Beppe wrote:
> I would validate values input, on key, in multiple Entry widgets create at
> run time
>
> I wrote this snip but even if the entry are created and the callback work
> well the relative value is missing
> my_list = (2.14,18.3,76.4,2.38,0.425,2.68,1.09,382,8.59,0.495)
>
> for i in my_list:
> #this work
> #w = tk.Entry(self, bg='white')
> #this doesn't work
> w = tk.Entry(self, bg='white', validate = 'key',
> validatecommand = self.vcmd) w.insert(tk.END, i)
> w.pack()
>
> def validate(self, action, index, value_if_allowed,
> prior_value, text, validation_type,
> trigger_type, widget_name):
> # action=1 -> insert
When you add
print(text)
here to debug your code the old-fashioned way you'll note that text is, e.
g. '2.14' and thus will not pass the `text in ...` test below.
> if(action=='1'):
> if text in '0123456789.-+':
> try:
> float(value_if_allowed)
> return True
> except ValueError:
> return False
> else:
> return False
> else:
> return True
>
>
> root = tk.Tk()
> app = Application(master=root)
> app.mainloop()
>
>
> tips?
>
> regards beppe
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