更改标签上的文本 [英] Changing the text on a label

问题描述

我在使用键绑定更改标签或任何参数的值时遇到问题.这是我的代码:

I am having trouble with using a key binding to change the value of a label or any parameter. This is my code:

from tkinter import*

class MyGUI:
  def __init__(self):
    self.__mainWindow = Tk()
    #self.fram1 = Frame(self.__mainWindow)
    self.labelText = 'Enter amount to deposit'
    self.depositLabel = Label(self.__mainWindow, text = self.labelText)
    self.depositEntry = Entry(self.__mainWindow, width = 10)
    self.depositEntry.bind('<Return>', self.depositCallBack)
    self.depositLabel.pack()
    self.depositEntry.pack()

    mainloop()

  def depositCallBack(self,event):
    self.labelText = 'change the value'
    print(self.labelText)

myGUI = MyGUI()

当我运行它时，我点击输入框并按回车键，希望标签将值更改为更改值".然而，虽然它确实打印了该文本，但标签保持不变.

When I run this, I click the entrybox and hit enter, hoping that the label will change value to 'change the value'. However, while it does print that text, the label remains unchanged.

通过查看有关类似问题的其他问题，我已经想出了如何在课堂外处理其中的一些问题，但在课堂内进行时遇到了一些困难.

From looking at other questions on similar problems and issues, I have figured how to work with some of this outside a class, but I'm having some difficulties with doing it inside a class.

另外，顺便提一下，master"在 tkinter 中扮演什么角色?

Also, on a side note, what role does "master" play in tkinter?

推荐答案

self.labelText = 'change the value'

上面这句话让labelText改变了值，但不改变depositLabel的文本.

The above sentence makes labelText change the value, but not change depositLabel's text.

要更改 depositLabel 的文本，请使用以下设置之一:

To change depositLabel's text, use one of following setences:

self.depositLabel['text'] = 'change the value'

或

self.depositLabel.config(text='change the value')

这篇关于更改标签上的文本的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！