On Jul 30, 8:24 am, "Hamilton, William " <[EMAIL PROTECTED]> wrote:
> > From: Jim
> > 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?
>
> In the first, your gridbox has Toplevel(root) as its master, causing it
> to be created in a new window. In the second, it has Frame(root) as its
> master, which does not create a new window. Changing Frame to Toplevel
> in the class statement and the call to __init__ causes them to act
> identically.
>
> --
> -Bill Hamilton- Hide quoted text -
>
> - Show quoted text -
Thank you Bill Hamilton.
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