CODEWITHSUNDEEP
pythonpython-3.xtkintertoplevel
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Reputation: 33

How to call a function when clicking on an image in Tkinter?

I know it's easy to call a function with Tkinter buttons by using command, but it doesn't work the same way with images. My question is pretty simple I believe, how can I call a function by clicking on an image?

Here's the code. I want to click on picture and that will call the make_newwindow function.

from tkinter import *
import tkinter as tk

def make_newwindow():
    global newwindow
    root.withdraw()
    newwindow = tk.Toplevel()
    newwindow.title('Nível da grama região 2')
    newwindow.geometry('580x520')

root = tk.Tk()
root.title('Nível da grama região 1')
root.geometry("580x520")
picture = PhotoImage(file="picture.png")
label0 = Label(root, image=picture, borderwidth=0, highlightthickness=0)
label0.place(x=62, y=205)


root.mainloop()

Upvotes: 1

Views: 2584

Answers (2)

martineau
martineau

Reputation: 123423

In my opinion the simplest way to do it would be to attach the image to a Button instead of a Label widget, because then all you would need to do is specify a command= argument referencing the function you want to be called when it's clicked.

Here's what I mean:

import tkinter as tk

def make_newwindow():
    global newwindow

    raiz.withdraw()
    newwindow = tk.Toplevel()
    newwindow.title('Nível da grama região 2')
    newwindow.geometry('580x520')

raiz = tk.Tk()
raiz.title('Nível da grama região 1')
raiz.geometry("580x520")

picture = tk.PhotoImage(file="picure.png")
btn0 = tk.Button(raiz, image=picture, borderwidth=0, highlightthickness=0,
                 command=make_newwindow)
btn0.place(x=62, y=205)

raiz.mainloop()

If you really want to use a Label for some reason, you can call the universal bind() widget method to attach your function to mouse button-1 click events.

To do that, change the code above so it creates a Label (like your code does), but also calls bind() as illustrated. Note how a callback function is being created dynamically via a lambda expression. This is needed because your make_newwindow() doesn't accept any arguments. However tkinter event-handler callback functions are all passed an event argument (see Events and Bindings). Since it's not needed here, the argument is simply ignored and has been given the name _ (the Python convention for such things).

...
picture = tk.PhotoImage(file="picure.png")
label0 = tk.Label(raiz, image=picture, borderwidth=0, highlightthickness=0)
label0.place(x=62, y=205)
label0.bind('<Button-1>', lambda *_: make_newwindow())  # Create and bind callback func.

raiz.mainloop()

Upvotes: 1

nonamer92
nonamer92

Reputation: 1917

how about this? Here's the complete code that works

import tkinter as tk
from tkinter import *


def make_newwindow(data):
    global newwindow
    root.withdraw()
    newwindow = tk.Toplevel()
    newwindow.title('Nível da grama região 2')
    newwindow.geometry('580x520')


root = tk.Tk()
root.title('Nível da grama região 1')
root.geometry("580x520")
picture = PhotoImage(file="Capture001.png")
label0 = Label(root, image=picture, borderwidth=0, highlightthickness=0)
label0.place(x=62, y=205)


label0.pack()
label0.bind('<Button-1>', func=make_newwindow)


root.mainloop()

the data is the information about the even that occured

Upvotes: 0

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