Re: [Pyfltk-user] Custom Fl_Valuator::format() in fltk

[Andreas H. <and...@bl...>]

Hi Dima

Actaully, this should work out of the box now. To derive from 
Fl_Valuator, you need something like the following:
class My_Valuator(Fl_Valuator):
     def _init__(self, x, y, w, h, label):
         Fl_Valuator.__init__(self, x, y, w, h, label, len(label))

     def format(self):
         return (4, "test")

In addition, you will need to override the draw() method, as this is 
also not provided by Fl_Valuator. Please let me know if you see some 
problems with your implementation.

Best regards

Andreas

On 3/25/25 17:21, Dima Kogan wrote:
> and...@bl... writes:
>
>> Yes, Fl_Valuator cannot be used on its own and should be derived from.
>> This is, for instance, what has been done with Fl_Adjuster, which is
>> derived from Fl_Valuator.
> We're not understanding each other. What I ACTUALLY want to do is to
> build a log-scale Fl_Slider. This is derived from Fl_Valuator. And I'd
> need to create my own derived class Fl_Log_Slider(Fl_Slider) in Python,
> and this Fl_Log_Slider would need to have a def format() that overrides
> the virtual implementation in Fl_Valuator. And this format() would need
> to return its string in the way the C++ api expects. Can we do that?
>
>
> _______________________________________________
> Pyfltk-user mailing list
> Pyf...@li...
> https://lists.sourceforge.net/lists/listinfo/pyfltk-user