Hello,

I'm trying to create a DataConverter that represents a callback function. The
code basically boils down to this:

module Lib
  include FFI::Library
  ffi_lib 'some-library'
end

class Foo < Proc
  extend FFI::DataConverter

  Callback = Lib.callback ... # usual call to FFI::Library.callback

  def self.native_type
    self::Callback
  end
end

[The reason I'm doing this is that I want to wrap procs passed from ruby in some
argument conversion code using a method defined on, in this case, Foo]

Now, I'm unable to figure out what the definition of Foo.to_native should be.
Foo::Callback is of type FFI::FunctionType, which doesn't have a to_native method.

Any ideas?

Thanks and regards,
-- 
Matijs