如何删除当检查

Question

我建立了一个简单的待办事项列表，我试图让该复选框清除自身时则检查checkbutton（以表示任务已经完成）

我不知道我需要如何执行该功能才能自行移除。任何人都可以帮助我解决这个问题。我梳理了一系列的页面，没有一个真的表明你是如何做到这一点的。

class App(object): 

def __init__(self, master): 
    self.master = master 
    self.frame = Frame(master) 
    self.frame.grid() 
    self.addFrame = Frame(master) 
    self.addFrame.grid(row=0, column=0, columnspan=2, sticky='N') 
    self.listFrame = Frame(master) 
    self.listFrame.grid(row=1, column=0, columnspan=2, sticky='NW') 
    self.todoList = [] 
    self.initUI() 

def initUI(self): 

    self.entryBox = Entry(self.frame, width = 15) 
    self.entryBox.grid(row=0, column=0, sticky='N') 

    self.addButton = Button(self.frame, text="<-ADD->", command=self.add) 
    self.addButton.grid(row=0, column=1, sticky='N') 


def removeCheckButton(self): 
    # - CONFUSED HOW TO REMOVE THE SPECIFIC CHECKBUTTON 
    pass 

def add(self): 
    entry = self.entryBox.get() 
    self.entryBox.delete(0, END) 
    self.todoList.append(entry) 
    print self.todoList 
    var1 = IntVar() 
    self.buttonList = [] 
    for n in range(len(self.todoList)): 
     lx = Checkbutton(self.listFrame, text=self.todoList[n], variable=self.todoList[n], command=removeCheckButton) 
     lx.grid(row=n, column=0, sticky='NW') 
     self.buttonList.append(lx) 
     print self.buttonList 

Answer 1

看看这个。你的add是有点奇怪的设计（和不正确的国际海事组织），所以我稍微修改它以及其他部分。

from tkinter import * 


class App(object): 

    def __init__(self, master): 
     self.master = master 
     self.frame = Frame(master) 
     self.frame.grid() 
     self.addFrame = Frame(master) 
     self.addFrame.grid(row=0, column=0, columnspan=2, sticky='N') 
     self.listFrame = Frame(master) 
     self.listFrame.grid(row=1, column=0, columnspan=2, sticky='NW') 
     self.todoList = [] 
     self.buttonList = [] #<--- button list is here now 
     self.initUI() 

    def initUI(self): 

     self.entryBox = Entry(self.frame, width = 15) 
     self.entryBox.grid(row=0, column=0, sticky='N') 

     self.addButton = Button(self.frame, text="<-ADD->", command=self.add) 
     self.addButton.grid(row=0, column=1, sticky='N') 


    def removeCheckButton(self, button_no): 
     # - CONFUSED HOW TO REMOVE THE SPECIFIC CHECKBUTTON 
     # print(button_no, self.buttonList[button_no]) 
     #self.buttonList[button_no].grid_forget() 
     self.buttonList[button_no].destroy() 
     # del self.buttonList[button_no] 
     # del self.todoList[button_no] 


    def add(self): 
     entry = self.entryBox.get() 
     self.entryBox.delete(0, END) 
     self.todoList.append(entry) 
     print(self.todoList) 
     var1 = IntVar() 
     #self.buttonList = [] #<--- not sense having this here 
     # for n in range(len(self.todoList)): #<-- this for also very strange here. 
     n = len(self.buttonList) 
     lx = Checkbutton(self.listFrame, 
         text=self.todoList[n], 
         variable=self.todoList[n], 
         command=lambda ni=n: self.removeCheckButton(ni)) 
     lx.grid(row=n, column=0, sticky='NW') 
     self.buttonList.append(lx) 
     # print(self.buttonList) 


root = Tk() 
app = App(root) 
root.mainloop() 

P.S. 我使用python 3，但除了import part，代码应该为您执行。可能需要更多的修复，但复选框会按照他们的设想被破坏。