Às 07:29 de 07/01/21, Paulo da Silva escreveu:
> Hi!
>
> Does anybody know why cmd method isn't called when I change the button
> state (clicking on it) in this example?
> I know that this seems a weird class use. But why doesn't it work?
> Thanks.
>
> class C:
> from tkinter import Checkbutton
> import tkinter
>
> @staticmethod
> def cmd():
> print("Test")
>
> top=tkinter.Tk()
> cb=Checkbutton(command=cmd)
> cb.pack()
>
> @staticmethod
> def loop():
> C.top.mainloop()
>
> c=C()
> c.loop()
>
After some experiments I found two solutions:
1)
class C:
@staticmethod
def cmd():
print("Test")
class C: #@DuplicatedSignature
from tkinter import Checkbutton
import tkinter
top=tkinter.Tk()
cb=Checkbutton(command=C.cmd)
cb.pack()
@staticmethod
def loop():
C.top.mainloop()
c=C()
c.loop()
2)
class C:
from tkinter import Checkbutton
import tkinter
@staticmethod
def cmd():
print("Test")
top=tkinter.Tk()
cb=Checkbutton(command=lambda : C.cmd())
cb.pack()
@staticmethod
def loop():
C.top.mainloop()
c=C()
c.loop()
This one as a sequence of the answer of Terry - thanks.
BTW, does anyone know I can I get the arguments eventually passed by the
Checkbutton event, or any other widget callback (*pargs, **kargs) using
this "solution"?
--
https://mail.python.org/mailman/listinfo/python-list
