two different activebackground color for a button in tkinter-CodePudding

Hello so I'm learning tkinter in python 3.10.5 and so take a look at this and I'll explain

from tkinter import*
window=Tk()
window.geometry('400x400')
window.resizable(width=False,height=False)
def txt():
    btn.config(text='test')
btn=Button(window,text='',activebackground=('crimson' if btn else 'lime'),command=txt)
btn.pack(expand=True,fill=BOTH)

window.mainloop()

so I have a button that takes the whole window and I want to write in activebackground part that if the button has no text in it activebackground color would be crimson otherwise lime. how to do that?

CodePudding user response：

Set activebackground within btn.config method and use if ... else to toggle. E.g.:

from tkinter import*
window=Tk()
window.geometry('400x400')
window.resizable(width=False,height=False)

def txt():
    if btn['text'] == '':
        btn.config(text='test', activebackground='lime')
    else:
        btn.config(text='', activebackground='crimson')
    
btn=Button(window,text='',activebackground='crimson', command=txt)
btn.pack(expand=True,fill=BOTH)

window.mainloop()