Let's explore how to use dialogs and message boxes in Tkinter step by step. Tkinter provides several built-in dialogs and message boxes that can be used to interact with the user. We'll cover the following:
Message boxes are used to display information to the user. Tkinter provides several types of message
boxes: showinfo, showwarning, showerror,
askquestion, askokcancel, askyesno, and
askretrycancel.
showinfo Message Box
import tkinter as tk
from tkinter import messagebox
def show_info_message():
messagebox.showinfo("Information", "This is an information message.")
# Create the main window
root = tk.Tk()
root.title("Message Box Example")
root.geometry("300x200")
# Create a Button to show the message box
button = tk.Button(root, text="Show Info", command=show_info_message)
button.pack(pady=20)
# Run the application
root.mainloop()
messagebox.showinfo("Title", "Message"): Displays an information message box with
the given title and message.askyesno Message Box
import tkinter as tk
from tkinter import messagebox
def ask_yes_no():
result = messagebox.askyesno("Question", "Do you want to proceed?")
label.config(text=f"Response: {'Yes' if result else 'No'}")
# Create the main window
root = tk.Tk()
root.title("Message Box Example")
root.geometry("300x200")
# Create a Button to ask the question
button = tk.Button(root, text="Ask Yes/No", command=ask_yes_no)
button.pack(pady=20)
# Create a Label to display the response
label = tk.Label(root, text="Response: None")
label.pack(pady=10)
# Run the application
root.mainloop()
messagebox.askyesno("Title", "Message"): Displays a Yes/No question message box and
returns True for Yes and False for No.File dialogs allow users to select files or directories from the file system. Tkinter provides
askopenfilename, asksaveasfilename, askopenfilenames, and
askdirectory.
askopenfilename
import tkinter as tk
from tkinter import filedialog
def open_file():
file_path = filedialog.askopenfilename(title="Open File", filetypes=[("Text Files", "*.txt"), ("All Files", "*.*")])
label.config(text=f"Selected File: {file_path}")
# Create the main window
root = tk.Tk()
root.title("File Dialog Example")
root.geometry("300x200")
# Create a Button to open the file dialog
button = tk.Button(root, text="Open File", command=open_file)
button.pack(pady=20)
# Create a Label to display the selected file
label = tk.Label(root, text="Selected File: None")
label.pack(pady=10)
# Run the application
root.mainloop()
filedialog.askopenfilename(title="Title", filetypes=[("Description", "*.extension")]):
Opens a file dialog to select a file and returns the file path.asksaveasfilename
import tkinter as tk
from tkinter import filedialog
def save_file():
file_path = filedialog.asksaveasfilename(title="Save File", defaultextension=".txt", filetypes=[("Text Files", "*.txt"), ("All Files", "*.*")])
label.config(text=f"Save File As: {file_path}")
# Create the main window
root = tk.Tk()
root.title("File Dialog Example")
root.geometry("300x200")
# Create a Button to open the save file dialog
button = tk.Button(root, text="Save File", command=save_file)
button.pack(pady=20)
# Create a Label to display the file path to save
label = tk.Label(root, text="Save File As: None")
label.pack(pady=10)
# Run the application
root.mainloop()
filedialog.asksaveasfilename(title="Title", defaultextension=".extension", filetypes=[("Description", "*.extension")]):
Opens a save file dialog and returns the selected file path.The color chooser dialog allows users to select a color.
askcolor
import tkinter as tk
from tkinter import colorchooser
def choose_color():
color = colorchooser.askcolor(title="Choose Color")
if color[1] is not None:
label.config(text=f"Selected Color: {color[1]}", bg=color[1])
# Create the main window
root = tk.Tk()
root.title("Color Chooser Example")
root.geometry("300x200")
# Create a Button to open the color chooser dialog
button = tk.Button(root, text="Choose Color", command=choose_color)
button.pack(pady=20)
# Create a Label to display the selected color
label = tk.Label(root, text="Selected Color: None")
label.pack(pady=10)
# Run the application
root.mainloop()
colorchooser.askcolor(title="Title"): Opens a color chooser dialog and returns a
tuple containing the RGB and hexadecimal color value.Dialogs and message boxes in Tkinter provide a way to interact with the user through simple,
pre-defined dialogs. You can use message boxes (showinfo, askyesno, etc.)
for showing messages or asking questions, file dialogs (askopenfilename,
asksaveasfilename, etc.) for file selection, and the color chooser
(askcolor) for selecting colors. These tools help create more interactive and
user-friendly applications.