Hi,
I'm looking at page 548 of Programming Python (3rd Edition) by Mark
Lutz.
The following GUI script works with no problem, i.e., the rows and
columns expand:
=================================================================
# Gridded Widgets Expandable page 548
from Tkinter import *
colors = ["red", "white", "blue"]
def gridbox(root):
Label(root, text = 'Grid').grid(columnspan = 2)
r = 1
for c in colors:
l = Label(root, text=c, relief=RIDGE, width=25)
e = Entry(root, bg=c, relief=SUNKEN, width=50)
l.grid(row=r, column=0, sticky=NSEW)
e.grid(row=r, column=1, sticky=NSEW)
root.rowconfigure(r, weight=1)
r += 1
root.columnconfigure(0, weight=1)
root.columnconfigure(1, weight=1)
root = Tk()
gridbox(Toplevel(root))
Button(root, text="Quit", command=root.quit).grid()
mainloop()
=================================================================
However, the following GUI script using class does not expand rows and
columns:
=================================================================
# Gridded Widgets Expandable 2
from Tkinter import *
colors = ["red", "white", "blue"]
class GUI(Frame):
def __init__(self,master):
Frame.__init__(self,master)
self.grid()
self.gridbox()
def gridbox(self):
Label(self, text = 'Grid').grid(columnspan = 2)
r = 1
for c in colors:
l = Label(self, text=c, relief=RIDGE, width=25)
e = Entry(self, bg=c, relief=SUNKEN, width=50)
l.grid(row=r, column=0, sticky=NSEW)
e.grid(row=r, column=1, sticky=NSEW)
self.rowconfigure(r, weight=1)
r += 1
self.columnconfigure(0, weight=1)
self.columnconfigure(1, weight=1)
root = Tk()
root.title("Gridded Widgets Expandable")
app = GUI(root)
Button(root, text="Quit", command=root.quit).grid()
root.mainloop()
=================================================================
What am I missing?
Thanks,
Jim
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