WxHaskell thinks my strings are 1 character long

Question

Whenever I use a string in WxHaskell, it thinks the string is one character (it only displays the first character). It only happens when using the WxHaskell functions, not functions like putStrLn.

For example, the bug happens in this code

module Main where
import Graphics.UI.WX

main = start hello
hello = do f <- frame [text := "Hello"]
           quit <- button f [text := "quit", on command := close f]
           set f [layout := widget quit]

It doesn't happen in this program:

module Main where

main = putStrLn "hello"

I get a form titled "Hello" with a single button labelled "quit" when running this program. — Rotsor, Aug 20 '11 at 17:53
That's why I'm asking for help. I can't see what is wrong. I tried reinstalling, but that didn't work. — Anonymous, Aug 20 '11 at 23:58

score 4 · Accepted Answer · answered Aug 21 '11 at 01:23

4

I had this behavior a while back. Turned out to be a unicode issue. Recompiling with some sort of unicode flag fixed things, IIRC.

answered Aug 21 '11 at 01:23

Conal

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This sounds likely. An english letter in little-endian UTF-16 would look like a 1 character string if interpreted as zero-terminated UTF-8. – hammar Aug 21 '11 at 01:51
Do you know which flag it is? – Anonymous Aug 21 '11 at 20:42
I should probably say that I'm using GHC. – Anonymous Aug 21 '11 at 20:51
Hello? Do you know which flag it is? – Anonymous Aug 25 '11 at 15:23
1

See the question *[wxHaskell labels can't display full text](http://stackoverflow.com/questions/6171375/wxhaskell-labels-cant-display-full-text)*. – Conal Aug 26 '11 at 16:51

WxHaskell thinks my strings are 1 character long

1 Answers1