Re: [gl4java-usergroup] Destroying and Creating canvases in a single window ? ? ?

[<lec...@ya...>]

Oops, I sent my reply to Tobias directly, my mistake,
so here is the mail :

Hi !

Actually, the "glgDestroy Failed" occured when I
called cvsDispose ! I tried everything, but nothing
seemed to work...
As I'm using the GLEventListener way, I thought this
is the reason, maybe a bug when removing the listener.
But as I tried the subclassing way, I saw that it was
the same... 
Even if everything is properly closed (canvas stopped,
listener removed, etc.), it occurs when I call
cvsDispose... So, what happens ?

And a little question : is the developpment of GL4Java
stopped ? Or is Sven Goettel still working on it, and
making a JFC/Swing implementations which works,
because I don't like to mix Swing (JFrame) and AWT
(GLCanvas and not GLJpanel) things together.

Florent GEFFROY

 --- "Tobias L. George" <tg...@ul...> a
écrit : > Florent,
> 
> M'excuse, mais ma frances c'est plus mal que ton
> anglais . . .
> donc . . . I will be responding in english.  I think
> that what
> you may need to do to get rid of your problem is to
> make
> certain that you are calling cvsDispose() on the
> GLCanvas
> you are trying to get rid of PRIOR to the canvas
> being
> removed from the window, or its containing
> component.
> 
> After this, you will not have the "gljDestroy failed
> . . ."
> message anymore, but I think your app will still
> slow down
> after a while.  I am still working on finding this
> problem.
> 
>                                          Peace, Love
> and Hair Grease,
> 
>                                                    
> -TOBY
> 
> Florent Geffroy wrote:
> 
> >I have exactly the same problem ! When trying to
> >destroy a Canvas, it tells me something like
> >"gljDestroy failed"... 
> >Actually, glj designate the GLContext, but I
> founded
> >that it is properly closed, so I can't explain why
> >this error occurs...
> >
> >Florent GEFFROY
> >
> > --- "Tobias L. George" <tg...@ul...> a
> >écrit : > Hello all,
> >  
> >
> >>I am wondering whether or not anyone else is
> having
> >>trouble
> >>destroying and creating GLCanvases in a single
> >>window.  I
> >>have tried with both the binary release from
> >>Jausoft, and the
> >>CVS release that was on sourceforge as of March
> 22,
> >>2003.
> >>
> >>I think that something is not being properly
> >>disposed of when
> >>a GLCanvas is destroyed.  I am able to create and
> >>destroy
> >>a few GLCanvases but after a while the GLCanvases
> >>that are
> >>created slow to a crawl when drawing.
> >>
> >>Try as I might, I have only been able
> >>to find a single bug in GL4Java.  It is in the
> >>GLCanvas code,
> >>during the first paint, the canvas adds itself to
> >>the top level
> >>window as a listener.  The problem is, that it
> never
> >>removed
> >>itself as a listener and so it would never get
> >>finalized.  This
> >>is not even a bug if you look at it from the point
> >>of view of
> >>always needing to destroy the top-level window in
> >>order to
> >>destroy a GLCanvas, although in practice you end
> up
> >>having
> >>to exit the program.  Be that as it may, I am at a
> >>loss for the
> >>moment as to why this slow down is happening when
> I
> >>create
> >>and destroy more than a few GLCanvases.  I am
> >>looking
> >>through the GL4Java code again now, and I will
> find
> >>out why
> >>sooner or later by the grace of VisualC, but if
> >>someone has a
> >>clue, could you help a brotha out ? ? ?
> >>
> >>
> >>                      Peace, Love, and Hair
> Grease,
> >>
> >>                                        -TOBY
> >>
> >>
> >>
> >>
> >>    
> >>
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