From: Martin Ankerl <martin.ankerl@...>
Date: 2005-03-28T22:39:47+09:00
Subject: Re: Fox vs Fox12

> I'm writing a very simple FxRuby application. When I run it on a newer
> version of FxRuby I need to require 'fox12'. When I run it on an older
> version, it needs require 'fox'. It seems to work fine on both
> environments except that that I need to change the require. I want to
> make the application generic so that it runs on both environments by
> doing something like:

I use the following code in XDCC-Fetch. It works with Fox 1.0, Fox 1.2, 
and Fox installed via rubygems. In Fox 1.0 several classes have 
different names than in 1.2, so I create aliases. Sometimes the 
arguments of method calls are also different, for this I set the 
FOXVERSION which I use to switch between different code.



# Load FXRuby: try gem, then Fox 1.2, then Fox 1.0
begin
   # try fxruby gem
   require 'rubygems'
   require_gem 'fxruby', '>= 1.1.0'
   require 'fox12'
   require 'fox12/colors'
   FOXVERSION="1.2"
   include Fox
rescue LoadError
   # no gem? try fox12 direct.
   begin
     require "fox12"
     require "fox12/colors"
     FOXVERSION="1.2"
     include Fox
   rescue LoadError
     # no gem, no fox12? try fox 1.0
     require "fox"
     require "fox/colors"
     # grep for FOXVERSION to find all code that depends on this
     FOXVERSION="1.0"
     include Fox
     FXMenuBar = FXMenubar
     FXToolTip = FXTooltip
     FXStatusBar = FXStatusbar
   end
end