[Tkinter-discuss] problem of understanding objects

[Cameron Laird]

On Sat, Jun 26, 2010 at 08:26:12AM +0200, zizou afix wrote:
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> i try to organize my code. but i ' ve some problem with basic objet oriented
> programing use.
> if some one can show me the way to destroy my canvas with this structure.
> thanks
> 
> laurent
> 
> ##########################################################################
> from Tkinter import *
> 
> class Root:
> 
>     def __init__(self, master):
>         myMenu = MyMenu(master)
>         myAccueil = MyAccueil(master)
> 
> class MyAccueil(object):
>     def __init__(self, master):
> 
>         canvas = Canvas(master, width = 500, height = 500, bg='yellow' )
>         canvas.pack(expand = YES, fill = BOTH)
> 
>     def delete(self):       #   my object problem
>         canvas.destroy() #   is here
> 
> 
> class MyMenu(object):
> 
>     def __init__(self, master):
>         self.menubar = Menu(master)
>         master.config(menu=self.menubar)
>         self.createmenubar(master)
> 
>     def createmenubar(self, master):
>         self.Fmenu = Menu(self.menubar, tearoff=0)
>         self.menubar.add_cascade(label="exec",menu=self.Fmenu)
>             # exec Content
>         self.Fmenu.add_command(label="bang", command=self.bang)
>              # Displays menubar
>         master.config(menu=self.menubar)
> 
>     def bang(self):            #  and
>         myAccueil.delete() #  here
> 
> root = Tk()
> app = Root(root)
> 
> root.mainloop()
> ##########################################################################
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I'm uncertain what you're trying to achieve; does the following
help you approach your goal?
###############################################################
from Tkinter import *

class Root:
    def __init__(self, master):
        myMenu = MyMenu(master)
        self.myAccueil = MyAccueil(master)

class MyAccueil(object):
    def __init__(self, master):
        self.canvas = Canvas(master, width = 500, height = 500, bg='yellow' )
        self.canvas.pack(expand = YES, fill = BOTH)

    def delete(self):       #   my object problem
        self.canvas.destroy() #   is here


class MyMenu(object):
    def __init__(self, master):
        self.menubar = Menu(master)
        master.config(menu=self.menubar)
        self.createmenubar(master)

    def createmenubar(self, master):
        self.Fmenu = Menu(self.menubar, tearoff=0)
        self.menubar.add_cascade(label="exec",menu=self.Fmenu)
            # exec Content
        self.Fmenu.add_command(label="bang", command=self.bang)
             # Displays menubar
        master.config(menu=self.menubar)

    def bang(self):            #  and
        app.myAccueil.delete() #  here

root = Tk()
app = Root(root)
root.mainloop()