Problems programming with Tkinter

Sat, 01 Jan 2005 19:01:26 -0700

Hi !

I'm trying to create a graphical program using Tkinter.
The program is supposed to save a string the user defines
as a filename. I've made it work with the the first button
in the program that's named "Spara ett vrde i en strng till ett filnamn", that's swedish for "Save a value in a string as a file name".
The button "Skriv ett vrde till filen" (swedish for "Write a value to the file")

But, i want the program to open a new dialogue when i press the button "Visa ruta" and in that dialogue will be a field where you can enter a value directly in the program, but a can't get it to work because is don't know how i shall do to open a new dialogue window in the program?
Is there someone who can help me with my problem?

Here's the sourcecode for my program:

from Tkinter import *
class App:

def __init__(self, master):

frame = Frame(master)
frame.pack()

self.hi_there = Button(frame, text="Spara ett vrde i en strng till ett filnamn", command=self.say_hi)
self.hi_there.pack(side=LEFT)

self.skriv_varde = Button(frame, text="Skriv ett vrde till filen", command=self.skriv_varde)
self.skriv_varde.pack(side=LEFT)

self.visa_ruta = Button(frame, text="Visa ruta", command=self.visa_ruta)
self.visa_ruta.pack(side=LEFT)

def say_hi(self):
print "Sparar fil"
S = "filen.fil"
output = open(S, 'w')
print "Filen sparad"

def skriv_varde(self):
print "Skriver vrde till filen"
myfile = open('filen.fil', 'w')

myfile.write('Ny mening')
myfile.close()
print "Vrdet till filen skrivet"

def visa_ruta(self, parent):

top = self.top = Toplevel(parent)

Label(top, text="Value").pack()

self.e = Entry(top)
self.e.pack(padx=5)

b = Button(top, text="OK", command=self.ok)
b.pack(pady=5)

def ok(self):

print "value is", self.e.get()

self.top.destroy()

root = Tk()

app = App(root)
root.mainloop()

Re: Problems programming with Tkinter

Mon, 03 Jan 2005 00:18:51 -0700

This message was edited by Drost at 2005-1-3 0:23:4

: Hi !
:

--- Deliberatelly cut for shortening the message ---

: But, i want the program to open a new dialogue when i press the button "Visa ruta" and in that dialogue will be a field where you can enter a value directly in the program, but a can't get it to work because is don't know how i shall do to open a new dialogue window in the program?
: Is there someone who can help me with my problem?
:
: Here's the sourcecode for my program:
:
: from Tkinter import *
: class App:
: def __init__(self, master):
: frame = Frame(master)
: frame.pack()
: self.hi_there = Button(frame, text="Spara ett vrde i en strng till ett filnamn", command=self.say_hi)
: self.hi_there.pack(side=LEFT)
: self.skriv_varde = Button(frame, text="Skriv ett vrde till filen", command=self.skriv_varde)
: self.skriv_varde.pack(side=LEFT)
: self.visa_ruta = Button(frame, text="Visa ruta", command=self.visa_ruta)
: self.visa_ruta.pack(side=LEFT)
:
: def say_hi(self):
: print "Sparar fil"
: S = "filen.fil"
: output = open(S, 'w')
: print "Filen sparad"
:
: def skriv_varde(self):
: print "Skriver vrde till filen"
: myfile = open('filen.fil', 'w')
:
: myfile.write('Ny mening')
: myfile.close()
: print "Vrdet till filen skrivet"
:
:
: def visa_ruta(self, parent):
: top = self.top = Toplevel(parent)
: Label(top, text="Value").pack()
: self.e = Entry(top)
: self.e.pack(padx=5)
: b = Button(top, text="OK", command=self.ok)
: b.pack(pady=5)
:
: def ok(self):
: print "value is", self.e.get()
: self.top.destroy()
:
: root = Tk()
: app = App(root)
: root.mainloop()

Maybe a simpler solution is to use the tkSimpleDialog module's askstring function to get the user enter a value (hint: http://www.pythonware.com/library/tkinter/introduction/x1164-data-entry.htm)

The main problem seems to be a naming error where you assign to self.visa_ruta an instance of a Button widget and also there is a function with the same identifier later (the one which you've told to be the callback function of the button).

Hope these'll help.

Drost

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