From: emilie3012@... (Steve Hart)
Date: 2003-04-15T10:01:04+09:00
Subject: Re: inheirit from a swig-class

"Simon Strandgaard" <0bz63fz3m1qt3001@sneakemail.com> wrote in message news:<pan.2003.04.14.18.04.28.688118@sneakemail.com>...
> I want to inheirit from a SWIG-class, but I cannot. Why?
> Can you help me with this inheiriting problem?
> 
> 
> If I run the "a.rb" program I get this error message (don't mind the
> opfuscated bactrace format :-)
> 
> EXCEPTION (RUBY):
> name=cannot invoke ruby-function
> where=./a.rb:7
> class=TypeError
> message=wrong argument type RubyView (expected Data)
> backtrace=      from ./a.rb:7:in `repaint'
>         from ./a.rb:7:in `insert'
> 
> > cat a.rb
> class RubyView < Embed::Redirect
>         def initialize
>                 super
>         end
>         def insert
>                 repaint
>         end
> end
> >
> 
> 
> I made this "b.rb" workaround.. and there is no problems.
> 
> > cat b.rb
> class RubyView
>         def initialize
>                 @redir = Embed::Redirect.new
>                 super
>         end
>         def insert
>                 @redir.repaint
>         end
> end
> >
> 
> 
> Thanks in advance
> Simon Strandgaard

Hi Simon,
I assumed this was prob with tutorial code. Had a look and got same
error. Found if I change the call in NewWrap from:

VALUE self = rb_class_new_instance(a.n, a.argv, klass);

to:

VALUE self = rb_funcall2(klass, rb_intern("new"), a.n, a.argv);

it all works. I started looking thru the ruby code but then my brain
started to hurt. Would be intersted to know why?
Cheers
Steve