Playing with F#
This little pretty window:
is a result of this tiny bit of F# code:
#light
open System
open Gtk
Application.Init()
let window = new Gtk.Window(“F# Gtk”)
let vBox = new Gtk.VBox()
let closeButton = new Gtk.Button()
let label = new Gtk.Label(“Hello World!”)
window.WindowPosition < – Gtk.WindowPosition.Center
window.SetDefaultSize(160, 40)
window.Destroyed.Add(fun _ -> Application.Quit() )
closeButton.Label < – “Close”
closeButton.Clicked.Add(fun _ -> Application.Quit() )
vBox.BorderWidth < – (uint32) 6
vBox.PackStart(label, false, false, (uint32) 6)
vBox.PackStart(closeButton, false, false, (uint32) 6)
window.Add(vBox)
window.ShowAll()
//brown paperbag update: I’ve missed this line during Copy/Paste
Application.Run()
Next step is piece of code that actually does something semi-useful. I’m thinking about implementing a convex hull algorithm which F# seems pretty well suited for.
November 18th, 2008 at 11:03
Piotr — ran that in Mono, the window does nothing, Close button doesn’t work, nothing reacts. Should there be a wait loop somewhere?
November 18th, 2008 at 12:40
@Alexy Runs fine on my machine, but I compile it in Windows (and .Net) and run it on Mono 2.0.
You can try my compiled exe from here:
http://dl.getdropbox.com/u/118505/FsGtk.exe
November 19th, 2008 at 8:05
Ah — I do it from fsi, the toplevel. Once I #load it, is shows something like,
namespace FSI_0013
val window : Window
val vBox : VBox
val closeButton : Button
val label : Label
>
– then the window is abandoned and doesn’t respond. I wonder if I should add something to run from F# Interactive…
November 19th, 2008 at 21:28
Well, I tried 3 different Gtk frameworks for Mac and am in the process of compiling gtk-sharp-2.12 on cygwin in VMWare Fusion, and adding the last line fixed everything! :) Thanks, man! :)
November 20th, 2008 at 4:59
Not a problem. I should have picked it up earlier. Sorry… :-)