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From: Tim Rentsch <tr.17687@z991.linuxsc.com>
Newsgroups: comp.lang.c
Subject: Re: Help requested with P99-based macro to create Wayland listeners
Date: Wed, 10 Apr 2024 09:03:43 -0700
Organization: A noiseless patient Spider
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Blue-Maned_Hawk <bluemanedhawk@invalid.invalid> writes:

[request for example]

> MAKE_LISTENER(wl_registry, global, global_remove);
>
> ?
>
> static const struct wl_registry_listener wl_registry_listener = { 
> .global = callback_wl_registry_global,
> .global_remove = callback_wl_registry_global_remove
> };
>
> ?
>
> MAKE_LISTENER(xdg_wm_base, configure, close, configure_bounds,
> wm_capabilities);
>
> ?
>
> static const struct xdg_wm_base_listener xdg_wm_base_listener = {
>  .configure = callback_xdg_wm_base_configure,
>  .close = callback_xdg_wm_base_close,
>  .configure_bounds = callback_xdg_wm_base_configure_bounds,
>  .wm_capabilities = callback_xdg_wm_base_wm_capabilities
> };

I think it isn't too hard to write a macro to do what you
want.  I'm pretty sure it's possible to define such a macro
using the P99 macros to do the iteration, but I don't see
an easy way to do it.  If I were in need of such a macro,
probably I would ignore the P99 macros and just build a
simpler solution that works for the task at hand.