Re: Listbox, Treeview and attaching pointers to rows

[Damien Caliste <damien caliste cea fr>]

Hello,

Le 24/10/2007, Arto Karppinen <exeonical mail suomi net> a Ãcrit :
>  Row one -> Data pointer 1
>  Row two -> Data pointer 1
>  Row n+1 -> Data pointer 1
> How would one accomplish such amazing task?
Your data pointer should added in your model:
enum
{
        COL_LABEL,
        COL_DATA,
        NB_COLS
};

GtkListStore *list;
list = gtk_list_store_new (NB_COLS, G_TYPE_STRING, G_TYPE_POINTER);

Then, when you populate your model, store your data pointers:
for (i = 0; i < n; i++)
{
        /* Compute the values, associating a label and
           and data pointer. */
        [...]
        /* Store them in the liststore. */
        gtk_list_store_set(list, &iter,
                     COL_LABEL , label_i,
                     COL_DATA  , (gpointer)data_row_i,
                     -1);
}
You don't need to store your data pointers into a custom array, they are
stored for you in the liststore.

Finally, in your selection callback (at the iterator iter), retrieve the
stored data pointers:
gpointer data_row;
gtk_tree_model_get(GTK_TREE_MODEL(list), &iter,
                   COL_DATA, &data_row, -1);

Damien.