On 12/27/2012 8:20 PM, Verde Denim wrote:
Just getting into Py coding and not understanding why this code doesn't
seem to do anything -
Part of your 'learning curve' should be learning to write informative
subjects lines. The above says almost nothing. For this I suggest
"Problem with classes and tkinter". In this case, you specifically need
to add the tkinter startup code; check the example in the manual. If you
do add that, you code may run, but it may required advice with someone
with tkinter expertise (and interest) beyond mind.
Also, if you are just starting, I recommend you start with 3.3 unless
you have a good reason to start with an older version. (IE, you need to
use a third party library that only runs with 2.x.)
# File: dialog2.py
import dialog_handler
class MyDialog(dialog_handler.Dialog):
def body(self, master):
Label(master, text="First:").grid(row=0)
Label(master, text="Second:").grid(row=1)
self.e1 = Entry(master)
self.e2 = Entry(master)
self.e1.grid(row=0, column=1)
self.e2.grid(row=1, column=1)
return self.e1 # initial focus
def apply(self):
first = string.atoi(self.e1.get())
second = string.atoi(self.e2.get())
print first, second # or something
# File: dialog_handler.py
from Tkinter import *
import os
class Dialog(Toplevel):
def __init__(self, parent, title = None):
Toplevel.__init__(self, parent)
self.transient(parent)
if title:
self.title(title)
self.parent = parent
self.result = None
body = Frame(self)
self.initial_focus = self.body(body)
body.pack(padx=5, pady=5)
self.buttonbox()
self.grab_set()
if not self.initial_focus:
self.initial_focus = self
self.protocol("WM_DELETE_WINDOW", self.cancel)
self.geometry("+%d+%d" % (parent.winfo_rootx()+50,
parent.winfo_rooty()+50))
self.initial_focus.focus_set()
self.wait_window(self)
#
# construction hooks
def body(self, master):
# create dialog body. return widget that should have
# initial focus. this method should be overridden
pass
def buttonbox(self):
# add standard button box. override if you don't want the
# standard buttons
box = Frame(self)
w = Button(box, text="OK", width=10, command=self.ok,
default=ACTIVE)
w.pack(side=LEFT, padx=5, pady=5)
w = Button(box, text="Cancel", width=10,
command=self.cancel)
w.pack(side=LEFT, padx=5, pady=5)
self.bind("<Return>", self.ok)
self.bind("<Escape>", self.cancel)
box.pack()
#
# standard button semantics
def ok(self, event=None):
if not self.validate():
self.initial_focus.focus_set() # put focus back
return
self.withdraw()
self.update_idletasks()
self.apply()
self.cancel()
def cancel(self, event=None):
# put focus back to the parent window
self.parent.focus_set()
self.destroy()
#
# command hooks
def validate(self):
return 1 # override
def apply(self):
pass # override
--
Terry Jan Reedy
--
http://mail.python.org/mailman/listinfo/python-list
