mainloop throwing error

[BhagyaJyoti22006]

I want to create a splash screen. in tkinter i can just call tkinter.mainloop() to run any added window. However ctk throws error:

Traceback (most recent call last):
File "", line 198, in _run_module_as_main
File "", line 88, in _run_code
File "C:\py\code.py", line 77, in
ctk.mainloop()
^^^^^^^^^^^^
AttributeError: module 'customtkinter' has no attribute 'mainloop'

[Anonymous6598]

Show full code please

[BhagyaJyoti22006]

from customtkinter import *

splash = CTk()
splash.title("splash")
splash.geometry("300x200")

splash_label = CTkLabel(splash, text="splash screen text")
splash_label.place(x=4,y=8)

def window():
    splash.destroy()
    root=CTk()
    root.title("title")
    root.geometry("500x550")
splash.after(3000, window)

mainloop()

[Anonymous6598]

Just put root.mainloop() in the function.

[Anonymous6598]

You forgot to put

splash.mainloop()

[Anonymous6598]

That's why there was an error.

[Anonymous6598]

@BhagyaJyoti22006, did it work?

[BhagyaJyoti22006]

I am trying to have a splash screen work. therefore i put mainloop(). In tkinter, the code works with just mainloop().
I am creating a new window (splash_screen) and destroying it. Then, creating another window (main_window). Therefore, I used just mainloop() to govern any opened window. This worked with tkinter, thats why I am confused.

splash.mainloop would only loop till splash is there. after its destroyed, no loop.

[Anonymous6598]

Try

root.splash()

[BhagyaJyoti22006]

well, root is not defined at that moment.

Traceback (most recent call last):
File "path", line 17, in
root.splash()
^^^^
NameError: name 'root' is not defined

If you meant root.mainloop(), that also throwing similar error.

[Anonymous6598]

Just put

root.mainloop()

Inside the function.

[BhagyaJyoti22006]

root code wont work before splash destroys. So, without splash.mainloop, the code just closes without any window.
Also, putting seperate mainloops for splash, root throws:

invalid command name "2816965442112update"
    while executing
"2816965442112update"
    ("after" script)
invalid command name "2816923050240check_dpi_scaling"
    while executing
"2816923050240check_dpi_scaling"
    ("after" script)

[Anonymous6598]

from customtkinter import *
from sys import *

splash = CTk()
splash.title("splash")
splash.geometry("300x200")

splash_label = CTkLabel(splash, text="splash screen text")
splash_label.place(x=4,y=8)

def run():
    splash.mainloop()

def window():
    splash.destroy()
    root=CTk()
    root.title("title")
    root.geometry("500x550")
    root.protocol("WM_DELETE_WINDOW", exit)
    root.mainloop()
    
splash.after(3000, window)

run()

this might be solution to your problem

[Anonymous6598]

When you exit app, exit kills all processes, therefore mistake disappears.

[BhagyaJyoti22006]

Tried your code, still getting:

invalid command name "2048207648960update"
    while executing
"2048207648960update"
    ("after" script)
invalid command name "2048167844288check_dpi_scaling"
    while executing
"2048167844288check_dpi_scaling"
    ("after" script)

[Anonymous6598]

It disappears, when you exit program.

[Anonymous6598]

Snimanje.2024-01-28.101134.mp4

[BhagyaJyoti22006]

Got it mate. But can we somehow get rid of that error message?

[Anonymous6598]

Unfortunately, not. Unless we use:

async def window():

[Anonymous6598]

It might help

[Anonymous6598]

this is 100% solution. When you check it, mark it as an answer:

from customtkinter import *
from sys import *

splash = CTk()
splash.title("splash")
splash.geometry("300x200")

splash_label = CTkLabel(splash, text="splash screen text")
splash_label.place(x=4,y=8)

def run_app():
    splash.mainloop()

def window():
    splash.withdraw()
    splash.quit()
    root=CTk()
    root.title("title")
    root.geometry("500x550")
    root.protocol("WM_DELETE_WINDOW", exit)
    root.mainloop()
    
splash.after(3000, window)

run_app()
#it disappears

[BhagyaJyoti22006]

congratulations!!! I'm happy for you.

[BhagyaJyoti22006]

this is 100% solution. When you check it, mark it as an answer:

from customtkinter import *
from sys import *

splash = CTk()
splash.title("splash")
splash.geometry("300x200")

splash_label = CTkLabel(splash, text="splash screen text")
splash_label.place(x=4,y=8)

def run_app():
    splash.mainloop()

def window():
    splash.withdraw()
    splash.quit()
    root=CTk()
    root.title("title")
    root.geometry("500x550")
    root.protocol("WM_DELETE_WINDOW", exit)
    root.mainloop()
    
splash.after(3000, window)

run_app()
#it disappears

I am trying to do something different now. I have a window which has a button and a checkbox. Clicking on this button will close the window and if the checkbox is checked, the programme will reopen. But, similar error occured doing this.

while True:
root = ctk.CTk()
app = Programe(root)
root.mainloop()
if Info.refresh is False:
break

The button calls self.root.destroy()

Error:

invalid command name "2784158436608update"
while executing
"2784158436608update"
("after" script)
invalid command name "2784144862784check_dpi_scaling"
while executing
"2784144862784check_dpi_scaling"
("after" script)
invalid command name "2784158566016_click_animation"
while executing
"2784158566016_click_animation"
("after" script)

[Anonymous6598]

Got it.

[Anonymous6598]

Can you show full code?

[BhagyaJyoti22006]

Can you show full code?
Yeah, I posted it below. Please check out.

[BhagyaJyoti22006]

import customtkinter as ctk

class Info:
    refresh = False

class App:
    def __init__(self, root):
        self.root = root
        self.root.geometry("200x300")
        self.root.protocol("WM_DELETE_WINDOW", self.close)
        self.button = ctk.CTkButton(self.root, command=self.refresh)
        self.button.grid(row=0,column=0)
    def refresh(self):
        Info.refresh = True
        self.root.destroy()
        pass
    def close(self):
        self.root.destroy()
        pass

def main():
    while True:
        root = ctk.CTk()
        app = App(root)
        root.mainloop()
        if Info.refresh is False:
            break
        # reload files and reopen dialog
        Info.refresh = False
    pass

if __name__ == "__main__":
    main()

This is my new code. If that button is clicked, the dialog is closed. Few files will be modified. And dialog is reopened.

[Anonymous6598]

You need exact same window reopen or not?

[BhagyaJyoti22006]

You need exact same window reopen or not?

Yeah. I want that exact same window reopened.

[Anonymous6598]

this might be a solution:

import customtkinter as ctk
import sys

class App(ctk.CTk):
    def __init__(self, *args, **kwargs):
        super().__init__(*args, **kwargs)
        
        self.geometry("300x300")
        self.protocol("WM_DELETE_WINDOW", sys.exit)
        
        self.button = ctk.CTkButton(self, command=self.close)
        self.button.grid(row=0, column=0)
        
        self.checkbox = ctk.CTkCheckBox(self, text="reopen", onvalue="yes", offvalue="no")
        self.checkbox.grid(row=0, column=1)

    def close(self):
        self.checkboxvalueget = self.checkbox.get()
        if self.checkboxvalueget == "yes":
            self.withdraw()
            self.quit()
            
            self.newroot = ctk.CTk()
            self.newroot.geometry("300x300")
            self.newroot.protocol("WM_DELETE_WINDOW", sys.exit)
            self.newroot.mainloop()

        else:
            sys.exit()
        

def main():
    root = App()
    root.mainloop()

if __name__ == "__main__":
    main()

[Anonymous6598]

I'll try.

[BhagyaJyoti22006]

I'll try.

Thanks bro. I have now tried everything I could search. Now eagerly waiting for your next reply.

[Anonymous6598]

[BhagyaJyoti22006]

Did you try clicking the first button and reopen app. the error occured during this procss only.

[BhagyaJyoti22006]

I'll try.

I have created a new discussion thread: #2543

Please join the discussion there and suggest what you think should be done. Others with similar problems would also be able to find their solution.