Button event binding: without passing the event as an argument
from Tkinter import *
class MyApp:
def __init__(self, parent):
self.myParent = parent
self.myContainer1 = Frame(parent)
self.myContainer1.pack()
button_name = "OK"
# command binding
self.button1 = Button(self.myContainer1,
command = lambda
arg1=button_name, arg2=1, arg3="Good stuff!" :
self.buttonHandler(arg1, arg2, arg3)
)
# event binding -- passing the event as an argument
self.button1.bind("<Return>",
lambda
event, arg1=button_name, arg2=1, arg3="Good stuff!" :
self.buttonHandler_a(event, arg1, arg2, arg3)
)
self.button1.configure(text=button_name, background="green")
self.button1.pack(side=LEFT)
self.button1.focus_force() # Put keyboard focus on button1
button_name = "Cancel"
self.button2 = Button(self.myContainer1,
command = lambda
arg1=button_name, arg2=2, arg3="Bad stuff!":
self.buttonHandler(arg1, arg2, arg3)
)
self.button2.bind("<Return>",
lambda
event, arg1=button_name, arg2=2, arg3="Bad stuff!" :
self.buttonHandler(arg1, arg2, arg3)
)
self.button2.configure(text=button_name, background="red")
self.button2.pack(side=LEFT)
def buttonHandler_a(self, event, argument1, argument2, argument3):
print "buttonHandler_a received event", event
self.buttonHandler(argument1, argument2, argument3)
root = Tk()
myapp = MyApp(root)
root.mainloop()
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