将自定义属性添加到 Tk 小部件 [英] Add custom attributes to a Tk widget

问题描述

我的主要目标是向小部件添加诸如隐藏标签或字符串之类的内容，以保存其上的简短信息.我想到了创建一个新的自定义 Button 类(在本例中我需要按钮)，它继承了所有旧选项.

My main target is to add something like an hidden tag or string to a widget, to save short information on it. I got the idea of creating a new custom Button class (in this case I need buttons), which inherits all the old options.

这是代码:

form tkinter import *

class NButton(Button):
    def __init__(self, master, tag=None, *args, **kwargs):
        Button.__init__(self, master, *args, **kwargs)
        self.master, self.tag = master, tag

创建新的 NButton 实例时没有问题:

No trouble when creating a new NButton instance:

aria1 = NButton(treewindow, bd=2, relief=GROOVE, text="Trasmissione\naerea 1", bg="#99c4ff", tag="aria 1")
aria1.place(x=20, y=20)

尝试获取tag的值时出现问题:

The problems come out when I try to get the value of tag:

aria1["tag"]

它返回:

_tkinter.TclError: 未知选项-tag"

_tkinter.TclError: unknown option "-tag"

我该如何解决这个问题?

How can I solve this?

推荐答案

您需要访问自定义选项作为对象属性:

You need to access your custom options as object attributes:

print(aria1.tag)

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