Re: [Fxruby-users] FXGLLine in glviewer

[Joel V. <vj...@PA...>]

Peter J. Puchyr wrote:
> Hi,
> 
> I'm just trying to learn how to use OpenGL in FXRuby.  I tried
> to add the drawing of a line to the glviewer example, using a
> statement completely analogous to the other objects in the scene,
> namely,
> 
>   gp2.append(FXGLLine.new(-1.0,-1.0,-1.0, 1.0,1.0,1.0))
> 
> placed after the FXGLCylinder statement, and this produces the
> error message:
> 
>   in `append': This FXGLObject * already released (RuntimeError).
> 
> It makes no difference if I create and name the object in a separate
> statement, and then append it to the group of FXGLObjects; the error 
> still occurs with exactly the same message.
> 
> Have I done something completely stupid, or is this a bug?
> 
> Peter
> 

I ran into this problem too, and never understood it. So I always append 
other shapes (such as a very narrow rectangle, instead of a line).

Joel