Re: How to get Position of GtkTreeIter?

[Markus Lausser <sgop ngi de>]

On Mon, 2003-08-18 at 22:12, Matthias Mann wrote:
>             
>         ***  How to get Position of GtkTreeIter?  ***
>  
>  Dear People! Need your suggestions/ideas for this situation:
>  
>  In one loop i added some GtkListIter to a Column:
>  
>       gtk_list_store_insert(listView->listStore,
>                            &listView->listIter, position);
>  
>  Note: I always used the same iterator (address of listView->
>  listIter can not be changed in my code).
>  
>  Later i have a callback ("changed") that takes action if a
>  user of my app selected e.g. the 17'th entry in this list
>  fiew that is position 16 (begin of count=0). But callback
>  function don't know about this 17'th position. Now, how can i
>  get this position?
>  
>  I'm searchig for a function like "gtk_list_view_get_position()"
>  in cooperation with gtk tree selection mode (value that we'll
>  get by calling gtk_tree_view_get_selection(); ). Is anybody
>  here who knows about such possibility?

If you want to know the index only to lookup your object in an array,
then i suggest to simply add an additional data field of to your
ListStore (just increase the first argument of gtk_list_store_new() and
add a G_TYPE_POINTER).
When adding new rows you also need to pass the pointer to your object:
gtk_list_store_set(model, &iter, [<some_fields>],
                   x, &your_array[position]);

If you _really_ want to know the index of the row, take a look at
gtk_tree_path_get_indices() (i've never used that one).

Markus.