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Python Articles
Page 541 of 852
How to resize the background image to window size in Tkinter?
In order to work with images, Python Library provides Pillow or PIL package that enables applications to import images and perform various operations on them.Let us suppose that we want to resize an image dynamically to its window. In such case, we have to follow these steps −Open the Image in the Tkinter Application.Create a Canvas Widget and use create_image(**options) to place the loaded image in the canvas.Define a function to resize the loaded image.Bind the function with the parent window configuration.Example# Import the required libraries from tkinter import * from PIL import ImageTk, Image # Create an instance ...
Read MoreHow to change the thickness of a shape's outline on a Tkinter canvas?
Let us suppose we have created an oval on a Tkinter canvas. The task is to change the thickness of the oval's outline. To change the thickness of the outline, provide a border or outline to a rectangle, define the width property in the constructor and assign it an integer value. You can also define the outline property to set a color to the outline of the oval.Example#Import the required libraries from tkinter import * #Create an instance of Tkinter Frame win = Tk() #Set the geometry win.geometry("700x350") # Define a Canvas Widget canvas = Canvas(win, width=500, height=350) canvas.pack() ...
Read MoreHow to colorize the outline of a canvas rectangle in Tkinter?
Let us suppose we have created a rectangle on a Tkinter canvas. The task is to provide the rectangle with an outline that can have a color in it. To provide a border or outline to a rectangle, first define the outline property in the constructor and add a new color value to it.ExampleIn this example, we will create a rectangle on a Tkinter canvas and then apply a color to its outline.#Import the required libraries from tkinter import * #Create an instance of Tkinter Frame win = Tk() #Set the geometry win.geometry("700x350") # Define a Canvas ...
Read MoreHow do you create a Button on a Tkinter Canvas?
Canvas widget is one of the versatile widgets in the Tkinter library. You can use canvas to draw different shapes, arcs, and objects to animate within the canvas. To create a button on a Tkinter Canvas, simply pass the parent as the canvas in place of a parent in the Button constructor.ExampleIn this example, we will see how to create a Button inside a canvas widget.#Import the required libraries from tkinter import * from tkinter import ttk #Create an instance of Tkinter Frame win = Tk() #Set the geometry of Tkinter Frame win.geometry("700x350") #Define a function for ...
Read MoreHow to see if a widget exists in Tkinter?
To make a particular Tkinter application fully functional and operational, we can use as many widgets as we want. If we want to check if a widget exists or not, then we can use the winfo_exists() method. The method can be invoked with the particular widget we want to check. It returns a Boolean value where True(1) specifies that the widget exists in the application, and False(0) specifies that the widget doesn't exist in the application.Example# Import the required libraries from tkinter import * from tkinter import ttk # Create an instance of Tkinter Frame win = Tk() ...
Read MoreDetermine which Button was pressed in Tkinter
Buttons are very useful in many applications where user interaction is required. Let us suppose that we want to know which button is pressed in a given application. In order to get the information about the Button, we can use the callback function in the Button configuration. In the Callback function, we will use the print(test) function to print the button that is clicked.Example#Import the required libraries from tkinter import * from tkinter import ttk #Create an instance of Tkinter Frame win = Tk() #Set the geometry win.geometry("700x250") # Define function to get the information about the ...
Read MoreCreating a transparent background in a Tkinter window\\n\\n
Tkinter window provides many inbuilt functions and properties to help an application work seamlessly. They configure the GUI of the application as well.If we want to create a transparent window in an application, then we should have to define the color in the attributes('-transparentcolor', 'color' ) method. By providing the color of the window and widget, it will make the window transparent.Example#Import the Tkinter Library from tkinter import * #Create an instance of Tkinter Frame win = Tk() #Set the geometry of window win.geometry("700x350") #Add a background color to the Main Window win.config(bg = '#add123') #Create ...
Read MoreRunning multiple commands when a button is pressed in Tkinter
The Button widget provides a way to communicate through all the existing functionalities of an application. We can perform a certain action with the help of a Button that encapsulates the function and the objects. However, there might be cases when we want to perform multiple operations with a single button. This can be achieved by defining the lambda functions which target multiple events or callback in the application.ExampleIn this example, we will add multiple events to a specific Button.#Import the Tkinter Library from tkinter import * #Create an instance of Tkinter Frame win = Tk() #Set the ...
Read MoreHow to delete all children's elements using Python's Tkinter?
Frames are very useful in a Tkinter application. If we define a Frame in an application, it means we have the privilege to add a group of widgets inside it. However, all these widgets are called Children of that particular Frame.Let us suppose that we want to remove all the children widgets defined in a frame. Then, first we have to get the focus on children using the winfo_children() method. Once we get the focus, we can delete all the existing children using destroy() method.Example#Import the Tkinter Library from tkinter import * #Create an instance of Tkinter Frame win ...
Read MoreHow to get the coordinates of an object in a Tkinter canvas?
Tkinter Canvas Widget provides GUI features to an application. It can be used to draw shapes, animate objects, and configure the existing items in a canvas. Whenever we create shapes, we have to provide the size and coordinates of the shapes in the Canvas item constructor. In order to return the coordinates of an item on the Canvas, we can use the coords(item) method. It returns a list with the coordinates of the shapes in the canvas widget.Examplefrom tkinter import * #Create an instance of tkinter frame win = Tk() #Set the geometry of Tkinter frame win.geometry("700x250") # Initialize a ...
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