CODEWITHSUNDEEP
pythontkinter
user14262610
user14262610

Reputation:

A better way to do this in Tkinter?

I'm currently writing a Python Tkinter START and STOP button.

As it uses tkinter when I click START the STOP button should appear in it's place. But to do this I need to use .destroy() on the button. So to get around this I've done the following (see code blow); however it seems bulky and can't but feel I've over complicated it. Any suggestions would be great

    def stop():
        global start_button

        try:
            stop_button.destroy()
        except NameError:
            pass

        print("Stopped. Hit GO to go again!")
        start_button = Button(self.b, text="GO!", font="calibri, 18", command=started, fg="white", width=10)
        start_button.pack(side=BOTTOM)
        start_button.config(bg="green")

    def started():
        global stop_button

        try:
            start_button.destroy()
        except NameError:
            pass

        print("Started. Hit ENTER to Stop!")
        stop_button = Button(self.b, text="STOP!", font="calibri, 18", command=stop, fg="white", width=10)
        stop_button.pack(side=BOTTOM)
        stop_button.config(bg="red")

    def first_start():
        start.destroy()
        started()

    start = Button(self.b, text="START!", font="calibri, 18", command=first_start, fg="white", width=10)
    start.pack(side=BOTTOM)
    start.config(bg="green")

Upvotes: 0

Views: 66

Answers (1)

Reblochon Masque
Reblochon Masque

Reputation: 36682

Here is a minimalist start/stop button that toggles its aspect and behavior when clicked. There is no need to destroy and replace buttons with such a toggling mechanism.

import tkinter as tk


def do_the_start_things():
    # replace print with the things to do at start
    print('starting now')
    
def do_the_stop_things():
    # replace print with the things to do at stop
    print('stopped!')

def toggle_start_stop():
    if startstop['text'] == 'START':
        startstop.config(text='STOP', fg='red')
        do_the_start_things()
    else:
        startstop.config(text='START', fg='green')
        do_the_stop_things()

        
root = tk.Tk()
startstop = tk.Button(root, text='START', command=toggle_start_stop, fg='green')
startstop.pack()


root.mainloop()

Upvotes: 2

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