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Articles by Dev Prakash Sharma
Page 3 of 42
How to stop copy, paste, and backspace in text widget in tkinter?
The Text widget in tkinter accepts multiline user input and supports various operations like copying, pasting, and deleting text. Sometimes you may need to disable these shortcuts for security or user interface reasons. To disable copy, paste, and backspace operations in a Text widget, you need to bind specific key events to event handlers that return 'break'. This prevents the default behavior from executing. Syntax text_widget.bind('', lambda event: 'break') Example Here's how to disable copy (Ctrl+C), paste (Ctrl+V), and backspace operations ? # Import the required library from tkinter import * ...
Read MoreHow to get the index of selected option in Tkinter Combobox?
The Tkinter Combobox widget allows you to create dropdown lists where users can select items. To get the index of the selected option, you can use the current() method, which returns the zero-based index of the selected item. Syntax combobox.current() The current() method returns an integer representing the index position of the selected item in the combobox values list. Example Here's a complete example that demonstrates how to get the index of selected option in a Tkinter Combobox ? import tkinter as tk from tkinter import ttk # Create main ...
Read MoreHow to get an Entry box within a Messagebox in Tkinter?
Tkinter's messagebox library provides various dialog functions, but none directly combine a message with an entry field. To create an entry box within a messagebox-like dialog, you can use the askstring function from tkinter.simpledialog. This creates a simple dialog window that prompts the user for text input. Using askstring() Method The askstring() function takes two main parameters: the dialog title and the prompt message displayed above the entry field ? # Import the required library from tkinter import * from tkinter.simpledialog import askstring from tkinter.messagebox import showinfo # Create an instance of tkinter frame and ...
Read MoreHow to attach a vertical scrollbar to a Treeview using Tkinter?
The Treeview widget in Tkinter displays hierarchical data in a table format with columns. When displaying large datasets, a vertical scrollbar becomes essential for navigation. This tutorial shows how to attach a vertical scrollbar to a Treeview widget. Basic Treeview with Scrollbar To add a scrollbar, create a Scrollbar widget and link it to the Treeview using yscrollcommand and command properties − import tkinter as tk from tkinter import ttk # Create main window root = tk.Tk() root.title("Treeview with Scrollbar") root.geometry("500x300") # Create Treeview widget tree = ttk.Treeview(root, columns=("Name", "Age"), show="headings", height=6) tree.heading("#1", text="Name") ...
Read MoreHow to disable multiselection on Treeview in tkinter?
The Treeview widget displays hierarchical data in columns and rows. By default, it allows multiple item selection, but you can disable this by setting selectmode="browse" to allow only single selection. Syntax ttk.Treeview(parent, selectmode="browse", **options) Parameters The selectmode parameter accepts these values − "extended" − Default mode, allows multiple selection "browse" − Single selection mode "none" − Disables all selection Example Here's how to create a Treeview with single selection mode − # Import the required libraries from tkinter import * from tkinter import ttk # Create ...
Read MoreHow to clear the text field part of ttk.Combobox in tkinter?
The Combobox widget is a versatile tkinter widget that creates a dropdown list containing selectable values. When you need to clear the selected text from a combobox, you can use the set('') method to reset it to an empty state. Basic Syntax To clear a combobox text field ? combobox_widget.set('') Complete Example Here's a working example that demonstrates how to clear a combobox using a button ? # Import the required libraries from tkinter import * from tkinter import ttk # Create an instance of tkinter frame or window win ...
Read MoreHow do I open a website in a Tkinter window?
Tkinter offers many built-in functions and methods to help construct user-friendly applications. To open a webpage in a Tkinter window, you can use the pywebview library, which allows users to view HTML content in a native GUI window. Installing pywebview First, install the pywebview library using pip ? pip install pywebview Basic Implementation To create a window that displays web content, use the create_window() method to specify the window title and URL, then call webview.start() to launch the window ? import tkinter as tk import webview # Create an instance ...
Read MoreCreating a LabelFrame inside a Tkinter Canvas
Tkinter provides many built-in widgets for creating desktop applications. The LabelFrame widget creates a container with a labeled border, while Canvas provides a drawing surface. You can combine these by placing a LabelFrame inside a Canvas widget. A LabelFrame widget has two main components: The Title Bar − displays the label text at the top border The Content Area − contains child widgets like labels, buttons, or images Basic LabelFrame in Canvas Here's how to create a LabelFrame inside a Canvas widget ? from tkinter import * # Create main window ...
Read MoreHow to get a new API response in a Tkinter textbox?
APIs are extremely useful in implementing services or features in applications. They help establish connections between servers and clients, so when a client sends a request using one of the API methods to the server, the server responds with a status code (like 201 for successful response) to the client. You can make requests to any API using methods like GET, POST, PUT, or DELETE. If you want to create an application that needs to request data from publicly available APIs (for example, the Cat Facts API), you can use the requests module from Python's library. In this ...
Read MoreAdding coloured text to selected text in Tkinter
If we want to implement a text editor in an application that can accept multiline user input, then we can use the Tkinter Text widget. The Text widget in Tkinter is generally used to create a text editor for an application, where we can write text and perform operations like selecting, editing and creating a specific text in the application. If you want to highlight a text and provide a color to the highlighted text, then you can use the tag_add("start", "first", "second") method. The tag_add() method takes two arguments for selecting the specified text from the text widget. ...
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