfectly fine. (python button1_functionality.py)

Please fix my difficulties, it may be because I'm using the same photo over and over again, but how do I fix that? Please help.

Answer 1

Maybe you have to select the folder where the file is or say at the beginning to recognise the file.

Comments

I can't, since I'm using PhotoImage, it needs a default root.

Answer 2

It seems like you're encountering an issue with reusing the same PhotoImage object for multiple windows in Tkinter. The problem is that once the PhotoImage object is associated with a window, it cannot be reused for another window.

To fix this, you should create a new PhotoImage object for each window. Try modifying your code like this:

from tkinter import PhotoImage

# Create a new PhotoImage object for each window
logo = PhotoImage(file="*path*")

# Use logo for the first window
root.iconphoto(False, logo)

# For the second window, create a new PhotoImage object
second_logo = PhotoImage(file="*path*")
second_window.iconphoto(False, second_logo)


This way, you create separate PhotoImage objects for each window, and it should resolve the issue you're facing.

Comments

You may be right, but your assumption seems a little absurd. PhotoImage has a garbage collector (Not sure, correct me if I'm wrong), and that may be the problem. Also, I use seperate .py folders to store button functionalities, so when there is a button that opens up a window, I import that function from the file, and use that function as the button's command. In a nutshell: "logo" variable would not be recognised inside the other file, so it would be irrelevent to make another variable. I also tried that but it didn't work.  I even tried to use PIL's modules: Image and ImageTk, but still failed. Thanks for trying to help though :D