Thank you for reading this.
I've progressed a little further but I'm now having a problem knowing when to
use the "self" reference. In the following code, the function "ckeck" is called
without the need to press the "check" button. This didn't occur before I
sprinkled "selfs" into the code and added "array" to the "ckeck" function. I
found that I needed "self" to point "array" to my list array "e" and I think
that is where the fault is.
from tkinter import *
class TestGUI:
def __init__(self, master):
self.master = master
master.title("Testing")
num_rows = 6
num_cols = 3
self.e = [[None] * num_cols for _ in range(num_rows)]
for i in range(num_rows):
for j in range(num_cols):
self.e[i][j] = Entry(master, width=4, justify=CENTER,
foreground="gray")
self.e[i][j].grid(row=i, column=j)
self.e[i][j].insert(0,"6")
self.check_button = Button(master, text="Check",
command=self.check(self.e))
self.check_button.grid(row=7, column=7)
def check(self, array):
print("checked")
array[2][2].insert(0, "4")
root = Tk()
my_gui = TestGUI(root)
root.mainloop()
--
Regards,
Phil
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