Re: Inserting paramenter into a ROW/NODE in a TreeView

[muppet <scott asofyet org>]

On Jan 13, 2005, at 5:34 PM, Raul Dias wrote:

> - the CellRendering object which is always the same in its column (no
>   matter the row).

This is by design.  The TreeViewColumn uses that renderer to draw each  
row in the column,


> The problem is that the $iter is not the same TreeIter object I used  
> when inserting data to the model.  My bet is that it is created on the  
> fly with the info needed as used.

This, also, is by design.  Iters are temporary objects that are only  
valid until the model changes.


> That said, I need something (some gtk object) that will never change  
> for a row/node so I can attach information on it.

This is a TreeRowReference: see  
http://developer.gnome.org/doc/API/2.0/gtk/GtkTreeModel.html#gtk-tree- 
row-reference-new

But this won't really help you with extra row data; see below.

> So, how do I keep private data with each row/node?

Add another column to your model, but don't display it in the view.

  use constant THING_1_COLUMN => 0;
  use constant THING_2_COLUMN => 1;
  use constant PRIVATE_1_COLUMN => 2;
  use constant PRIVATE_2_COLUMN => 3;

  # create and fill the model with four columns of data
  my $model = Gtk2::ListStore->new ('Glib::String', # THING_1_COLUMN
                                    'Glib::Int', # THING_2_COLUMN
                                    'Glib::Int', # PRIVATE_1_COLUMN
                                    'Glib::Scalar); # PRIVATE_2_COLUMN

  # only show two of those columns, and in reverse order, at that.
  my $view = Gtk2::TreeView->new ($model);
  $view->insert_column_with_attributes
                          (0, "Thing 2", Gtk2::CellRendererText->new,
                           text => THING_2_COLUMN);
  $view->insert_column_with_attributes
                          (1, "Thing 1", Gtk2::CellRendererText->new,
                           text => THING_1_COLUMN);


--
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