tkinter – Page 14 – Tarik Billa

How to update the image of a Tkinter Label widget?

February 26, 2023 by Tarik

The method label.configure does work in panel.configure(image=img). What I forgot to do was include the panel.image=img, to prevent garbage collection from deleting the image. The following is the new version: import Tkinter as tk import ImageTk root = tk.Tk() img = ImageTk.PhotoImage(Image.open(path)) panel = tk.Label(root, image=img) panel.pack(side=”bottom”, fill=”both”, expand=”yes”) def callback(e): img2 = ImageTk.PhotoImage(Image.open(path2)) panel.configure(image=img2) … Read more

How to specify where a Tkinter window opens?

February 25, 2023 by Tarik

This answer is based on Rachel’s answer. Her code did not work originally, but with some tweaking I was able to fix the mistakes. import tkinter as tk root = tk.Tk() # create a Tk root window w = 800 # width for the Tk root h = 650 # height for the Tk root … Read more

Equivalent function for xticks for an AxesSubplot object

February 24, 2023 by Tarik

you can use instead: axes.set_xticks(ticks, minor=False) and axes.set_xticklabels(labels, fontdict=None, minor=False)

Tkinter: How to use threads to preventing main event loop from “freezing”

February 22, 2023 by Tarik

When you join the new thread in the main thread, it will wait until the thread finishes, so the GUI will block even though you are using multithreading. If you want to place the logic portion in a different class, you can subclass Thread directly, and then start a new object of this class when … Read more

What is the difference between the widgets of tkinter and tkinter.ttk in Python?

February 22, 2023 by Tarik

The widgets in tkinter are highly and easily configurable. You have almost complete control over how they look – border widths, fonts, images, colors, etc. ttk widgets use styles to define how they look, so it takes a bit more work if you want a non-standard button. ttk widgets are also a little under-documented. Understanding … Read more

How to make a Tkinter window jump to the front?

February 11, 2023 by Tarik

Assuming you mean your application windows when you say “my other windows”, you can use the lift() method on a Toplevel or Tk: root.lift() If you want the window to stay above all other windows, use: root.attributes(“-topmost”, True) Where root is your Toplevel or Tk. Don’t forget the – infront of “topmost”! To make it … Read more

Using Tkinter in python to edit the title bar

February 9, 2023 by Tarik

If you don’t create a root window, Tkinter will create one for you when you try to create any other widget. Thus, in your __init__, because you haven’t yet created a root window when you initialize the frame, Tkinter will create one for you. Then, you call make_widgets which creates a second root window. That … Read more

List of All Tkinter Events

February 5, 2023 by Tarik

A general list for Bindings and Events can be found on effbot.org or in the docs provided by New Mexico Tech whereas the name of several keys are listed here in addition to the original documentation. Here’s a summary of the most common events with some keypress names explained: Event Description <Button-1> Button 1 is … Read more

Why does Tkinter image not show up if created in a function?

February 3, 2023 by Tarik

The variable photo is a local variable which gets garbage collected after the class is instantiated. Save a reference to the photo, for example: self.photo = tkinter.PhotoImage(…) If you do a Google search on “tkinter image doesn’t display”, the first result is this: Why do my Tkinter images not appear? (The FAQ answer is currently … Read more