How to bind multiple commands to Tkinter button
In this tutorial, we will demonstrate how to bind multiple commands to a Tkinter button. Multiple commands will be executed after the button is clicked.
Bind Multiple commands to Tkinter Button
The Tkinter button has only one command property so that multiple commands or functions should be wrapped to one function that is bound to this command.
We could use lambda to combine multiple commands as,
command=lambda:[funcA(), funcB(), funcC()]
This lambda function will execute funcA, funcB, and funcC one by one.
labmda bind multiple commands example
try:
import Tkinter as tk
except:
import tkinter as tk
class Test():
def __init__(self):
self.root = tk.Tk()
self.root.geometry('200x100')
self.button = tk.Button(self.root,
text = 'Click Me',
command=lambda:[self.funcA(), self.funcB(), self.funcC()])
self.button.pack()
self.labelA = tk.Label(self.root, text="A")
self.labelB = tk.Label(self.root, text="B")
self.labelC = tk.Label(self.root, text="C")
self.labelA.pack()
self.labelB.pack()
self.labelC.pack()
self.root.mainloop()
def funcA(self):
self.labelA["text"] = "A responds"
def funcB(self):
self.labelB["text"] = "B responds"
def funcC(self):
self.labelC["text"] = "C responds"
app = Test()
Combine Functions to One Single Function
def combineFunc(self, *funcs):
def combinedFunc(*args, **kwargs):
for f in funcs:
f(*args, **kwargs)
return combinedFunc
Above function defines a function inside a function and then returns the function object.
for f in funcs:
f(*args, **kwargs)
It executes all the functions given in the parenthesis of combineFunc.
try:
import Tkinter as tk
except:
import tkinter as tk
class Test():
def __init__(self):
self.root = tk.Tk()
self.root.geometry('200x100')
self.button = tk.Button(self.root,
text = 'Click Me',
command = self.combineFunc(self.funcA, self.funcB, self.funcC))
self.button.pack()
self.labelA = tk.Label(self.root, text="A")
self.labelB = tk.Label(self.root, text="B")
self.labelC = tk.Label(self.root, text="C")
self.labelA.pack()
self.labelB.pack()
self.labelC.pack()
self.root.mainloop()
def combineFunc(self, *funcs):
def combinedFunc(*args, **kwargs):
for f in funcs:
f(*args, **kwargs)
return combinedFunc
def funcA(self):
self.labelA["text"] = "A responds"
def funcB(self):
self.labelB["text"] = "B responds"
def funcC(self):
self.labelC["text"] = "C responds"
app = Test()
