禁用 tkinter 小部件的焦点–Python
原文:https://www . geesforgeks . org/disable-focus-for-tkinter-widgets-python/
先决条件: Python-Tkinter
在本文中，我们将讨论如何在 Tkinter 框架中禁用小部件的焦点。为了禁用焦点，我们在小部件中使用 takefocus 选项，并将其值指定为 0。
逐步实施:
步骤 1: 导入 tkinter 并初始化 Tkinter 窗口
Python 3
# import tkinter
import tkinter as tk
# initialize a tkinter window
root = tk.Tk()
# Creating the geometry with width and height of 300px
root.geometry("300x300")
# creating the body loop
root.mainloop()
步骤 2: 向应用程序添加一些小部件
#创建按钮部件
btn = tk。按钮(根，text =“Button”)#初始化小部件。
btn.pack() #在应用程序中调用小部件
代码:
Python 3
import tkinter as tk
# initialize a tkinter window
root = tk.Tk()
# Creating the geometry with width and height of 300px
root.geometry("300x300")
# create a button
btn = tk.Button(root, text ="I am button")
btn.pack()
# text widget
txt = tk.Entry(root, width=10)
txt.pack()
# create a radio button
rb = tk.Radiobutton(root, text ="I am radio button")
rb.pack()
# create a check button
cb = tk.Checkbutton(root, text = "I am check button")
cb.pack()
root.mainloop()
输出:
在这里，我们注意到，在按下 TAB 键后，我们开始关注每个小部件。
步骤 3: 在我们的程序中添加禁用聚焦功能。
我们使用 takefocus 参数来禁用焦点
Syntax: takefocus = 0
# for button
btn = tk.Button(root, text="Button", takefocus=0)
该程序的方法是在 takefocus 参数的帮助下禁用小部件的焦点。为此，我们将其值设置为 0。其他小部件启用了焦点。
代码:
Python 3
import tkinter as tk
root = tk.Tk()
root.geometry("300x300")
# creating button
btn = tk.Button(root, text ="I am button")
btn.pack()
# takefocus is set to 0 for disabling the TAB key
# focus in widget
btn_no_focus = tk.Button(root, text ="I am not focused",
takefocus = 0,foreground = "red")
btn_no_focus.pack()
# created an entry widget with width 10
txt = tk.Entry(root, width = 10)
txt.pack()
# creating a entry widget with width 10 and focus is
# 0 hence disabled
txt = tk.Entry(root, width = 10, takefocus = 0)
txt.pack()
# Creating radiobutton
rb = tk.Radiobutton(root, text ="I am radio button")
rb.pack()
# putting an takefocus=0 for disabling focus
rb_unfocus = tk.Radiobutton(root, text ="I am unfocused radio button",
takefocus = 0,foreground = "red")
rb_unfocus.pack()
# creating the checkbutton
cb = tk.Checkbutton(root, text = "I am check button")
cb.pack()
cb_unfocused = tk.Checkbutton(root, text = "I am unfocused check button",
takefocus = 0, foreground = "red")
cb_unfocused.pack()
root.mainloop()
输出:
红色小部件有 takefocus=0 ，其他没有这个说法。红色只是为了清晰起见，你也可以去掉它。
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