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How to bind multiple widgets with one "binding" in Tkinter?

I am wondering how to link multiple widgets with a single “binding”.

For example:

I have three buttons, and I want to change their color after hovering.

from Tkinter import *

def SetColor(event):
    event.widget.config(bg="red")
    return

def ReturnColor(event):
    event.widget.config(bg="white")
    return

root = Tk()

B1 = Button(root,text="Button 1", bg="white")
B1.pack()

B2 = Button(root, text="Button2", bg="white")
B2.pack()

B3 = Button(root, text= "Button 3", bg="white")
B3.pack()

B1.bind("<Enter>",SetColor)
B2.bind("<Enter>",SetColor)
B3.bind("<Enter>",SetColor)

B1.bind("<Leave>",ReturnColor)
B2.bind("<Leave>",ReturnColor)
B3.bind("<Leave>",ReturnColor)

root.mainloop()

And my goal is to have only two bindings (for the events "Enter" and "Leave") instead of six, as indicated above.

Thanks for any ideas.

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2 answers

Executing the same object for multiple objects? Sounds like a loop forto me.

for b in [B1, B2, B3]:
    b.bind("<Enter>", SetColor)
    b.bind("<Leave>", ReturnColor)

You can continue and distract your entire fragment:

for s in ["button 1", "button 2", "button 3"]:
    b=Button(root, text=s, bg="white")
    b.pack()
    b.bind("<Enter>", SetColor)
    b.bind("<Leave>", ReturnColor)

( ). , , for.

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import Tkinter as tk

class Example(tk.Frame):
    def __init__(self, *args, **kwargs):
        tk.Frame.__init__(self, *args, **kwargs)

        # add bindings to a new tag that we're going to be using
        self.bind_class("mytag", "<Enter>", self.on_enter)
        self.bind_class("mytag", "<Leave>", self.on_leave)

        # create some widgets and give them this tag
        for i in range(5):
            l = tk.Label(self, text="Button #%s" % i, background="white")
            l.pack(side="top")
            new_tags = l.bindtags() + ("mytag",)
            l.bindtags(new_tags)

    def on_enter(self, event):
        event.widget.configure(background="bisque")

    def on_leave(self, event):
        event.widget.configure(background="white")

if __name__ == "__main__":
    root = tk.Tk()
    view = Example()
    view.pack(side="top", fill="both", expand=True)
    root.mainloop()

bindtags: fooobar.com/questions/1019897/...

, bindtags effbot .

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