tkinter条目小部件如何在某些数字/字符后自动"tab"？

Question

我正在编写一个python tkinter，试图拥有2个入口小部件。在第一个条目小部件中输入5位数字后，我希望第6位数字可以自动跳转到下一个条目小程序。我怎样才能重写它使它成为现实？

import tkinter as tk
root=tk.Tk()
canvas1=tk.Canvas(root,width=400,height=400,bg='#FFFFFF')
canvas1.pack()
entry1=tk.Entry(root,width=8)
canvas1.create_window(10,100,window=entry1,anchor='nw')
entry1.focus_set()

entry1=tk.Entry(root,width=8)
canvas1.create_window(100,100,window=entry1,anchor='nw')
root.mainloop()

Answer 1

您正在寻找条目验证。尝试以下代码：

import tkinter as tk

def on_validate(P):
if len(P) == 5:  # The 6th entry is taken up by the 2nd entry widget
entry2.focus_set()
return True
root = tk.Tk()
canvas1 = tk.Canvas(root, width=400, height=400, bg='#FFFFFF')
canvas1.pack()
entry1 = tk.Entry(root, width=8, validate="key")
entry1['validatecommand'] = (entry1.register(on_validate), '%P')
canvas1.create_window(10, 100, window=entry1, anchor='nw')
entry1.focus_set()
entry2 = tk.Entry(root, width=8)
canvas1.create_window(100, 100, window=entry2, anchor='nw')
root.mainloop()