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I’ve been trying to make a class named vwin which makes either a Tk or Toplevel window. Unfortunately it returns an error:
Traceback (most recent call last):
File "C:UsersRELICDesktoptextpad.py", line 17, in <module>
sub = vwin(['Sub Window','640x480-25-25','normal','window'],root)
File "C:UsersRELICDesktoptextpad.py", line 9, in __init__
window = Toplevel(master)
File "C:Python33libtkinter__init__.py", line 2136, in __init__
BaseWidget.__init__(self, master, 'toplevel', cnf, {}, extra)
File "C:Python33libtkinter__init__.py", line 2086, in __init__
BaseWidget._setup(self, master, cnf)
File "C:Python33libtkinter__init__.py", line 2064, in _setup
self.tk = master.tk
AttributeError: 'vwin' object has no attribute 'tk'
Here is my code:
###############################################################################
from tkinter import *
class vwin():
def __init__(self,args,master=None):
if args[3].lower() == 'tk':
window = Tk()
else:
window = Toplevel(master)
window.title(args[0])
window.geometry(args[1])
window.state(args[2])
root = vwin(['Main Window','640x480+25+25','normal','Tk'])
sub = vwin(['Sub Window','640x480-25-25','normal','window'],root)
Answer
I see lots of issues.
In your custom class, you are just creating the
Tk()object and assigning it to local variablewindowwhose scope ends once the the__init__()function ends , and is most probably garbage collected. You should save theTk()object as an instance variable.You are sending in object of type
vwinas master toSub windowvwin constructor. And then you are trying to callToplevel()on thevwinobject , which would not work. You need to use the previously savedTk()object there.You are never starting the mainloop() for
Tk()so when you run the program as a script, it would end before it starts.
I think there may be tons of better way to do this , but one way to get it working for you is –
from tkinter import *
class vwin():
def __init__(self,args,master=None):
if args[3].lower() == 'tk':
self.window = Tk()
else:
self.window = Toplevel(master.window)
self.window.title(args[0])
self.window.geometry(args[1])
self.window.state(args[2])
def mainloop(self):
self.window.mainloop()
root = vwin(['Main Window','640x480+25+25','normal','Tk'])
sub = vwin(['Sub Window','640x480-25-25','normal','window'],root)
root.mainloop()