Re: g_hash_table_find()

[Vlad GALU <dudu diaspar rdsnet ro>]

On Sun, 20 Jun 2004 18:48:55 +1000
Russell Shaw <rjshaw netspace net au> wrote:

> Hi,
> What does g_hash_table_find() return?
> It returns a gpointer, but the api is unclear
> on what it is.
>
> Returns: The value of the first key/value pair is returned, for which func
>           evaluates to TRUE. If no pair with the requested property is found,
>           NULL is returned.
>
> How can it point to a key *and* its value? I'm trying to get the key
> value with little success (it's stored as a guint).

        You might want to try g_hash_table_lookup(). You give a key as an argument, and it returns the 
associated value. If there's no value identified by the supplied key, it returns NULL.
        I have written a small software that makes extensive use of the GHashTable structure: 
http://night.rdslink.ro/dudu/glflow/glFlow-0.0.1.tar.gz

> I'm using g_direct_hash().
>
>
> static gboolean
> findfunc(gpointer key, gpointer value, gpointer user_data)
> {
>      return !strcmp(value,user_data);  // value is a gchar*
> }
>
> gchar *s="groundzero";
> gpointer key=g_hash_table_find(hashtab,findfunc,s);
> guint n=GPOINTER_TO_UINT(key);
> fprintf(stream,"%u",n);
> _______________________________________________
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> gtk-app-devel-list gnome org
> http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list


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