On Sat, 13 Oct 2007 03:52:43 -0500
Nicholas <[EMAIL PROTECTED]> wrote:
> I'm having difficulty switching focus between widgets in my program. This
> is a mostly non-functioning GUI to be used for database creation, saving
> and retreival. The code currently looks horrifyingly unPythonic since I'm
> very new to this and I'm just kind of hacking my way through it. It's also
> several hundred more lines than I should put in here. My major question is
> if there is a Python or Tkinter piece of code that will excecute itself as
> though I had pressed the tab button? In other words, I'd like to bind the
> return key, when pressed in my Entry box, to switch focus (or Tab) to the
> next item in the focus loop. I have the focus turned off for all other
> widgets aside from the ones created by the function below and one button
> (the one that will save the entries to the db). Sorry if this is
> long-winded, but I'm not sure what I'm talking about enough to be concise.
> Anyway, here's the code so far and what I think it does:
>
> ##########################
>
> variables = [] # clears previously
> collected values
> for field in SHORTKEYS: # iterates over a list
> of 40 items
> ent = Entry(rite) # creates the entry box
> ent.pack(side = TOP, fill = X) # packs the entry box
> if field == 'name': # 'name' is the first
> entry box,
> ent.focus_set() # so it gets focus on
> startup
> ent.bind('<Return>', return_pressed) # binds <Return> on all entry
> boxes
> var = StringVar() #
> ent.config(textvariable=var) # all the other lines convert
> the entries
> variables.append(var) # to a list I can use later.
> return variables #
>
Hi Nick,
you will want to use the widget's event_generate() method to emulate the
Tab-keystroke,
so your callback might look like:
def return_pressed(event):
event.widget.event_generate('<Tab>')
return 'break'
The "return 'break'" statement stops the <Return> event from triggering its
default callback (if any).
I hope this helps.
Michael
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