Found 605 Articles for Tkinter

Validating the content is a necessary part of any featured application where we allow only the required data to be processed. An Entry Widget in tkinter is used to display single line text Input. However, we can validate the Entry widget to accept only digits or alphabets.Let us first create an Entry widget that accepts only digits input. So initially, we will create an Entry widget and using register(callback) function, we will call to validate the Entry widget which validates whenever a key is stroked. It returns a string that can be used to call a function. Then, calling the ... Read More

Tkinter Text widget is used to create text fields that accept multiline user inputs. Let us suppose that in a text widget, we want to highlight some text. In order to highlight a specific text written in the text widget, tkinter provides the tag_add(tag, i, j) method. It adds tags to the specific text by defining the indexes, i and j.ExampleIn this example, we will create a window application that contains some text and a button which can be triggered to highlight the text.#Import tkinter library from tkinter import * #Create an instance of tkinter frame win= Tk() win.geometry("750x450") #Define a ... Read More

Tkinter provides a variety of input widgets such as entry widget, text widget, listbox, combobox, spinbox, checkbox, etc. Checkboxes are used for taking validity input and the state gets active whenever the user clicks on the checkbutton. In terms of a particular application, we can enable and disable the state of CheckButtons by using the state property.Example#Import the required library from tkinter import* from tkinter import ttk #Create an instance of tkinter frame win= Tk() #Set the geometry win.geometry("750x250") #Create CheckButtons chk= ttk.Checkbutton(win, text="Python") chk.pack() chk.config(state=DISABLED) win.mainloop()OutputRunning the example code will display a window with a check button that is ... Read More

There are various attributes and properties in each tkinter widget to help us extend the functionality of the application. Tkinter Button widgets can be enabled and disabled by defining its state in the Button Object. The state attribute generally accepts two values Normal and Disabled which are used for enabling and disabling the button, respectively.Example#Import necessary Library from tkinter import * from tkinter import ttk from tkinter.filedialog import asksaveasfile #Create an instance of tkinter window win= Tk() #Set the geometry of tkinter window win.geometry("750x250") #Define the function to change the value in label widget def change_text(label):    label.configure(text= "Hey, I ... Read More

In this example, we will create a timer using Python Tkinter. For displaying time, we will use the Time Module in Python.Initially, we will follow these steps to create the timer, Create three entry widget each for Hours, Minute and Seconds and set the value ‘00’ by default.Create a Button for setting the timer. It will call the function countdowntimer().Define a function countdowntimer() which does update once we click on the button to propagate the time.Example#Import the required library from tkinter import * import time #Create an instance of tkinter frame win = Tk() win.geometry('750x300') win.resizable(False, False) #Configure the background ... Read More

Tkinter Label widgets are generally used to display text or images. In this example, we will see how to add a hyperlink on a Label widget in an application.In order to add a hyperlink, we can bind the label text with a button that makes it clickable. The open_new(url) method is used to define the function that opens a web browser to follow the link. The open_new(url) method is defined in the webbrowser module in Python which can be imported in the notebook using 'import webbrowser'.Example#Import the required libraries from tkinter import * import webbrowser #Create an instance of ... Read More

Tkinter window is the native component of tkinter application that contains some frames, a group of widgets, and some other elements. A Tkinter frame has a group of too many widgets.Let us suppose that we have created a frame with some widgets and now we want to rename the title of the application. Frame titles are a necessary part of any application. We can change the title of the frame using the title("title") method.ExampleIn this example, we will create an application that will contain an entry widget and a button. The button is used to rename the title of the ... Read More

Tkinter Button Widgets are a general way to provide Event Handling in a variety of applications. Sometimes, we may need to style the buttons which are defined in an application. In order to add styling in the button widgets, first create an instance of Button widget using a variable. Then, add some property like fontfamily, font-size, padding, etc. into it. The most general way to resize the button is by resizing the text in it.ExampleIn this example, we have created a button that can be resized by changing the value in the 'font' property.#Import tkinter library from tkinter import * ... Read More

Tkinter widgets have a consistent look and style across all the platforms and operating systems. Ttk works like CSS in an HTML script. It has many inbuilt functions, modules and methods that add style to a regular tkinter widget. Tkinter ttk buttons generally have a default color scheme, thus we can change the background color of these buttons by configuration method.ExampleIn this example, we will create a button which when pressed will change its style.#Import the necessary library import itertools from tkinter import * from tkinter import ttk #Create an instance of tkinter window win = Tk() #Set the geometry ... Read More

Tkinter Entry and text widgets are used to create single and multiline text input fields. In order to change the color of the cursor, we can specify the insertbackground property by assigning the color of the cursor.ExampleIn this example, we have created the text field and we have changed the color of the cursor by defining the insertbackground property.#Import the tkinter library from tkinter import * #Create an instance of tkinter frame win= Tk() win.geometry("750x250") #Create a text field text= Text(win) text.configure(bg= 'SteelBlue3', insertbackground='red') text.pack() win.mainloop()OutputNow, write something in the text field to see the reflected color of the cursor.Read More