Re: Invalid GtkTreeIter

[dhk <dhkuhl optonline net>]

Claudio Saavedra wrote:
> El mar, 03-11-2009 a las 16:53 -0500, dhk escribiÃ:
> > I have a program that declares a number of GtkTreeIter's.  Recently the
> > prepending to the parent iter broke.  I found out that, in some cases,
> > the stamp to the iter's are negative just after the iter is declared.
> > This means the iter is invalid.  The following test program does the
> > same thing.
> >
> > Why aren't all the stamps to the four iter's (a, b, c, and d) valid and
> > positive?
>
> Because your iters are not initialized at all... you are going the wrong
> way on the search for a solution to your initial problem. What do you
> mean by "prepending to the parent iter broke"?
>
> Claudio

In the gtk-demo program has a block as follows in the Tree View/Tree
Store example.  This doesn't initialize the the child iter before using
it in the gtk_tree_store_append(), but the stamp is valid.

/* add children */
      while (holiday->label)
        {
          GtkTreeIter child_iter;

          gtk_tree_store_append (model, &child_iter, &iter);
          gtk_tree_store_set (model, &child_iter,
                              HOLIDAY_NAME_COLUMN, holiday->label,
                              ALEX_COLUMN, holiday->alex,
                              HAVOC_COLUMN, holiday->havoc,
                              TIM_COLUMN, holiday->tim,
                              OWEN_COLUMN, holiday->owen,
                              DAVE_COLUMN, holiday->dave,
                              VISIBLE_COLUMN, TRUE,
                              WORLD_COLUMN, holiday->world_holiday,
                              -1);

          holiday++;
        }