gem-graph-client/include/action.h

// https://docs.gtk.org/gio/class.MenuItem.html
// https://docs.gtk.org/gio/ctor.MenuItem.new.html
//
// https://docs.gtk.org/gio/class.SimpleAction.html
// https://docs.gtk.org/gio/ctor.SimpleAction.new.html
//
// https://forge.a-lec.org/gem-graph/gem-graph-client/src/branch/devel/include/ui.h
// https://forge.a-lec.org/gem-graph/gem-graph-client/src/branch/devel/src/ui/events.c
// https://forge.a-lec.org/gem-graph/gem-graph-client/src/branch/devel/src/ui/application.c
//
// https://en.wikipedia.org/wiki/GIO_(software)

#include <unistd.h>
#include <gtk-4.0/gtk/gtk.h>

void on_preferences_action(GSimpleAction *action,
                    GVariant *parameter,
                    gpointer user_data);