DLL callback to ruby

[Dan Rathbun]

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You will need to do some studying:

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1. Read and bookmark this post:

[Info] C/C++ Ruby extensions & SketchUp plugins

1. You will need to download the Ruby C source, as your DLL code must:

%(#404080)[include "ruby.h"]

1. Read the old "Pick-Axe" book's chapter on writing a Ruby extension.

Programming Ruby: Extending Ruby

1. Take note of the Ruby C-side functions:

• rb_eval_string( *string_to_eval* )* rb_funcall
  ... described in section "Evaluating Ruby Expressions in C"

1. okay, a dedicated C side Ruby book is also now available:

• http://media.pragprog.com/titles/ruby3/ext_ruby.pdf