[EMAIL PROTECTED] wrote:
> I'm playing with a sudoku GUI...just to learn more about python.
>
> I've made 81 'cells'...actually small canvases
>
> Part of my scheme to write the cells (all 81 of them in the gui) to a file
> (using the the SAVE callback/button), then
> restore the gui cells from the contents of the saved file, which depends on
> knowing the "name" of the cell with the
> focus, or one (or more) which have a number.
>
> The print shows .9919624.9990312, but this nunber (name?) does not work in:
>
> cell-name of cell-.create_text(18,18, text = somevar, fill = 'blue' , font =
> ('arial', 18, 'bold'))
>
> Also, how can I declare a variable outside of the mainloop/callback scheme
> which would be 'known' to the callbacks?
>
> Thanks,
> Norm
>
I guess you are using tkinter.
".9919624.9990312" in tkinter is just a string representation of the
underlying object, in this case a Canvas(). It is not up to a python
programmer to understand exactly what these numbers are. They are used
by Tcl/Tk internally.
Tk objects are not pickleable. Better is to create a datastructure that
can be pickled from info gleaned specifically with the itemcget()
method. Example code is below. See the Pickle/cPickle documentation.
They are very easy to use.
Since you haven't posted any code, I can only guess what you are doing.
But you may want to try variations on the following (read the comments):
from Tkinter import *
# This is how you may want to make a bunch of canvases in a grid.
def make_canvases(parent, rows=9, cols=9, **options):
"""
Pass in rows, cols, and any options the canvases should
require.
"""
cells = []
for i in xrange(rows):
arow = []
for j in xrange(cols):
c = Canvas(parent, **options)
c.grid(row=i, column=j)
arow.append(c)
cells.append(arow)
return cells
def demo():
"""
Tests out our make_canvases() function.
"""
# tkinter stuff--setting up
tk = Tk()
f = Frame(tk)
f.pack(expand=YES, fill=BOTH)
# make the canvases the gui-programmer way
canvases = make_canvases(f, height=25, width=25)
# individual access to canvases (remember that indices start at 0)
canvases[0][0].configure(background='orange')
canvases[7][8].create_text(14, 8, text='Bob',
fill='blue',
font=('arial', 14, 'bold'))
canvases[8][8].create_text(14, 8, text='9,9',
fill='blue',
font=('arial', 14, 'bold'))
# accessing inside loops
for i in xrange(9):
canvases[i][8-i].configure(background='red')
# fun with bindings (see your last question)
# you should study this one!
for i in xrange(9):
for j in xrange(9):
c = canvases[i][j]
c.bind("<Button-1>",
lambda e=None, c=c: c.configure(background='green'))
# getting out info
texts = []
for i in xrange(9):
for j in xrange(9):
c = canvases[i][j]
for t in c.find_all():
try:
text = c.itemcget(t, 'text')
texts.append((i,j,text))
except:
pass
# reporting the got-out info
Label(tk, text="Texts are: %s" % texts).pack(expand=YES, fill=X)
tk.mainloop()
demo()
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