Let us consider a case where we want to change the default font of a Tkinter application. To apply the font and setting it as the default font for a particular application, we have to use option_add(**options) method where we specify a property such as background color, font, etc. The changes made after defining the method will force all the widgets to inherit the same property.ExampleIn the given script, we have set a default font for the application such that it can be used for all the widgets defined in the application.#Import the required libraries from tkinter import * ... Read More

We need menubars in applications where user interaction is required. Menus can be created by initializing the Menu(parent) object along with the menu items. A popup Menu can be created by initializing tk_popup(x_root, y_root, False) which ensures that the menu is visible on the screen. Now, we will add an event which can be triggered through the Mouse Button (Right Click). The grab_release() method sets the mouse button release to unset the popup menu.Example#Import the required libraries from tkinter import * from tkinter import ttk #Create an instance of Tkinter frame win = Tk() #Set the geometry of the Tkinter library ... Read More

Tkinter has many feature attributes and properties to frame the structure of an application and configure the widget. In this article, we will see how to set Tkinter widgets with a transparent background. The wm_attributes('-transparentcolor', 'color') method is used for providing the transparent background to the widget.ExampleIn this example, we will create a Label widget with transparent background.#Import the required libraries from tkinter import * #Create an instance of Tkinter Frame win = Tk() #Set the geometry win.geometry("700x350") #Adding transparent background property win.wm_attributes('-transparentcolor', '#ab23ff') #Create a Label Label(win, text= "Hello World!", font= ('Helvetica 18'), bg= '#ab23ff').pack(ipadx= 50, ... Read More

A Menu Bar contains vertically stacked menu items. We can create a Menu bar by initializing the object of Menu(root). Whenever we initialize a Menu bar in an application, it displays a line separator at the top of the Menu Bar.To remove the separator or the dashed line from the Menu, we can use the tearoff property. It can be created by defining the 'tearoff = off' property.Example#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("750x250") win.title("Editor") # Adding ... Read More

Tkinter widgets are customizable by specifying their properties, for example, width, height, position, background color, etc. To position the Tkinters widgets, we can use place() geometry manager, where we will specify the anchor property. It can take (NW, N, NE, W, CENTER, E, SW, S, SE) as the position of the widget.ExampleIn this example, we have forced a Label widget to the center of the window by specifying the anchor property.#Import the required libraries from tkinter import * #Create an instance of Tkinter Frame win = Tk() #Set the geometry win.geometry("700x350") #Set the default color of the window win.config(bg='#4fe3a5') ... Read More

Tkinter widgets are supposed to be present in the Tkinter application window. All the widgets can be configured and customized by using predefined properties or functions.To get the width of a widget in a Tkinter application, we can use winfo_width() method. It returns the width of the widget which can be printed later as the output.Example#Import the required libraries from tkinter import * #Create an instance of Tkinter Frame win = Tk() #Set the geometry win.geometry("700x350") #Set the default color of the window win.config(bg='#aad5df') #Create a Label to display the text label=Label(win, text= "Hello World!", font= ... Read More

OpenCV is an Open Source Computer Vision library in Python which is widely used for Research purposes in Artificial Intelligence and Machine Learning. Computer Vision Library such as OpenCV deals with image processing. We can use OpenCV to read an image and further use it for development.Let us suppose that we want to create an application that reads an image and displays it in the window using OpenCV.Install OpenCV by using the following command −pip install opencv-pythonNext, follow the steps given below −Install OpenCV in the environment and import the library using import cv2.Import NumPy and PIL (Pillow Package) for image calculation.Load ... Read More

Tkinter toplevel class contains toplevel window which is a child window other than the main window. Whenever we create a toplevel window, it just appears above the main window along with the widgets defined in it.To keep the window toplevel window focused, we can use grab_set() method. It always keeps the toplevel window above all the other windows.Example#Import the tkinter library from tkinter import * #Create an instance of tkinter frame win = Tk() win.geometry("700x350") def open_win():    top = Toplevel(win)    top.geometry("700x250")    Label(top, text= "Hey Folks!", font= ('Helvetica 14 bold')).pack()    top.grab_set() #Create a Label to print the ... Read More

To convert a standard Tkinter application into a window executable file, we generally use thePyintsaller package. It converts the application file into an executable application. However, we notice that when we open the executable (or .exe) file, it displays a command shell before opening the application window. We can hide or avoid the console by specifying pyinstaller --oneline filename --windowed command.ExampleIn this example, we will create an .exe file of the following program using PyInstaller.app.py#Import the required libraries from tkinter import * #Create an instance of Tkinter Frame win = Tk() #Set the geometry win.geometry("700x350") #Set the ... Read More

To remove the default icon of the Tkinter window, we can use wm_attributes('type', 'value') method by specifying the type of property. In the following example, we will use '-toolwindow', a Boolean value that removes the icon associated with the title bar of the application.Example#Import the tkinter library from tkinter import * #Create an instance of tkinter frame win = Tk() win.geometry("700x350") #Create a Label to print the Name label= Label(win, text="This is a New Line Text", font= ('Helvetica 14 bold'), foreground= "red3") label.pack() win.wm_attributes('-toolwindow', 'True') win.mainloop()OutputWhen we run the above code, it will display a Tkinter window ... Read More