Python 3，Tkinter，如何更新按钮文本

Python 3, Tkinter, How to update button text

提问by Mrchooch

Im trying to make it so that when the user clicks a button, it becomes "X" or "0" (Depending on their team). How can I make it so that the text on the button is updated? My best idea so far has been to delete the buttons then print them again, but that only deletes one button. Here's what I have so far:

我试图做到这一点，当用户点击一个按钮时，它会变成“X”或“0”（取决于他们的团队）。我怎样才能使按钮上的文本更新？到目前为止，我最好的想法是删除按钮然后再次打印它们，但这只会删除一个按钮。这是我到目前为止所拥有的：

from tkinter import *

BoardValue = ["-","-","-","-","-","-","-","-","-"]

window = Tk()
window.title("Noughts And Crosses")
window.geometry("10x200")

v = StringVar()
Label(window, textvariable=v,pady=10).pack()
v.set("Noughts And Crosses")

def DrawBoard():
    for i, b in enumerate(BoardValue):
        global btn
        if i%3 == 0:
            row_frame = Frame(window)
            row_frame.pack(side="top")
        btn = Button(row_frame, text=b, relief=GROOVE, width=2, command = lambda: PlayMove())
        btn.pack(side="left")

def PlayMove():
    BoardValue[0] = "X"
    btn.destroy()
    DrawBoard()

DrawBoard()
window.mainloop()

采纳答案by David

The Button widget, just like your Label, also has a textvariable=option. You can use StringVar.set()to update the Button. Minimal example:

按钮小部件，就像您的标签一样，也有一个textvariable=选项。您可以使用StringVar.set()更新按钮。最小的例子：

import tkinter as tk

root = tk.Tk()

def update_btn_text():
    btn_text.set("b")

btn_text = tk.StringVar()
btn = tk.Button(root, textvariable=btn_text, command=update_btn_text)
btn_text.set("a")

btn.pack()

root.mainloop()

回答by WhyAreYouReadingThis

btnis just a dictionary of values, lets see what comes up then:

btn只是一个值字典，让我们看看接下来会发生什么：

#lets do another button example
Search_button
<tkinter.Button object .!button>
#hmm, lets do dict(Search_button)
dict(Search_button)
{'activebackground': 'SystemButtonFace', 'activeforeground': 
'SystemButtonText', 'anchor': 'center', 'background': 'SystemButtonFace', 
'bd': <pixel object: '2'>, 'bg': 'SystemButtonFace', 'bitmap': '', 
'borderwidth': <pixel object: '2'>, 'command': '100260920point', 'compound': 
'none', 'cursor': '', 'default': 'disabled', 'disabledforeground': 
'SystemDisabledText', 'fg': 'SystemButtonText', 'font': 'TkDefaultFont', 
'foreground': 'SystemButtonText', 'height': 0, 'highlightbackground': 
'SystemButtonFace', 'highlightcolor': 'SystemWindowFrame', 
'highlightthickness': <pixel object: '1'>, 'image': '', 'justify': 'center', 
'overrelief': '', 'padx': <pixel object: '1'>, 'pady': <pixel object: '1'>, 
'relief': 'raised', 'repeatdelay': 0, 'repeatinterval': 0, 'state': 
'normal', 'takefocus': '', 'text': 'Click me for 10 points!', 
'textvariable': '', 'underline': -1, 'width': 125, 'wraplength': <pixel 
object: '0'>}
#this will not work if you have closed the tkinter window

As you can see, it is a large dictionary of values, so if you want to change any button, simply do:

如您所见，它是一个大型值字典，因此如果您想更改任何按钮，只需执行以下操作：

Button_that_needs_to_be_changed["text"] = "new text here"

Thats it really!

原来如此！

It will automatically change the text on the button, even if you are on IDLE!

即使您处于空闲状态，它也会自动更改按钮上的文本！

回答by mesutpiskin

use myButtonObject["text"] = "Hello World"

用 myButtonObject["text"] = "Hello World"

python 3

蟒蛇 3

from tkinter import *

btnMyButton = Button(text="Im Button", command=onClick)
btnMyButton["text"] = "Im not button"

python 2

蟒蛇2

import Tkinter as tk

btnMyButton = tk.Button(text="Im Button", command=onClick)
btnMyButton["text"] = "Im not button"

回答by ChaosPredictor

Another way is by btn.configure(text="new text"), like this:

另一种方法是通过 btn.configure(text="new text")，像这样：

import tkinter as tk
root = tk.Tk()

def update_btn_text():
    if(btn["text"]=="a"):
        btn.configure(text="b")
    else:
        btn.configure(text="a")


btn = tk.Button(root, text="a", command=update_btn_text)
btn.pack()

root.mainloop()

回答by Trieu Nguyen

To sum up this thread: button.configand button.configureboth work fine!

综上所述这个线程：button.config和button.configure都工作得不错！

button.config(text="hello")

or

或者

button.configure(text="hello")

回答by ForceVII

I think that code will be useful for you.

我认为该代码对您有用。

import tkinter 
from tkinter import *
#These Necessary Libraries

App = Tk()
App.geometry("256x192")

def Change():
    Btn1.configure(text=Text.get()) # Changes Text As Entry Message.
    Ent1.delete(first=0, last=999) # Not necessary. For clearing Entry.

Btn1 = Button(App, text="Change Text", width=16, command=Change)
Btn1.pack()

Text = tkinter.StringVar() # For Pickup Text

Ent1 = Entry(App, width=32, bd=3, textvariable=Text) #<-
Ent1.pack()

App.mainloop()

回答by Rahulsdhar

from tkinter import *

BoardValue = ["-","-","-","-","-","-","-","-","-"]

window = Tk()
window.title("Noughts And Crosses")
window.geometry("10x200")

v = StringVar()
Label(window, textvariable=v,pady=10).pack()
v.set("Noughts And Crosses")

btn=[]

class BoardButton():
    def __init__(self,row_frame,b):
        global btn
        self.position= len(btn)
        btn.append(Button(row_frame, text=b, relief=GROOVE, width=2,command=lambda: self.callPlayMove()))
        btn[self.position].pack(side="left")

    def callPlayMove(self):
        PlayMove(self.position)

def DrawBoard():
    for i, b in enumerate(BoardValue):
        global btn
        if i%3 == 0:
            row_frame = Frame(window)
            row_frame.pack(side="top")
        BoardButton(row_frame,b)
        #btn.append(Button(row_frame, text=b, relief=GROOVE, width=2))
        #btn[i].pack(side="left")

def UpdateBoard():
    for i, b in enumerate(BoardValue):
        global btn
        btn[i].config(text=b)

def PlayMove(positionClicked):
    if BoardValue[positionClicked] == '-':
        BoardValue[positionClicked] = "X"
    else:
        BoardValue[positionClicked] = '-'
    UpdateBoard()

DrawBoard()
window.mainloop()