> > > How do i retreive the value from an Fl_Int_Input and assign=20 > > it to my variable? I notice that the value() member still=20 > > reads the input as a char string, so i will need to convert=20 > > this manually, or is there another way provided to retrieve=20 > > the value as an integer? > > No, you need to use strtol() or similar on the string. > > We don't do it automatically as it is not always obvious what radix the > number is meant to be, but allowing the user to convert it via strtol() > allows them to get the result they want. > > Note that I'd caution against using atoi() or something simple like that > as it gives less control over the conversion applied, and does not check > for errors as robustly as strtol() in general. > > > I thought that the Fl_Int_Input would provide an integer, but=20 > > i see it is named as that because it refuses any other input. > > Indeed. > > > Aside from this initial validation. do the Fl_Input types=20 > > require manual validation for the amount of characters=20 > > entered and/ or range for ints or floats? or again is there a=20 > > native feature for this? > > If you want some specific validation, you need to do this yourself. > Again, it's the same problem really; when presented with a string of > digits, the fltk lib will not necessarily be able to determine, for a > given app on a given host platform or numeric radix, whether that's a > "valid" numeric string or not.=20 > The app knows what "number" would be valid for any given input however > (I assume!) so it is best that the app do the check itself. > > > Thanks for that, i am well set now, yes it makes sense for the app to be responsible for most validation, after all it is a 'light' toolkit, i would rather have that than a gig worth of bloat to mess with!
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