Re: unmap event not emitted?

[Oscar Lazzarino <oscar lazzarino gmail com>]

On Fri, May 21, 2010 at 9:16 PM, Emmanuele Bassi <ebassi gmail com> wrote:
> On Thu, 2010-05-20 at 12:41 +0200, Oscar Lazzarino wrote:
>> Hi, I'm trying to catch the unmap or unmap-event signals, but it looks
>> to me like they are not emitted.
>
> don't.
>
> https://bugzilla.gnome.org/show_bug.cgi?id=613302
>
>   * For performance reasons GTK+ may not emit ::unmap-event, so one
>   * should always also implement ::unrealize in order to release
>   * resources and disconnect signal handlers.

But you CAN'T release your textures and other GL resource in the
unrealize method, because the gdk window will be already unmapped
then, and gl_begin (either as glwindow->gl_begin(get_gl_context()) in
C++ or gdk_gl_drawable_gl_begin (gldrawable, glcontext in plain C)
will fail :-/

O.