[Ironruby-core] Trying to call interface method for a C# class

[John Cawley III]

I am attempting to call an interface method for a .net class and am
having difficulty. I'm using IronRuby v1.1.2 and working with
ScintillaNet, a .net wrapper for the Scintilla control.

A portion of the ScintillaNet::Scintilla class is below:

  namespace ScintillaNet
  {
    ...
    public partial class Scintilla : Control, INativeScintilla,
ISupportInitialize
    {
      ...
    }
  }

And a portion of the ScintillaNet::INativeScintilla interface is below:

  namespace ScintillaNet
  {
    public interface INativeScintilla
    {
      ...
      void BackTab();
      ...
    }
  }

I came across another forum discussion
http://rubyforge.org/pipermail/ironruby-core/2009-January/003520.html,
which seems to fall along the lines of what I'm trying to do, but I'm
not sure the features discussed there are implemented yet.

I've reduced the troublesome code to a relatively short length to play
with alternative approaches:

  require "bin/ScintillaNet"
  class ScintillaNet::Scintilla
    include ScintillaNet::INativeScintilla

    def self.ztest2()
      z = ScintillaNet::Scintilla.new()
      puts "z[#{z}]"
      #; z.BackTab() # undefined method `BackTab' for
ScintillaNet.Scintilla:ScintillaNet::Scintilla (NoMethodError)
      #; ScintillaNet::INativeScintilla(z).BackTab() # undefined method
`INativeScintilla' for ScintillaNet:Module (NoMethodError)
      #; ScintillaNet::INativeScintilla.BackTab() # undefined method
`BackTab' for ScintillaNet::INativeScintilla:Module (NoMethodError)
      puts "fence"
    end
  end

  ScintillaNet::Scintilla.ztest2()
  puts "done"

The three approaches above yield the errors to the right of each line.

Thanks in advance for any assistance you might be able to provide.
--John

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