如何制作无限循环创建按钮tkinter？

问题描述

我想创建按钮，如果按下它-创建一个新按钮，依此类推（基本上是无限循环）。但是它只能运行一次-仅创建一个额外的按钮。


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！

解决方法

这是您的代码中的一些更改。我已经制作了rw和cl实例变量，并且还删除了行rw = 1和cl = 1，因为每次调用该函数时，它都会创建一个新按钮，但直接将其放置（1，1）在第一个按钮上方。

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()

python tkinter