the haddock
The XTC library provides a typed interface to several wxHaskell controls.
- radio view (typed radio box)
- single-selection list view (typed single-selection list box)
- multiple-selection list view (typed multiple-selection list box)
- choice view (typed choice box)
- value entry (typed text entry)
my notes
XTC library was developed in Utrecht University, and has been used to develop Dazzle, a Bayesian Network toolbox, and very much a "real world" application. You can read more about XTC and Dazzle in their Haskell Workshop paper from 2005.If you're using wxhaskell, XTC could make your code a bit cleaner, without imposing a steep learning curve. Here is a quick example of the library in action.
And here is the source code. Notice how we work directly with the Fruit type, eschewing any intermediary strings:
import Graphics.UI.WX
import Graphics.UI.XTC
data Fruit = Apple | Banana | Orange deriving Show
instance Labeled Fruit where
toLabel = show
main :: IO ()
main = start $
do f <- frame []
txt <- staticText f [ text := "pick a fruit and I will give you a slogan" ]
radioV <- mkRadioView f Vertical [Apple, Banana, Orange] []
--
set radioV [ on select :=
do mf <- get radioV typedSelection
set txt [ text := slogan mf ]]
set f [ layout := margin 5 $ column 1
[ hfill $ widget txt, widget radioV ] ]
slogan :: Fruit -> String
slogan Orange = "orange you glad I didn't say 'orange'?"
slogan Apple = "an apple a day keeps, well you know"
slogan Banana = "buh-naaaaa-naaa"
If you like this kind of thing, be sure to also check out AutoForms and Phooey