[Tutor] help with Tkinter, please

[Dick Moores]

At 06:54 PM 11/26/2006, John Fouhy wrote:
>On 27/11/06, Dick Moores <rdm at rcblue.com> wrote:
> > Well, I'm having a terrible time with grid(). I do have the 6 buttons
> > in the same row, but they're a real mess. Someone please run this and
> > tell me how to get them looking better.
>
>I'm not certain exactly what layout you want, but have a look at this
>to see if it looks any better:

A lot better! And now that I understand columnspan, I was able to 
move the buttons around and configure them a bit more. I'm quite 
satisfied now. For this program it seems I won't be needing to employ 
the nested frames suggested by Alan and Kent. But of course I'll try 
those anyway, just to learn about them.

I have a question about the "EXIT" button's command, 
command=sys.exit. It fails to quit the program when I've entered too 
large an integer for factoring, or for prime testing, and I don't 
want to wait any more for the result. When I'm running the program 
from my Win XP console, I can quit with a simple Ctrl+C, but this 
won't be available to the friend I may send the executable to. Is it 
possible to build in a way to smoothly interrupt, say, a factoring 
process that's taking too long?

Thanks very much, John.

Dick


>I think you were a bit confused about the role of columnspan.  If you
>say .grid(row=R, column=C, columnspan=2) then the widget you are
>gridding will occupy (row R, column C) _and_ (row R, column C+1) (ie:
>it spans two columns).
>
>from Tkinter import *
>
>root = Tk()
>root.option_add('*font', ('verdana', 11))
>root.title("Fun with integers")
>fram = Frame(root).grid()
>
>Label(fram, text="Enter a positive integer, n",
>                  fg="#996666").grid(row=0,column=1,sticky=W)
>
>entry = Entry(fram, fg="red", bg="#DCDCDC", width = 30)
>entry.focus_set()
>entry.grid(row=1,column=1, padx=5, pady=5,sticky=E+W)
>
>
>b1=Button(fram, text="Compute n!", bg="black", fg="white", width = 19)
>b1.grid(row=2,column=0,sticky=W)
>
>b2=Button(fram, text="Partially spell n", fg="black", bg="white",
>                  width = 19)
>b2.grid(row=2,column=1,sticky=W)
>
>b3=Button(fram, text="Compute factors of n", bg="#D3D3D3",
>                  fg="yellow", width = 19)
>b3.grid(row=2,column=2,sticky=W)
>
>b4=Button(fram, text="Find primes in [n, n+99]", bg="yellow",
>fg="red", width = 19)
>b4.grid(row=2,column=3,sticky=W)
>
>long_text = "See the largest number that can be spelled"
>b5=Button(fram, text=long_text, fg="green", bg="#BF6AF5", width = 19)
>b5.grid(row=3,column=0,columnspan=3,sticky=E+W)
>
>b6=Button(fram, text="EXIT", fg="white", bg="red", width = 
>19,command=sys.exit)
>b6.grid(row=3,column=3,sticky=W)
>
>#text = ScrolledText(fram, bg = "cyan", fg = "#330000", height=18)
>text = Text(fram)
>text.insert(END, "n-factorial or n-cubed will appear here.\n\n")
>text.insert(END, 'And again, with commas inserted.\n\n')
>text.insert(END, "And yet again, in scientific notation.")
>text.grid(row=4,column=0,columnspan=4,sticky=N+S+E+W)
>
>mainloop()
>_______________________________________________
>Tutor maillist  -  Tutor at python.org
>http://mail.python.org/mailman/listinfo/tutor