Re: Accessing a class pointer and class methods

[Gaal Yahas <gaal forum2 org>]

Sorry to reply to myself, but I figured out how to do this.

On Sat, Jul 12, 2003 at 10:25:36AM +0300, I wrote:
> How do I call a class method on some GObject-based type?
>
> How do I even *implement* such a method?
>
> I suppose a fair enough answer to the first question, if this is a type
> I'm developing, is to export the method as a function.

The answer to the second question should have been obvious, too :)

Class data are just file-level static variables in the file where the
class is implemented; no need to fetch the class struct from anywhere
or any fancy hackery.

What I still want to know is what is the proper way to implement instance
finalization when the object is a GObject and not a GtkObject (GtkObjects
have a "destroy" signal I can conncet to). See the example below: how
do I have unique_thing_finalize called, say, when the thing's refcount
drops to zero?

uniqething.c:

     static GHashTable *thing_cache;

     void
     unique_thing_class_init() {
         thing_cache = g_hash_table_new(g_str_hash, g_str_equal);
     }
     void
     unique_thing_class_finalize() {
         g_hash_table_destroy(thing_cache);
     }

     GObject*
     unique_thing_new(gchar *id) {
         UniqueThing* ut = g_hash_table_lookup(thing_cache, id);
         if (ut)
             return(ut);
         ut = UNIQUE_THING(g_object_new(unique_thing_get_type(), 0));
         ut->id = g_strdup(id);
         g_hash_table_insert(thing_cache, g_strdup(id), ut);
         return ut;
     }
     void
     unique_thing_finalize(UniqueThing *ut) {
         g_hash_table_remove(thing_cache, ut->id);
     }


Thanks,
Gaal

-- 
Gaal Yahas <gaal forum2 org>
http://gaal.livejournal.com/