Re: Basic question - GtkTreeviewForeachFunc

["Alexandru Csete" <oz9aec gmail com>]

On 24/05/06, John Coppens <john jcoppens com> wrote:
> Hi guys.
>
> I'm trying to get this working:
>
> --------------- The function
> gboolean
> save_one_sat(GtkTreeModel *model, GtkTreePath *path, GtkTreeIter *iter,
>                 gpointer data)
> {
>   // do something
> }
>
> --------------- Is passed to another function like this:
>   satlist_foreach_sat(save_one_sat);
>
> --------------- This function is declared as:
> void            satlist_foreach_sat(GtkTreeModelForeachFunc func);
>
> --------------- Where the actual GtkTreeModelForeach will be called:
>   gtk_tree_model_foreach(GTK_TREE_MODEL(sat_store), func, NULL);

Shouldn't this be:

gtk_tree_model_foreach(GTK_TREE_MODEL(sat_store), save_one_sat, NULL);

This will call save_one_sat for each row in sat_store. Otherwise I
don't know what 'func' is.

> This segfaults, and gdb says the parameter passed to satlist_foreach_sat
> is actually 0x1, not the address of the save_one_sat function. I've tried
> declaring save_one_sat as static, I've typecasted the save_one_sat on
> passing it as parameter. I've found several tutorials on the net that did
> just this...
>
> I guess the 0x1 is because the function is gboolean, and that value is
> 'TRUE', but why doesn't the function address get used?
>
> Sorry if this is too basic... please point me to some good tutorial...

I have been using the GtkTreeView Tutorial at
http://scentric.net/tutorial/
to learn how to use the tree view stuff.

> John

Cheers
Alex