Hi Conal
> Thanks much for the pointers, Mads. I read the binview source code,
> which uses a global mutable table to store per-instance data. I
> wonder if there's a nicer way. did you ever find one? - Conal
No. I did not even use the binview-way. I decided that I did not need it
enough to go with the binview-way :(
To be fair, I did not look very hard for a nicer solution.
Greetings,
Mads Lindstrøm
>
> On Nov 28, 2007 9:47 AM, Mads Lindstrøm <mad...@ya...>
> wrote:
> Hi
>
>
> Conal Elliott wrote:
> > I want to make (or find) a float-valued slider that displays
> its
> > current value and maybe its bounds. Does anyone have advice
> about
> > doing that sort of thing. I want the result to have have a
> > control-like interface, including a gettable attribute for
> the current
> > (float) value. Thanks, - Conal
>
>
> To have a gettable attribute you need to make the type
> containing the
> slider an instance of Valued. See
> http://wxhaskell.sourceforge.net/doc/Graphics.UI.WX.Classes.html#t%
> 3AValued and:
>
> import qualified Graphics.UI.WX as Wx
>
> instance Wx.Valued YourTypeContainingTheSlider where
> value = Wx.newAttr "Value" ioActionToGetValue
> ioActionToSetValue
>
> there is also other classes you can make your type an instance
> of. See
> the link above. You should properly make it an instance of
> Widget as a
> minimum.
>
> I also asked about something similar before. I got this reply
> http://www.mail-archive.com/wxh...@li.../msg00260.html .
>
>
> Greetings,
>
> Mads Lindstrøm
>
>
>
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