[Gtk-sharp-list] gtk.entry validation difficulty

Pedro Guridi pipiten at gmail.com
Thu May 22 14:24:26 EDT 2008

Jesper, people,

Here I found this short tutorial for restrict the input in a text
entry only to numbers, quite useful.. maybe it's what are u looking
for, it's in Spanish but I'm sure you can understand the code.., it
also let you download a .tar.gz with the code.
Link: http://www.developarts.com/limitar_la_captura_de_un_entry


Pedro Guridi

On Wed, May 21, 2008 at 6:59 PM, Chris Howie <cdhowie at gmail.com> wrote:
> On Wed, May 21, 2008 at 4:18 PM, Jesper K. Pedersen <linux at famped.dk> wrote:
>> The software I am writing is for assisting aviation mechanics in
>> registering their use of aircraft spare parts (I am the leader of an
>> spare parts inventory in a small company).
>> The form is a parts entry registration form where I have a range of
>> fields - of which 4 needs to be validated and correct until the system
>> accept to add the information to its central database.
>> I fear that if the validation comes at the point of the mechanic being
>> "done" with entering data (some is entered via a barcode reader) and
>> there are problems the mechanic will have a difficulty resolving the
>> issues. Some of the issues can actually force the mechanic to have to
>> leave the terminal to get further data before he can finish up - so to
>> assist the mechanic I have each field validated at entry time and the
>> most significant done as the very first entry (dont know if that makes
>> sense).
>> I have also tried to make the system as "mechanic friendly" by having it
>> tell you what is wrong with the entry - and where possible it
>> will suggest what needs to be done to fix it (like suggesting
>> partnumbers if a partnumber isnt recognized in the inventory system)
> Then checking on lost focus seems like the most appropriate thing to
> do.  Note that when I say validate, I do *not* mean the type of
> validation that pops up horribly annoying dialog boxes on failure.
> (We have stuff like that where I work.  I could rant about it for
> days.)  I'm talking about the kind of validation that will annotate
> invalid fields with some indicator and disable all mechanisms that
> could be used to submit the form (like the Accept button).  Clicking
> the indicator could provide further explanation in a dialog.
> An even better idea would be to keep the error messages short and
> display them below the field itself.
> I'm not sure how doing this on-blur would be an issue.
> --
> Chris Howie
> http://www.chrishowie.com
> http://en.wikipedia.org/wiki/User:Crazycomputers
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