Menubutton: Button with Dropdown Options for User Selection

t1=tk.Menubutton(parent_window,options)

import tkinter as tk
my_w = tk.Tk()
my_w.geometry("410x250")  # Size of the window 
l1=tk.Label(my_w,text='Welcome to Menubutton')
l1.grid(row=1,column=1)
l2=tk.Label(my_w,text='Msg here')
l2.grid(row=2,column=2)
str1=tk.StringVar()
font1=('Times',18,'normal')

mb=tk.Menubutton(my_w,text='My Menu',
  activebackground='lightyellow',font=font1,
  underline=4,relief='raised',width=20)
mb.grid(row=2,column=1,padx=10)

mb.menu=tk.Menu(mb)
mb['menu']=mb.menu

int1=tk.IntVar(value=0)
optvar=tk.IntVar(value=1)
def my_fun():
    print("This is inside my_fun")
    l2.config(text='I am from function ')
mb.menu.add_command(label = "Opt 1",command=lambda:print(str1.get() )) 
mb.menu.add_checkbutton(label='Check 1',variable=int1,onvalue=5,offvalue=6,command=lambda:print(int1.get()))
mb.menu.add_radiobutton(label='Radio 1',value=0,variable=optvar,command=lambda:l2.config(text=optvar.get()))
mb.menu.add_radiobutton(label='Radio 2',value=1,variable=optvar,command=lambda:print(optvar.get()))
mb.menu.add_command(label='my_fun',command=lambda:my_fun())
mb.menu.add_command(label='Quit',command=my_w.quit)

my_w.mainloop()  # Keep the window open

Options

mb=tk.Menubutton(my_w,bitmap='question',
	relief='raised')

State Option to disable menubutton

import tkinter as tk
my_w = tk.Tk()
my_w.geometry("410x250")  # Size of the window 
l1=tk.Label(my_w,text='Welcome to Menubutton')
l1.grid(row=1,column=1)
r_v=tk.IntVar()

str1=tk.StringVar()
font1=('Times',18,'normal')
mb=tk.Menubutton(my_w,text='My Menu',
  activebackground='yellow',font=font1,
  underline=4,relief='raised',width=15)
mb.grid(row=2,column=1,padx=3)
mb.menu=tk.Menu(mb)
mb['menu']=mb.menu
mb.menu.add_command(label = "Opt 1") 
mb.menu.add_command(label='Quit',command=my_w.quit)

r1 = tk.Radiobutton(my_w, text='Disable', variable=r_v,
     value='1',command=lambda:mb.config(state='disabled'))
r1.grid(row=2,column=2)
r2 = tk.Radiobutton(my_w, text='Active', variable=r_v, 
    value='2',command=lambda:mb.config(state='active'))
r2.grid(row=2,column=3)
r3 = tk.Radiobutton(my_w, text='Normal', variable=r_v, 
    value='3',command=lambda:mb.config(state='normal'))
r3.grid(row=2,column=4) 

my_w.mainloop()  # Keep the window open

Managing textvariable option of Menubutton

import tkinter as tk
my_w = tk.Tk()
my_w.geometry("410x250")  # Size of the window 
l1=tk.Label(my_w,text='Welcome to Menubutton')
l1.grid(row=1,column=1,pady=20,padx=10)
r_v=tk.IntVar()

str1=tk.StringVar(value='My Menu')
font1=('Times',18,'normal')
mb=tk.Menubutton(my_w,activebackground='yellow',font=font1,
  underline=4,relief='raised',width=15,textvariable=str1)
mb.grid(row=2,column=1,padx=3)
mb.menu=tk.Menu(mb)
mb['menu']=mb.menu
mb.menu.add_command(label = "Opt 1") 
mb.menu.add_command(label='Quit',command=my_w.quit)

e1=tk.Entry(my_w,textvariable=str1)
e1.grid(row=2,column=2)

my_w.mainloop()  # Keep the window open

Example: MenuButton Opening in Different Directions

The direction option allows us to control the opening direction of the dropdown menu in the MenuButton. It can be set to left, right, below, or flush, depending on the interface requirements.

import tkinter as tk

my_w = tk.Tk()
my_w.geometry("400x300")

# MenuButton opening to the right
mb1 = tk.Menubutton(my_w, text='Menu Right', relief='raised', 
    direction='right', bg='#f0e68c', font=("Arial", 12))
mb1.grid(row=0, column=0, padx=50, pady=30)
menu1 = tk.Menu(mb1, tearoff=0)
mb1.config(menu=menu1)
menu1.add_command(label="Option 1")
menu1.add_command(label="Option 2")
menu1.add_command(label="Option 3")

# MenuButton opening to the left
mb2 = tk.Menubutton(my_w, text='Menu Left', relief='raised', 
    direction='left', bg='#add8e6', font=("Arial", 12))
mb2.grid(row=0, column=1, padx=10, pady=10)
menu2 = tk.Menu(mb2, tearoff=0)
mb2.config(menu=menu2)
menu2.add_command(label="Option A")
menu2.add_command(label="Option B")
menu2.add_command(label="Option C")

# MenuButton opening below
mb3 = tk.Menubutton(my_w, text='Menu Below', relief='raised',
     direction='below', bg='#90ee90', font=("Arial", 12))
mb3.grid(row=1, column=0, padx=10, pady=10)
menu3 = tk.Menu(mb3, tearoff=0)
mb3.config(menu=menu3)
menu3.add_command(label="Item 1")
menu3.add_command(label="Item 2")
menu3.add_command(label="Item 3")

# MenuButton with flush direction
mb4 = tk.Menubutton(my_w, text='Menu Flush', relief='raised', 
    direction='flush', bg='#ffcccb', font=("Arial", 12))
mb4.grid(row=1, column=1, padx=10, pady=10)
menu4 = tk.Menu(mb4, tearoff=0)
mb4.config(menu=menu4)
menu4.add_command(label="Choice X")
menu4.add_command(label="Choice Y")
menu4.add_command(label="Choice Z")

my_w.mainloop()

Example: MenuButton with Multiple Cascading Menus

We can expand the basic MenuButton by adding cascading submenus, allowing for a more complex menu structure within the button itself.

import tkinter as tk

my_w = tk.Tk()
my_w.geometry("300x200") # width and height of the window
font1=['Arial',18,'normal'] # font style

# Create a MenuButton
mb = tk.Menubutton(my_w, text='Options', 
    relief='raised',bg='lightgreen',font=font1)
mb.grid(row=0, column=0, padx=50, pady=30)

# Add a main menu to the MenuButton
main_menu = tk.Menu(mb, tearoff=0,font=font1,bg='greenyellow')
mb.config(menu=main_menu)

# Add submenus
file_menu = tk.Menu(main_menu, tearoff=0,bg='yellow',font=font1)
edit_menu = tk.Menu(main_menu, tearoff=0,bg='khaki',font=font1)

# Add commands to submenus
file_menu.add_command(label="New", command=lambda: print("New File"))
file_menu.add_command(label="Open", command=lambda: print("Open File"))
file_menu.add_command(label="Save", command=lambda: print("Save File"))

edit_menu.add_command(label="Cut", command=lambda: print("Cut"))
edit_menu.add_command(label="Copy", command=lambda: print("Copy"))
edit_menu.add_command(label="Paste", command=lambda: print("Paste"))

# Add the submenus to the main menu
main_menu.add_cascade(label="File", menu=file_menu)
main_menu.add_cascade(label="Edit", menu=edit_menu)

my_w.mainloop() # Keep the window open 

Difference between Menu and MenuButton in Tkinter

Menu: A Menu widget is used to create a traditional menu bar or pop-up menus. It provides a list of commands, and can be nested for hierarchical menus (e.g., File, Edit, View). It is generally used in creating the full menu structure of a GUI.

MenuButton: A MenuButton is a button that, when clicked, opens a dropdown menu. It is used for creating context menus or dropdown lists where users can select an option from a group.