) Draw a GUI and write a program to show case how items can be added, deleted, and countedin a list box control.
Question
Draw a GUI and write a program to showcase how items can be added, deleted, and counted in a list box control.
Solution
Here is a simple example of how you can create a GUI with Python using the tkinter library. This program will allow you to add, delete, and count items in a list box.
First, let's create the GUI:
import tkinter as tk
from tkinter import messagebox
# Create the main window
root = tk.Tk()
root.title("List Box Control")
# Create a listbox
listbox = tk.Listbox(root)
listbox.pack(pady=10)
# Create an entry box
entry = tk.Entry(root)
entry.pack(pady=10)
# Create functions to add, delete, and count items
def add_item():
listbox.insert(tk.END, entry.get())
entry.delete(0, tk.END)
def delete_item():
try:
# delete selected item
listbox.delete(listbox.curselection())
except:
messagebox.showinfo("Warning", "No item selected")
def count_items():
messagebox.showinfo("Count", f"Total items: {listbox.size()}")
# Create buttons to call the functions
add_button = tk.Button(root, text="Add Item", command=add_item)
add_button.pack(pady=10)
delete_button = tk.Button(root, text="Delete Item", command=delete_item)
delete_button.pack(pady=10)
count_button = tk.Button(root, text="Count Items", command=count_items)
count_button.pack(pady=10)
# Run the main loop
root.mainloop()
In this program:
- We first import the necessary libraries and create the main window.
- We then create a listbox and an entry box.
- We define three functions:
add_item
,delete_item
, andcount_items
. These functions are used to add an item to the listbox, delete the selected item from the listbox, and count the total number of items in the listbox, respectively. - We create three buttons and associate each button with one of the functions.
- Finally, we start the main loop to run the application.
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