Python Menubutton

The Menubutton widget provides a dropdown menu with an arrow pointing down; this can be a useful way of grouping commands that share a common purpose in your user interface. In this page, you will learn about the syntax, example, output, explanation, uses, important points and summary of Menubutton widget.

Syntax

The syntax to create a Menubutton widget is given below:

w = Menubutton ( master, option, ... )

Example

The following example demonstrates the creation of a Menubutton widget:

from tkinter import *

root = Tk()
root.geometry("300x200")

menu = Menu(root)
root.config(menu=menu)

greet_menu = Menu(menu)
menu.add_cascade(label='Greet', menu=greet_menu)

greet_menu.add_command(label='Hello', command=lambda: print('Hello!'))
greet_menu.add_command(label='Goodbye', command=lambda: print('Goodbye!'))

root.mainloop()

Output

The above code will create a window with a Menubutton labeled "Greet". When the user clicks on this button, a dropdown menu will appear with two options - "Hello" and "Goodbye". If the user clicks on the "Hello" option, it will print "Hello!" to the console. If they click on "Goodbye", it will print "Goodbye!".

Explanation

In the example code, we first import the required tkinter module and create a root window with a size of 300x200. We then create a Menu widget and set it as the root window's menu using the config() method.

Next, we create a submenu using the Menu() constructor and add it to the Menu widget using add_cascade(). This creates a dropdown menu associated with the "Greet" Menubutton.

Finally, we add two options to the submenu using the add_command() method. Each option has a label (the text that appears in the dropdown menu) and a command (the function that is called when the user clicks on the option).

Use

The Menubutton widget is useful in creating a dropdown menu with different options. It is widely used in GUI applications for grouping commands that share a common purpose.

Important Points

• The Menubutton widget displays a dropdown menu when clicked.
• The Menu() constructor is used to create submenus which are added to the Menubutton.
• The add_cascade() method is used to add the submenu to the main menu.
• The add_command() method is used to add options to the submenu.

Summary

In this page, we learned about the Menubutton widget in tkinter, its syntax and example, and how it can be used to create a dropdown menu with different options. We also covered some important points related to the Menubutton and its usage.