Hello,

 

I'm trying to create a GUI by using wxHaskell. However I get the weird error message of "Not in scope "dt"", well so I sorted them so that my so called "dt" was in scope, however it failed. Can someone please tell me how I can solve this error?

 

           ... A lot of code that is not relevant in my opinion, if I'm wrong please correct me and I will post my full code

 

            --Debug text --
            dt <- staticText f [text := "Hello world!"]
           
            imagePanel <- panel f [position := Point 2 2, clientSize := Size 100 100, tooltip := "This is a drawPanel", bgcolor := rgb 255 255 255]
            set f [ clientSize := Size 700 500,
                    menuBar := [mFile, mHelp],
                    visible := True,
                    on (menu exit) := close f,
                    on (menu open) := onOpen f vFile ]
 
                       
            return ()
           
            where
                onOpen :: Frame a -> Var b -> IO ()
                onOpen frame var = do   file <- fileOpenDialog frame False True "Open File" [("PGM bestanden (*.pgm)",["*.pgm"]),("Alle bestanden (*.*)",["*.*"])] "" ""
                                        case file of
                                            Nothing ->      return ()
                                            Just file ->    set dt [text := "HELLO"]
                                                            return ()

 

Thank you for your help, I really owe haskell-cafe.

 

Greetings Tsunkiet Man