Hi All--
I'm having two problems with the scrollbar callback on linux systems
(Fedora 7, Suse 10.1,2 and 3 all exhibit the issues).
Problem one: on Windows, the callback is called with the arguments as
specified in the doc: "scroll", "1" or "-1", "units". When I run the
identical code on linux, the callback is invoked with only one
argument, "1" or "-1". Here's a small program which demos the
problem:
========begin============
#!/usr/bin/env python
from Tkinter import *
import sys
def die(event):
sys.exit(0)
def sDoit(*args):
for i in args:
print "scrollbar:",i, type(i)
root=Tk()
f=Frame(root)
f.pack(expand=1,fill=BOTH)
button=Button(f,width=25)
button["text"]="Quit"
button.bind("<Button>",die)
button.pack()
xb=Scrollbar(f,orient=HORIZONTAL,command=sDoit)
xb.pack()
root.mainloop()
=============end===========
On Windows, it produces the correct output
scrollbar: scroll <type 'str'>
scrollbar: 1 <type 'str'>
scrollbar: units <type 'str'>
but on linux, it produces
scrollbar: 1 <type 'str'>
I can't believe that this is a bug that has not already been fixed, so
I must be doing something wrong. But what? I'm surely overlooking
something dead obvious. ...
Note that I don't want to use this as a scrollbar, all I need is the direction.
The second problem is more pernicious, in that I can work around the
first problem, and I don't really have a clue on the second. On
Windows, clicking one of the arrow buttons produces one callback. On
Linux, in the real application, if I click an arrow button once, the
callback continues to be called until I kill the app. That doesn't
happen in the small program I've provided above, so I'm at a bit of a
loss where to start looking. Any hints?
Metta,
Ivan
--
Ivan Van Laningham
God N Locomotive Works
http://www.pauahtun.org/
http://www.python.org/workshops/1998-11/proceedings/papers/laningham/laningham.html
Army Signal Corps: Cu Chi, Class of '70
Author: Teach Yourself Python in 24 Hours
--
http://mail.python.org/mailman/listinfo/python-list
