Python Articles - Page 511 of 1048

The Tkinter Menu widget is used to create a dropdown menu in an application. With menu widgets, we can select an item from the menu and run a specific task in the application.In many applications, we see a dotted separator line that separates the menu items in the menu. The separator separates the menu item of one type from another, and we can use it to visualize the hierarchy of the menu items. To create a separator among the menu items, you can use the add_separator() method.Example# Import the required libraries from tkinter import * from tkinter import ttk ... Read More

Consider a case for creating a GUI application such that when we click on the window with a mouse button, it stores the coordinates and draws a dot. Tkinter provides events that allow the user to bind the keys or buttons with the functions.To draw a dot on click event, we can follow these general steps −Create a canvas widget and pack it to display in the window.Define a function draw_dot() that works as the event when the user does the click event.Create a global variable that counts the number of clicks in the canvas.If the count becomes two, then ... Read More

Consider a case for creating a GUI application such that when we click on the window with a mouse button, it stores the coordinates and creates a line between two given points. Tkinter provides events that allow the user to bind the keys or buttons with the functions.To draw a line between two points, we can follow these general steps, Create a canvas widget and pack it to display in the window.Define a function draw_line() that works as the event when the user does the click event.Create a global variable that counts the number of clicks in the canvas.If the ... Read More

Tkinter Frame widget is very useful for grouping multiple widgets in a frame. It includes all the functions and properties that applies to the parent window.To create a Frame widget, we can instantiate an object of the Frame class. Once we define the Frame widget in the window, we can directly pick any widget and place it into the frame.ExampleIn this example, we've created a Frame widget and defined some widgets in it.# Import the required libraries from tkinter import * from tkinter import ttk # Create an instance of tkinter frame or window win=Tk() # Set the ... Read More

Tkinter events are executed at runtime and when we bind these events with a button or key, then we will get access to prioritize the event in the application.To bind the key with an event in Tkinter window, we can use bind('', callback) by specifying the key and the callback function as the arguments. Once we bind the key to an event, we can get full control over the events.Example# Import the required libraries from tkinter import * from PIL import Image, ImageTk # Create an instance of tkinter frame or window win=Tk() # Set the size ... Read More

To work with images in tkinter, Python provides PIL or Pillow toolkit. It has many built-in functions that can be used to operate an image of different formats.To open an image in a canvas widget, we have use create_image(x, y, image, **options) constructor. When we pass the Image value to the constructor, it will display the image in the canvas.Example# Import the required libraries from tkinter import * from PIL import Image, ImageTk # Create an instance of tkinter frame or window win=Tk() # Set the size of the window win.geometry("700x600") # Create a canvas widget canvas=Canvas(win, ... Read More

The Entry widget in tkinter is a basic one-line character Entry box that accepts single line user input. To configure the properties of the Entry widget such as its font-size and width, we can define an inline widget constructor.ExampleHere is an example of how you can define the font-size of the Entry widget.# Import the required libraries from tkinter import * from tkinter import ttk # Create an instance of tkinter frame or window win=Tk() # Set the size of the window win.geometry("700x350") # Create an Entry widget entry=Entry(win, width=35, font=('Georgia 20')) entry.pack() win.mainloop()OutputRun the above ... Read More

The frame widget in Tkinter works like a container where we can place widgets and all the other GUI components. To change the frame width dynamically, we can use the configure() method and define the width property in it.ExampleIn this example, we have created a button that is packed inside the main window and whenever we click the button, it will update the width of the frame.# Import the required libraries from tkinter import * from tkinter import ttk # Create an instance of tkinter frame or window win=Tk() # Set the size of the window win.geometry("700x350") ... Read More

We can use the Tkinter Label widget to display text and images. By configuring the label widget, we can dynamically change the text, images, and other properties of the widget.To dynamically update the Label widget, we can use either config(**options) or an inline configuration method such as for updating the text, we can use Label["text"]=text; for removing the label widget, we can use pack_forget() method.Example# Import the required libraries from tkinter import * from tkinter import ttk from PIL import ImageTk, Image # Create an instance of tkinter frame or window win=Tk() # Set the size of the ... Read More

A color gradient defines the range of position-dependent colors. To be more specific, if you want to create a rectangular scale in an application that contains some color ranges in it (gradient), then we can follow these steps −Create a rectangle with a canvas widget and define its width and height.Define a function to fill the color in the range. To fill the color, we can use hex values inside a tuple.Iterate over the range of the color and fill the rectangle with it.Example# Import the required libraries from tkinter import * from tkinter import ttk # Create an ... Read More