newbie needs help with tkinter

[Joonas Paalasmaa]

Sacchi wrote:
> 
> I've just learned the main rules of python(I already knew both java and
> C). Now I'm trying to get something out of Tkinter, but while running
> this sample program (made by myself) I encountered a problem. I wanted
> that by clicking on the "configura" command under the "File" menu the
> frame would get yellow and that a label would appear on it. The
> function works(the line "print "hello!"" gets executed) but the gui
> window doesn't change. I even tried to use the widget redraw methods
> but with no success... anyone can help me please?
> 
> Thanks in advance
> Marco
> 
> --------- Program Code ----------------------
> 
> from Tkinter import *
> 
> class Application(Frame):
> 
>         def __init__(self,master=None):
>                 Frame.__init__(self,master)
>                 menubar=self.addmenubar()
>                 master.config(menu=menubar)
>                 menubar.mainloop()
> 
>         def addmenubar(self):
>                 menubar=Menu()
>                 filemenu=Menu(menubar)
>                 menubar.add_cascade(menu=filemenu,label="File")
> #these lines got shifted by the newsreader program, but all belong to
> #the addmenubar function
> filemenu.add_command(label="Configura"command=self.configframe)
Isn't a comma required here? ---------> ^

>         filemenu.add_command(label="Lavora")
>                 return menubar
> 
>         def configframe(self):
>                 self.set(bg="yellow")
>                 w=Label(self,fg="blue",text="prova")
>                 w.grid()
>                 self.update_idletasks()
>                 print "hello!"
> 
> #main
> 
> root=Tk()
> applicazione=Application(root)
> root.mainloop()
> --
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