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Articles by Dev Prakash Sharma
Page 28 of 42
How to hide or disable the mouse pointer in Tkinter?
There are several ways to disable and enable a particular widget in a Tkinter application. However, if we want to control the Tkinter window components such as mouse cursor, control icons, toolbars, then Tkinter provides several built-in functions which can be used to configure the Tkinter window objects.To hide or disable the mouse pointer for a particular Tkinter application, then we can configure the mouse property using config(mouse= "none") method. It can be invoked for the master or root window.Example#Import tkinter library from tkinter import * from tkinter import ttk #Create an instance of Tkinter frame or window win= Tk() ...
Read MoreHow to have image and text in one button in Tkinter?
We can load the images in a Tkinter application using the PhotoImage(image location) function, which takes the image location as the parameter and displays the image on the window object. However, when we try to add an image to the button, it generally appears on the button while hiding the button text. Therefore, to make the button text and pictures relative to each other, we typically use the compound property. It takes one of four positional arguments – LEFT, RIGHT, TOP, and BOTTOM, each defining the image’s position on the button.ExampleIn this example, we have used this image to make ...
Read MoreHow to create a child window and communicate with parents in Tkinter?
Unlike other Python libraries, Tkinter has many features that are used to create a full-fledged application. It supports multiple window operations and threading for processing the operation on Windows.Following the thread, we will create an application that will pull the data from root window and put it into a child window. The concept of child window can be referred to as Dialog Boxes which present some information to the user during the happening of an event. The child window in Tkinter is created very easily by using Toplevel(root) constructor.ExampleIn this example, we will create an entry widget along with a ...
Read MoreHow to create a borderless fullscreen application using Python-3 Tkinter?
In order to make a Tkinter window borderless and full-screen, we can use the utility method attributes(‘-fullscreen’, True). Tkinter windows can be configured using functions and methods defined in the Tkinter library.Another similar method Tkinter provides to make the application window full-screen is, overrideredirect(True). This method can be invoked only if the application needs to resize in its defined width and height only.Example#Import the required Libraries from tkinter import * #Create an instance of Tkinter frame win= Tk() #Set the Geometry win.geometry("750x250") #Full Screen Window win.attributes('-fullscreen', True) def quit_win(): win.destroy() #Create a Quit Button button=Button(win, text="Quit", font=('Comic Sans', 13, ...
Read MoreHow can I create a dropdown menu from a List in Tkinter?
Let us suppose we want to create a dropdown menu of a list in an application using tkinter. In this case, we can use the Tkinter OptionMenu(win, menu_to_set, options) function.First, we will instantiate an object of StringVar(), then we will set the initial value of the dropdown menu. We will create the dropdown menu by creating an object of OptionMenu and passing the value of window, menu object, and options which are to be displayed.Example#Import the required libraries from tkinter import * #Create an instance of tkinter frame win= Tk() #Define the size of window or frame win.geometry("715x250") ...
Read MoreHow to add an image in Tkinter?
Images are very useful objects in any application. We can process Images in a Tkinter application using the Pillow or PIL package in Python. There are several built-in functions such as loading an image, extracting an image, configuring the image pane, etc.ExampleIn this example, we will add by asking the user to select an image from a dialog box and then, display it using the Label widget.#Import the Tkinter library from tkinter import * from tkinter import ttk from tkinter import filedialog from PIL import Image, ImageTk #Create an instance of Tkinter frame win= Tk() #Define the geometry win.geometry("750x350") win.title("Image ...
Read MoreHow do you check if a widget has a focus in Tkinter?
Let us assume that we want to check if a particular widget has a focused set or not. The only way to check the widget focus is to use the utility method focus_get(). It returns the object containing the widget’s information which is currently focused on, during the program’s execution. We will use the focus_get() method to find the active widget during our program’s execution.ExampleIn this example, we have created an Entry widget that will get its focus when we press the key. The focus_get() method will return the current widget’s information which is active.#Import the Tkinter library from ...
Read MoreHow do I get an event callback when a Tkinter Entry widget is modified?
Callback functions in Tkinter are generally used to handle a specific event happening in a widget. We can add an event callback function to the Entry widget whenever it gets modified. We will create an event callback function by specifying the variable that stores the user input. By using the trace("mode", lambda variable, variable: callback()) method with the variable, we can trace the input on the Label widget in the window.Example#Import the Tkinter library from tkinter import * #Create an instance of Tkinter frame win= Tk() #Define the geometry win.geometry("750x250") def callback(var): content= var.get() Label(win, text=content).pack() #Create an ...
Read MoreHow to change the font on ttk.Entry in Tkinter?
There are times when a user wants to insert the information like Name, contact number, Email, address, etc. Tkinter has a simple way to handle these types of inputs through its Entry widgets. Tkinter Entry widgets can be styled using the ttk package.To change other properties of the Entry widgets such as font properties, text-size, and font-style, we can use the font(‘font-family font-size font-style’) attribute. We can specify the font property in the entry constructor.Example#Import tkinter library from tkinter import * from tkinter import ttk #Create an instance of tkinter frame or window win= Tk() #Set the geometry of tkinter ...
Read MoreHow can I resize the root window in Tkinter?
In this example, we will see how to resize a tkinter window using the geometry manager. Tkinter geometry manager is generally used to configure the width and height of a tkinter window.The geometry(width, height)method takes width and height as instances and resizes the window accordingly. We can also define the position of the tkinter window by adding geometry(width x height, X, Y) where x and y are horizontal and vertical positions of the window.Example#Import tkinter library from tkinter import * from tkinter import ttk #Create an instance of tkinter frame or window win= Tk() #Set the geometry of tkinter frame ...
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