Newbie problem with Tkinter

[Fredrik Lundh]

Rick Morneau wrote:
> I'm trying to use the <Configure> event in Tkinter, but it always
> returns the exact same width and height regardless of the actual
> size of the frame.

not always -- did you try making the window *smaller*? ;-)

> Here is a simple example:
>
> #! /usr/local/bin/python
>
> from Tkinter import *
>
> root = Tk()
>
> def callback(event):
>     print "New width and height:", event.width, event.height
>
> frame = Frame(root, width=100, height=100)

try this:

    frame = Frame(root, width=100, height=100, bg="blue")

> frame.bind("<Configure>", callback)
> frame.pack()
>
> root.mainloop()

the problem here is that "pack" without options just displays
the widget; it doesn't "attach" it to the parent.  if the parent
is made larger, the widget is just centered along the top edge.

to fix this, change the pack() call to:

    frame.pack(fill=BOTH, expand=1)

which basically means that the widget should expand into
unused space both vertically and horizontally.

</F>

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