Re: how to tell if to GtkTreeIter's point to the same row, or not?

[Eduardo M KALINOWSKI <ekalin gmail com>]

Gregory Hosler wrote:
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> Hi,
>
> I have an application, where, to facilitate looks deep inside callbacks, I store the Iter
> of a row as and when I gtk_list_store_append() it. This allows me to gtk_list_store_set()
> using the saved iter, and it works quite well.
>
> Now, I have a case, where I want to popup a popup-menu when the user clicks on a row.
> So I attached a "button-press-event" to the gtk_tree_view. In my callback I do a
> gtk_tree_view_get_path_at_pos(), and then I map the path to a row/iter using
> gtk_tree_model_get_iter(). This appears to work fine, except that the iter I get returned
> is not identical to the iter that was earlier saved when row was first
> gtk_list_store_append()'ed (the stamp, and user_data are the same, the other fields differ).
>
> I am using the saved iter to locate a private data structure relating to the row.
>
> I suppose that I could g_object_set_data() a pointer to my private data structure insize
> the iter, but that seems otherwise unnecessary. (My list private data structures have the
> saved iter in them, so was just comparing the saved iter against the one from the
> model_get_iter() returned iter.)
>
> Is there a way to compare iter's, or am i better to store a g_object_set_data() inside the
> iter to point to my private data structure ?
>   

You cannot compare iter's directly (they're temporary anyway), but you 
can convert iter's to GtkTreePath's and compare them with 
gtk_tree_path_compare(). (Or something similar.)

--
Inspired by a true story.

Eduardo M KALINOWSKI
ekalin gmail com
http://move.to/hpkb