I'm learning to use TkInter in Python and came across this example program from
'Thinking in TkInter' (http://thinkingtkinter.sourceforge.net) - see below.
Two buttons 'button1' and 'button2' are defined. The bug is that event.widget
returns '.!frame.!button' from a button1 event. i.e. it somehow drops the '1'
from the widget name. Events on button2 are correctly reported.
Is this a bug or a feature?
<code>
from tkinter import *
class MyApp:
def __init__(self, parent):
self.myParent = parent
self.myContainer1 = Frame(parent)
self.myContainer1.pack()
button_name = "OK"
self.button1 = Button(self.myContainer1,
command=self.buttonHandler(button_name, 1, "Good
stuff!"))
# self.button1.bind("<Return>", self.buttonHandler_a(event,
button_name, 1, "Good stuff!"))
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=self.buttonHandler(button_name, 2, "Bad
stuff!"))
# self.button2.bind("<Return>", self.buttonHandler_a(event,
button_name, 2, "Bad stuff!"))
self.button2.configure(text=button_name, background="red")
self.button2.pack(side=LEFT)
def buttonHandler(self, arg1, arg2, arg3):
print(" buttonHandler routine received arguments:",
arg1.ljust(8), arg2, arg3)
def buttonHandler_a(self, event, arg1, arg2, arg3):
print("buttonHandler_a received event", event)
self.buttonHandler(arg1, arg2, arg3)
print("\n"*100) # clear the screen
print("Starting program tt077.")
root = Tk()
myapp = MyApp(root)
print("Ready to start executing the event loop.")
root.mainloop()
print("Finished executing the event loop.")
</code>
--
https://mail.python.org/mailman/listinfo/python-list
