與複選按鈕，沒有能夠得到檢查按鈕狀態

Question

我想提出一個彈出窗口，對主窗口中的按鈕被按下Tkinter的彈出窗口。彈出窗口有很多檢查按鈕，我需要將檢查按鈕的狀態返回到主窗口，並且還可以使用全選和全選按鈕。但是我使用這些變量出現錯誤，並且無法將狀態傳遞迴主窗口。

這裏是我寫的程序：

import Tkinter 
import tkMessageBox 

top = Tkinter.Tk() 
state=[[]] 

def popup(x): 

    def select_clear_states(): 
     global Vars, all_states 
     states = all_states.get() 

     if states == 0: 
      for I in range(len(Vars)): 
       Vars[I].set(0) 
     if states == 1: 
      for I in range(len(Vars)): 
       Vars[I].set(1) 

    Vars = [] 

    root = Tkinter.Tk() 

    all_states = Tkinter.IntVar() 
    select_all = Tkinter.Checkbutton(root, text = "select/deselect all",variable = all_states, command = select_clear_states) 
    select_all.grid(row = 0, column = 0, padx = 5, pady = 1) 

    for n in range(10): 

     var = Tkinter.IntVar() 
     Vars.append(var) 
     checkbox = Tkinter.Checkbutton(root, text = n+1, variable= Vars[n]) 
     checkbox.grid(row = n+1, column = 0, padx = 5, pady = 1) 

    root.mainloop() 


A = Tkinter.Button(top, text ="Hello1",command=lambda: popup(1)) 
A.pack() 

B = Tkinter.Button(top, text ="Hello2",command=lambda: popup(2)) 
B.pack() 

C = Tkinter.Button(top, text ="Hello3",command=lambda: popup(3)) 
C.pack() 

top.mainloop() 

我不能夠利用變量瓦爾all_state和國家[[]]，拿到支票button.am的他狀態得到這個錯誤

的

Exception in Tkinter callback 
    Traceback (most recent call last): 
    File "C:\Python27\lib\lib-tk\Tkinter.py", line 1536, in __call__ 
     return self.func(*args) 
    File "C:\Users\Synapse\Documents\Neo\Tutorial\python_tutorial\button.py", line 11, in select_clear_states 
     states = all_states.get() 
    NameError: global name 'all_states' is not defined 

我應該能夠使用select/deselectall按鈕，也無法取回每個檢查所有按鈕狀態到主窗口。

Answer 1

使用類的示例代碼。

它使用Toplevel()來創建PopUp，因爲Tkinter應該只有一個Tk()窗口。

而且由於多個循環使問題與變量的值就只用一個mainloop()。

它可以創建不同數量的複選框。

它需要更多的工作 - 即。返回值 - 但現在您可以使用win.states來獲取所有複選框的狀態（或設置它們）。

import Tkinter as tk 
import tkMessageBox 

# --- classes --- (CamelCase names) 

class PopUp(tk.Toplevel): 

    def __init__(self, number=10): 
     tk.Toplevel.__init__(self) 

     # - global checkbox to set all "small" checkboxes - 

     self.global_state = tk.BooleanVar() 

     cb = tk.Checkbutton(self, text="select/deselect all", 
          variable=self.global_state, 
          command=self.select_clear_states) 
     cb.grid(row=0, column=0, padx=5, pady=1) 

     # - "small" checkboxes - 

     self.states = [] 

     for n in range(1, number+1): 
      var = tk.BooleanVar() 
      cb = tk.Checkbutton(self, text=str(n), variable=var) 
      cb.grid(row=n, column=0, padx=5, pady=1) 
      self.states.append(var) 


    def select_clear_states(self): 
     # get global checkbox 
     state = self.global_state.get() 

     # set all "small" checkboxes 
     for x in self.states: 
      x.set(state) 

# --- functions --- (lower_case names) 

def popup(num): 

    win = PopUp(num) 
    #win.states[1].set(True) 

# --- main --- (lower_case names) 

root = tk.Tk() 

b = tk.Button(root, text="5 checkboxes", command=lambda:popup(5)) 
b.pack() 

b = tk.Button(root, text="10 checkboxes", command=lambda:popup(10)) 
b.pack() 

b = tk.Button(root, text="3 checkboxes", command=lambda:popup(3)) 
b.pack() 

root.mainloop()