Re: gtk+2 and Lua - first sample

[Asko Kauppi <asko.kauppi@...>]

2 layers is a must :) but how about three, or more?

The first one (in C) is a plain C/Lua API (doing some table stuff etc. 
but mostly following the C API). This is just a lot of work, and rather 
unusable (or, you could be coding in C just the same..)

The second one (in Lua) is an object oriented one, tying the bits and 
pieces together into a more realistic framework. This is probably "how 
the GTK+ object system was meant to be" kind-of level.

The third one (and on..) will be helper functions for this and that, 
such as gathering menus and box layouts by simple tables, instead of 
doing them part by part.

Some examples:

  C:
    label = gtk_label_new( "Enter a message:" );
    gtk_box_pack_start (GTK_BOX (hbox), label, FALSE, FALSE, 0);
    entry = gtk_entry_new ();
    gtk_entry_set_text (GTK_ENTRY (entry), "");
    gtk_editable_select_region (GTK_EDITABLE (entry), 0, -1);
    gtk_box_pack_start (GTK_BOX (hbox), entry, FALSE, FALSE, 0);

  Lua (not much different):

    label= gtk.label_new "Enter a message:"
    hbox:box_pack_start( label, false, false, 0 )
    entry= gtk.entry_new()
    entry.text= ""      -- or: entry:set_text("")
    entry:editable_select_region( 0, -1 )
    hbox:box_pack_start( entry, false, false, 0 )

  Lua (much different):

    entry= gtk.entry_new{ text="" }
    entry:editable_select_region( 0, -1 )

    vbox= gtk.vbox_new{ { "Enter a message:", entry },   -- 1st row (no 
need for label, nor hbox_new)
                        "--",               -- separator (no need for 
separate separator)
                        button }            -- 3rd row


p.s. Make IUP for OS X and I'll be interested. ;P


15.2.2005 kello 21:48, Herbert Leuwer kirjoitti:

>  I can only agree to Diego: 2 layers. However, since I'm currently 
> working with IUP,
> which has an almost ideal level of abstraction for a rapid GUI 
> development and for
> applications, where the GUI itself is not the main selling message, I 
> would like to
> see IUP as the higher abstraction layer.
>
> Herbert