检查列表中的哪个按钮已用bind tkinter按下 [英] check what button in a list has been pressed with bind tkinter

问题描述

我有一个按钮列表，当我运行一个函数时，我需要检查该列表中的哪个按钮被按下.

I have a list of buttons and when I run a function I need to check what button in that list was pressed.

import tkinter

root = tkinter.Tk()

def Function(event):
    print('The pressed button is:')

listOfButtons = []
Button = tkinter.Button(root, text="Button 1")
listOfButtons.append(Button)
Button.pack()
Button.bind("<Button-1>", Function)

Button = tkinter.Button(root, text="Button 2")
Button.pack()
listOfButtons.append(Button)
Button.bind("<Button-1>", Function)

root.mainloop()

推荐答案

遍历列表中的所有按钮，并检查按钮是否为event.widget :

Iterate over all buttons in the list, and check if button is event.widget:

def Function(event):
    for button in listOfButtons:
        if button is event.widget:
            print(button['text'])
            return

正如@tobias_k提到的-它太复杂了.您已经有一个 button 作为 event.widget .因此解决方案很简单，如 print(event.widget ['text']).但是，如果不仅可以通过单击按钮调用 Function ，或者有多个带有按钮的列表或其他内容-这是必须检查的！

As @tobias_k mentioned - it's overcomlicated. You already has a button as event.widget. So solution is simple as print(event.widget['text']). However, if Function can be called not only from the button click or there're several lists with buttons/with whatever - it's a must to check!

另一方面，不仅可以通过鼠标左键单击按钮，因此 command 选项更好！

In other side, button can be pressed not only by the Left-mouse click, hence command option is better!

import tkinter

root = tkinter.Tk()

def Function(button):
    print(button['text'])


...
Button = tkinter.Button(root, text="Button 1")
Button.configure(command=lambda button=Button: Function(button))
...


Button = tkinter.Button(root, text="Button 2")
Button.configure(command=lambda button=Button: Function(button))
...

root.mainloop()

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