module tut2_4

// ********************************************************************************
// Clean tutorial example program.
//
// This program creates a dialog that displays the "Hello world!" text.
// ********************************************************************************

import StdEnv, StdIO

Start :: *World -> *World
Start world
    = startIO NDI Void initialise [] world
where
    initialise pst
    # (error,pst) = openDialog Void hello pst
    | error<>NoError = closeProcess pst
    | otherwise = pst

    hello = Dialog ""
        ( TextControl "Hello world!" []
        )
        [ WindowClose (noLS closeProcess)
        ]