Re: which column cell is changed when "row-changed" is emitted

[Tristan Van Berkom <tvb gnome org>]

On Sat, May 4, 2013 at 12:44 PM, yu wu <vanii warem gmail com> wrote:
> For the signal "row-changed" of GtkTreeModel, how can I know which column
> cell is changed. For example, I defined 10 renderers by
> `gtk_cell_renderer_text_new' which means 10 columns. When column 1 and
> column 3 in a row are changed, the signal "row-changed" will be emitted
> twice. Then how can I know who emitted the change -- column 1 or column 3?

You don't need to know which cell renderer is effected by a given row change,
in fact, even if you did, you wouldn't be informed of what data in the row has
changed, only that the row itself has changed.

The row change will cause the GtkTreeView/GtkIconView to render the row
again (if it's visible), at which time the renderer will render the new data
(or your custom function will set the cell attributes, if you used
gtk_cell_layout_set_cell_data_func()).

Cheers,
    -Tristan