The issue you are facing is due to having two instances of Tk() running in your code. The first one is hidden inside the window1 function when you initialize the frame without a parent, and the second instance is in the GUI class. As you did not specify the parent of the IntVar, they are associated with the first created window instead of the intended one.
To address this problem, I made the following modifications to your code:
- I changed the
Window1 class to inherit from Tk since it serves as the main window
- I updated your
GUI class to inherit from Toplevel to prevent multiple instances of Tk
- I explicitly specified the parent for the
IntVar to remove any ambiguity
Below is the updated code:
import tkinter as tk
class Window1(tk.Tk):
def __init__(self):
tk.Tk.__init__(self)
self.title("MANAGEMENT")
self.button1 = tk.Button(self, text="ENTRY", width=25,command=self.GUI)
self.button1.grid(row=0, column=1, columnspan=2, sticky="wesn" )
self.button2 = tk.Button(self, text="SHOW BILL", width=25 )
self.button2.grid(row=1, column=1, columnspan=2, sticky="wesn")
self.button3 = tk.Button(self, text="MEMBERS", width=25)
self.button3.grid(row=2, column=1 , columnspan=2, sticky="wesn")
def GUI(self):
self.GUI = GUI(self)
class GUI(tk.Toplevel):
def __init__(self, parent):
tk.Toplevel.__init__(self, parent)
self.buttonDic = {
'1': 0,
'2': 0,
'3': 0,
'4': 0
}
for key in self.buttonDic:
self.buttonDic[key] = tk.IntVar(self)
aCheckButton = tk.Checkbutton(self, text=key,
variable=self.buttonDic[key])
aCheckButton.grid(sticky='')
submitButton = tk.Button(self, text="Submit",
command=self.query_checkbuttons)
submitButton.grid()
def query_checkbuttons(self):
for key, value in self.buttonDic.items():
state = value.get()
if state != 0:
print(key)
self.buttonDic[key].set(0)
def main():
Window1().mainloop()
if __name__ == '__main__':
main()