CODEWITHSUNDEEP
pythontkinter
bangKok
bangKok

Reputation: 332

Changing objects in the __init__ method

Is it possible to change the objects in the __init__ method? I want to do it, for example to change all colors of any widgets, by one click:

from tkinter import *

class App(Tk):
    def __init__(self, bg="black"): #<----------
        super().__init__()
        self.geometry("400x400")

        self.bg = bg

        self.frame = Frame(self, bg=self.bg)
        self.frame.pack(fill=BOTH, expand=YES)

        self.btn = Button(self, text="Change BG", command=self.chng_bg)
        self.btn.pack()

    def chng_bg(self):
        self.bg = "red"             # I want to change the self.bg for example to use it bye Themes
                                    # without configure each widget seperatly


if __name__ == '__main__':
    App()
    mainloop()

So here I'm trying to change the initialized bg=black into a red background. I searched for a solution, but I didn't find anything.

Upvotes: 0

Views: 120

Answers (1)

Bryan Oakley
Bryan Oakley

Reputation: 386240

Changing the variables doesn't change widgets that use the variables. You will need to explicitly change the widgets yourself.

def chng_bg(self):
    self.bg = "red"
    self.configure(background=self.bg)
    self.frame.configure(bg=self.bg)
    ...

If you use themed (ttk) widgets, you can change the attributes of the theme and all of the widgets that use the theme will automatically update.

Upvotes: 1

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