On 10/03/2011 20:28, Richard Holmes wrote:
I am trying to use the mouse wheel to scroll a list box, but I'm not
getting the event. When I bind "<Button-1>" to the listbox I get the
event and I'm able to scroll using yview_scroll. I've tried binding
"MouseWheel" and"<MouseWheel>", and I've also tried"<Button-4>" and
"<Button-5>" even though I'm using Windows (XP, if that makes a
difference). None of these works (I'm using print to see if I got to
an event handler, and there's no printout).
TIA for any help!
Dick
Google found this:
Using the Mouse Wheel with Tkinter (Python)
http://www.daniweb.com/software-development/python/code/217059
which I adapted to get this (tested on XP with Python 2.7):
import Tkinter as tk
def mouse_wheel(event):
dir = 0
# respond to Linux or Windows wheel event
if event.num == 5 or event.delta == -120:
dir = 1
if event.num == 4 or event.delta == 120:
dir = -1
listbox.yview_scroll(dir, "units")
root = tk.Tk()
root.title('turn mouse wheel')
root['bg'] = 'darkgreen'
# with Windows OS
root.bind("<MouseWheel>", mouse_wheel)
# with Linux OS
root.bind("<Button-4>", mouse_wheel)
root.bind("<Button-5>", mouse_wheel)
listbox = tk.Listbox(root)
listbox.pack()
for i in range(100):
listbox.insert(tk.END, str(i))
root.mainloop()
--
http://mail.python.org/mailman/listinfo/python-list
