Found 605 Articles for Tkinter

Tkinter is a Python GUI toolkit, which is widely known for developing full-fledged functional desktop applications. Tkinter provides many built-in libraries, widgets, and modules to develop any kind of application. You can use the factory and class library functions to implement additional functionality of the application.Since Tkinter is a cross-platform GUI library, an application programmed in Windows can run in macOS as well as Linux devices. However, some functions don't support cross-platform ability for which you have to refer to the additional factory method or function specified in the documentation.ExampleFor example, if we want to display a tkinter application in ... Read More

If you have ever wondered how the dialogboxes work in a Python application, then you probably end up hearing the filedialog module in Tkinter. The filedialog module contains a number of built-in functions which can be used to display various types of dialogs for dealing with files in the system.In most cases, we use the filedialog.askopenfilename() function to ask the user to browse and open a file from the system. Based on the selection of the filetype, the script is programmed to perform write or read operation.Once a file is opened, you can use the open(file, 'mode') function to open ... Read More

The Scale widget in tkinter allows you to create a visual scale slider object in your application which is used to specify the value using a specific scale. To implement the Scale object, you have to first create a constructor of Scale(root, **options). Here you can specify the properties and attributes of Scale such as command, background, label, length, orient, etc.Since the Scale widget is used to select specific values by dragging the slider, we can get the current value of the scale in a label widget. To retrieve the value of the Scale, use the get() method that returns ... Read More

To interact with the filesystem in a tkinter application, you can use the Tkinter filedialog module. It provides a way to deal with the files in the system. The filedialog module offers many built-in functions to help developers create a variety of file dialogs for the application. You can use any of the filedialog functions in order to implement a dialog in your application.The most commonly used function is filedialog.askopenfilename() which generally creates a dialog asking the user to open a file in the given program interface.ExampleSuppose we want to get a string or the filename which we open using ... Read More

While developing a Tkinter application, we often encounter cases where we have to perform some specific operation or event with the keystrokes (on keyboard). Tkinter provides a mechanism to deal with such events.You can use bind(, callback) function for each widget that you want to bind in order to perform a certain type of event. Whenever we bind a key with an event, the callback event occurs whenever a corresponding key is pressed.ExampleLet's consider an example. Using the bind("", callback) function, we can also bind all the number keys to display a message on the screen such that whenever a ... Read More

In Tkinter, users can input text using two basic text input widgets − the Text widget and the Entry widget. The Text widget is generally used to accept multiline user input, whereas in an Entry widget, the user can type only singleline text.You can customize these widgets and add additional functionality using built-in library functions and methods. To validate the input in an Entry widget, you can use the register() method. This method returns a string that can be used to call the function at later stages.To validate the input in an Entry widget, use the config(**options) method and pass ... Read More

The Canvas widget is one of the versatile widgets in Tkinter which is used to create illustrations, draw shapes, arcs, images, and other complex layouts in an application. To create a Canvas widget, you'll need to create a constructor of canvas(root, **options).You can use the factory functions to create text, images, arcs and define other shapes in the canvas. In some cases, if you want to create another canvas using the same canvas to keep the application workflow consistent, then you can create a button to call an event that creates another canvas.To understand this, let us create a canvas ... Read More

We are already familiar with input forms where various single Entry fields are created to capture the user input. With Tkinter, we can also create a single input field using the Entry widget. Each character in the Entry field that the user enters is indexed. Thus, you can retrieve this index to get the current position of the cursor by using the index() method. To retrieve the current location of the cursor, you can pass the INSERT argument in this function.Example# Import required libraries from tkinter import * from tkinter import ttk # Create an instance of tkinter window ... Read More

Tkinter offers several built-in functions and class library methods to build components and user-actionable items of an application. filedialog is one of the tkinter modules that provides classes and library functions to create file/directory selection windows. You can use filedialog where you need to ask the user to browse a file or a directory from the system.You can also specify the location of the directory from where a particular file should be picked up. To display the filedialog that starts from a particular location, use the initialdir = argument in the static factory function askopenfilename(initialdir=). This function creates a ... Read More

Padding enhances the layout of the widgets in an application. While developing an application in Tkinter, you can set the padding in two or more ways. The geometry manager in Tkinter allows you to define padding (padx and pady) for every widget (label, text, button, etc). To set the application component and its properties look and feel consistent, you can define the values in a variable. The values can be further used to define the padding of the widgets. Let us understand this with an example.ExampleIn the following example, we will create a frame inside which the widgets are defined. ... Read More