Help needed with the Tkinter Entry widget

[Elias Alhanatis]

Hello to everybody!!
I am running Python 2.5.1 on Windows Vista and i have a problem with the
"Entry" widget of Tkinter. Take a look at this code:

from Tkinter import *

def fetch():
    q=(e.get())
    print q
    
root=Tk()
f=Frame(root)
f.pack()
e=Entry(f,width=26)
e.pack()
e.focus()

e.bind("<Any-KeyPress>",(lambda event: fetch()))

root.mainloop()

The problem i have ( as you can verify if you run the script) , is that
although the first Key-Press is shown in the Entry field , the computer
doesn't assign it to the variable which it is assigned , until a SECOND
Key-Press occurs. The same goes for the second one ( although it appears on the
widget , its not assigned until the THIRD Key-Press occurs ) and so on...

Could anyone tell me if this is normal behaviour (and if so how can i "correct" it,
or my code has some kind of flaw?

Many thanks in advance!!!!

[ilikepython]

Hello to everybody!!
I am running Python 2.5.1 on Windows Vista and i have a problem with the
"Entry" widget of Tkinter. Take a look at this code:

from Tkinter import *

def fetch():
    q=(e.get())
    print q
    
root=Tk()
f=Frame(root)
f.pack()
e=Entry(f,width=26)
e.pack()
e.focus()

e.bind("<Any-KeyPress>",(lambda event: fetch()))

root.mainloop()

The problem i have ( as you can verify if you run the script) , is that
although the first Key-Press is shown in the Entry field , the computer
doesn't assign it to the variable which it is assigned , until a SECOND
Key-Press occurs. The same goes for the second one ( although it appears on the
widget , its not assigned until the THIRD Key-Press occurs ) and so on...

Could anyone tell me if this is normal behaviour (and if so how can i "correct" it,
or my code has some kind of flaw?

Many thanks in advance!!!!

The problem is that you are calling e.get() before the entry widget gets the key press. I think you can fix it with this:
[code=python]
def fetch(event):
print event.char + e.get()


e.bind("<Any-KeyPress>", fetch)
[/code]
If that doesn't work, try printing another member of the event object.

[bartonc]

The problem is that you are calling e.get() before the entry widget gets the key press. I think you can fix it with this:
[code=python]
def fetch(event):
print event.char + e.get()


e.bind("<Any-KeyPress>", fetch)
[/code]
If that doesn't work, try printing another member of the event object.

I like it!
It may be the other way 'round, though:
[code=python]
def fetch(event):
print e.get() + event.char
# and maybe like this is more general
# print event.widget.ge t() + event.char

e.bind("<Any-KeyPress>", fetch)
[/code]

[Elias Alhanatis]

Dear friends ,

I am realy GRATEFULL for your quick and helpfull reply!!!!
I was trying to do solve this problem for 3 days (..and nights...) and realy got
frustrated..... ..

Thanks again!!!!