Re: [GtkGLExt] widget in modal dialog

[jlm <jsado_sc4 earthlink net>]

Sorry for replying so late, just got caught up on my email. I have 
experienced this problem for a couple of years. My email regarding this 
issue is prior to the current archives that only go back to February of 
2004. At any rate I think the response was "works for me".

I did determine that the problem would not appear if I forced the 
application to run in software mode and not in hardware-accelerated 
mode. See if you get that behavior.

What version of gtktlext(mm) are you using? I have finally stopped 
getting these errors with gtktlext 1.0.6 and gtktlextmm 1.0.0.

Finally, what graphics card are you using? I was having problems with 
this on a voodoo 3 card.

Hope this helps.

Tobias Eberle wrote:
> Hello,
>
> in my application I have a mainwindow without opengl usage and a modal
> dialog using an opengl widget. Starting the program and opening the
> dialog works well, but if I close the dialog and open it again (it is a
> new instance) or closing the whole program and start it again, I get the
> following error message:
>
> The program 'vvis' received an X Window System error.
> This probably reflects a bug in the program.
> The error was 'BadColor (invalid Colormap parameter)'.
>   (Details: serial 13445 error_code 12 request_code 1 minor_code 0)
>   (Note to programmers: normally, X errors are reported asynchronously;
>    that is, you will receive the error a while after causing it.
>    To debug your program, run it with the --sync command line
>    option to change this behavior. You can then get a meaningful
>    backtrace from your debugger if you break on the gdk_x_error()
> function.)
>
> I get this message if I start then other gtkglext apps, too.
> I have to restart X to get rid of this message.
>
> If I put the widget on the mainwindow too, everything works fine.
>
> I figured out that the problem is related to Gdk::GL::Config::create().
> I call this in the constructor of my widget. If I do this in the
> mainwindow instead it works again :)
>
> Can anyone tell my why this problem happens?
>
> Bye, Tobias
>
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