On 8/23/06, kandlinger / gmx.de <kandlinger / gmx.de> wrote: > Thanks for your help, but the problem in my application is: > 1. It is c++ code It doesn't matter. C++ code can be used within a Ruby extension. > 2. The c++ code is already written (and not designed for Ruby) Doesn't matter either. There are literally hundreds of extension libraries around there, some of which interface with C++ code that was never designed with Ruby in mind (e.g. the Fox GUI toolkit, and the FXRuby extension).