Bigloo GTK-Server Bindings

So frikkin' alpha, you wouldn't believe it (v.4/Inf)

Overview

Do you like forms? I do. Buttons, textboxes, and shiny scrollbars...

Do you like Scheme? I do. Macros, continuations, closures, and tail recursion...

Not long ago, someone was complaining on a mailing list that GUI's were hard to build with Bigloo. Well, this should make it considerably easier. The files below are the library (gtk-server.sch), and the example program pictured above (test.scm), which shows some useage of the library.

Colorized human-readable version		Vanilla-text machine-readable version
gtk-server.sch test.scm		gtk-server.sch test.scm

Installation

Get Bigloo (http://www.bigloo.org) and install it somewhere. (Silently thank Manuel Serrano for making this a possibility.)
Get GTK-Server (http://www.gtk-server.org) and stick the binary and config file in your path somewhere. (Silently thank Peter van Eerten for making this a possibility.)
Download these files, and compile the example test.scm like bigloo -o test test.scm
Run the resultant test program: it should look like the screenshot above.

Documentation

May the source be with you.

You can get Scheme predicates to test for any GTK-Server events ala the distributed example, test.scm. No callback machinery is necessary because of GTK-Server's design. This makes programs Bigloo-backend agnostic.
GTK-Server functions that take NULL arguments don't need those NULL arguments specified in the use of their corresponding Scheme functions. Skip right over them.
Widget types should be considered opaque. Don't go messing with the contents. (They are kept as a string, should you want to store them in a hashtable).
Communication with the GTK-Server via the (with-gtk-server ...) macro should be "safe". If it's not, now, eventually it will be.

ChangeLog

This release relaxes the Bigloo 2.7A Beta (July 7th+) requirement in favor of using new features in GTK-Server v.2.0.3. This release no longer has a 2K limit on data returned from the user interface, as well as being able to read multiline strings. Also, users can use BOOL in function arguments, now, as opposed to only having BOOL available as a return type. Peter also upgraded his release to be based upon GTK 2.6.8, meaning fewer Windows bugs.
v.3/Inf: This release includes a major fix that relies on the latest Bigloo, 2.7A Beta (July 7th+), only available in source form via the Bigloo FTP server. You can now safely read multiline strings from GTK-Server, no matter what platform you are on. Also added the ability to use enums from their scheme name.
v.2/Inf: This release cleaned up the namespace pollution significantly. Everything GTK-Server related is in the (with-gtk-server ...) macro (which means if you want to override function definitions, you must do it within the lexical contour introduced in that macro).
v.1/Inf: This initial release suffered from namespace pollution issues and a horrible bug disallowing use of functions with a string return type.

Bugs

Warning: I've done very little testing, specifically on the Unices. Bugs? shutej@crazilocks.com