I saw that earlier in the day (and a couple of weeks ago too). I understand it just about as well as lambdas. :) Do all of those values get passed each time a key is pressed? Also, each Entry() field has a different max length. Where do I pass that in all of this? It would need to be an arg to vcmd in the Entry(). I couldn't see how to do that. I have an old chunk of code that allows you to pass parameters to things like the functions associated with a Button widget's 'command=' callback, but I didn't see how that would fit in here. I don't want to create a different vcmd for every possible allowed length. (there's dozens in the whole program).
On 2013-03-06, at 18:18, Bryan Oakley <bryan.oak...@gmail.com> wrote: > If you're doing this for input validation you should consider using > the built-in validation features of the entry widget instead of using > a trace. Here's a description of how to use it: > > http://stackoverflow.com/a/4140988/7432 > > > On Wed, Mar 6, 2013 at 6:49 PM, Bob Greschke <b...@passcal.nmt.edu> wrote: >> Hi! >> >> I'm messing with the .trace() function of StringVar()s to, in this case, >> check to see that the user has not entered more than an allowable number of >> characters (ckW() below does that). I'm replacing a monstrous <KeyRelease> >> .bind method. > _______________________________________________ > Tkinter-discuss mailing list > Tkinter-discuss@python.org > http://mail.python.org/mailman/listinfo/tkinter-discuss > _______________________________________________ Tkinter-discuss mailing list Tkinter-discuss@python.org http://mail.python.org/mailman/listinfo/tkinter-discuss
