I'm trying to create a back button. I have an image called back-button.png in the folder img.
This is my code:
from tkinter import *
import customtkinter as ctk
root = Tk()
ctk.CTkLabel(root,
text = 'This is a label',
text_font =('Verdana', 17)).pack(side = LEFT, pady = 11)
img = PhotoImage(file="./img/back-button.png")
ctk.CTkButton(root, image = img).pack(side = LEFT)
root.mainloop()
When I run this code I get this error:
Traceback (most recent call last):
File "c:\Users\User\Desktop\youtube-audio-downloader\tempCodeRunnerFile.py", line 11, in <module>
ctk.CTkButton(root, image = img).pack(side = LEFT)
File "C:\Users\User\AppData\Local\Programs\Python\Python39\lib\site-packages\customtkinter\customtkinter_button.py", line 102, in __init__
self.draw()
File "C:\Users\User\AppData\Local\Programs\Python\Python39\lib\site-packages\customtkinter\customtkinter_button.py", line 147, in draw
self.canvas.configure(bg=CTkColorManager.single_color(self.bg_color, self.appearance_mode))
File "C:\Users\User\AppData\Local\Programs\Python\Python39\lib\tkinter\__init__.py", line 1646, in configure
return self._configure('configure', cnf, kw)
File "C:\Users\User\AppData\Local\Programs\Python\Python39\lib\tkinter\__init__.py", line 1636, in _configure
self.tk.call(_flatten((self._w, cmd)) + self._options(cnf))
_tkinter.TclError: unknown color name "."
So, why is this happening? And how can I display an image on a button?
The problem is that the CtkButton widget doesn't not accept parameters the same way as standard widgets. The first parameter to a CtkButton is the background color, but you're passing the root window and the root window isn't a valid color.
You need to explicitly assign the root window to the master argument.
ctk.CTkButton(master=root, image = img).pack(side = LEFT)
# ^^^^^^^