如何制作無限循環創建按鈕（tkinter）？

Question

我想創建按鈕，如果按下它 - 創建一個新的但依此類推（基本上是無限循環）。 但它只工作一次 - 只創建一個額外的按鈕。

from tkinter import *

class Application(Frame):
    rw = 0
    cl = 0
    def __init__(self, master):
        super(Application, self).__init__(master)
        self.grid()
        self.create_widgets()

    def create_widgets(self):
        self.btn1 = Button(self, text = 'Create  a new button')
        self.btn1.grid(row = 0, column = 0, sticky = W)
        self.btn1['command'] = self.new_button

    def new_button(self):
        rw = 1
        cl = 1
        self.btn1 = Button(self, text = 'Create  a new button')
        self.btn1.grid(row = rw, column = cl, sticky = W)
        rw+=1
        cl+=1

root = Tk()
root.title('King of the Kings!')
root.geometry('400x205')
app = Application(root)
root.mainloop()

干杯!

Answer 1

以下是您的代碼中的一些更改。 我創建了rw和cl實例變量，並刪除了rw = 1和cl = 1因為每次調用該函數時，它都會創建一個新按鈕，但將其直接放置在位置 (1, 1) 的第一個按鈕上方。

from tkinter import *

class Application(Frame):
    def __init__(self, master):
        super(Application, self).__init__(master)
        self.rw = 1      # Made rw and cl instance variables
        self.cl = 1      #
        self.grid()
        self.create_widgets()

    def create_widgets(self):
        self.btn1 = Button(self, text = 'Create a new button')
        self.btn1.grid(row = 0, column = 0, sticky = W)
        self.btn1['command'] = self.new_button

    def new_button(self):
        self.btn1 = Button(self, text = 'Create a new button')
        self.btn1.grid(row=self.rw, column=self.cl, sticky = W)
        self.rw += 1
        self.cl += 1

root = Tk()
root.title('King of the Kings!')
root.geometry('400x205')
app = Application(root)
root.mainloop()