Greetings pythonistas,
I have been exploring the use of Tkinter trying to write a fairly simple
program which will accept data from a GUI with 3 Entry fields that is commanded
by a Button. Once the button is pressed the values in the fields should result
in a calculation - the values should all be numeric (I'll work on catching
errors later) but I can not figure out how to pass those values to the callback
function for the button. Here is my code so far:
from Tkinter import *
class App:
def __init__( self, master ):
frame = Frame( master )
frame.grid()
entry1 = Entry( frame, bg = "white", width = 3 ).grid(row = 0, column =
0 )
Label( frame, text = "X^2 +" ).grid( row = 0, column = 1 )
entry2 = Entry( frame, bg = "white", width = 3 ).grid(row = 0, column =
2 )
Label( frame, text = "X +" ).grid( row = 0, column = 3 )
entry3 = Entry( frame, bg = "white", width = 3 ).grid(row = 0, column =
4 )
Label( frame, text = "= 0" ).grid( row = 0, column = 5 )
calcbutton = Button( text = "How many Real roots?", command =
self.calculate )
calcbutton.grid( row = 1, column = 0 )
def calculate( self ):
print 1
root = Tk()
root.geometry( '250x100+450+70' )
app = App(root)
root.mainloop()
Now the above code runs, but I need to figure out how to get the contents of
the fields entry1, entry2 and entry3 to the calculate method. Or maybe I am
going about this all wrong and there is a better way to do it. Any help would
be appreciated.
Brett_______________________________________________
Tutor maillist - [email protected]
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