Re: SimpleList and CellRenderer tweaking

[muppet <scott asofyet org>]

On Wednesday, May 12, 2004, at 06:52 PM, Jörn Reder wrote:

>     my $bold_cr = Gtk2::CellRendererText->new;
>     $bold_cr->set ( weight => 700 );
>
>     $slist->get_column($_)->add_attribute($bold_cr, weight_set => 5)
>             for (0..3);

you're adding the attribute on a new cell renderer that you're not 
using; however, the cell renderer you pass to add_attributes must be 
one that you've already packed into the column.  also, you have an 
off-by-one on the loop if you just want the first three.  i think you 
want instead something like this:

  for (0..2) {
      my $col = $slist->get_column ($_);
      my $cell = ($col->get_cell_renderers)[0];  #consider only the 
first
      $col->add_attribute ($cell, weight_set => 5);
  }


> But I get only an assertion warning for the ->add_attribute(...) line:
>
>   Gtk-CRITICAL **: file gtktreeviewcolumn.c: line 1359
>     (gtk_tree_view_column_add_attribute): assertion `info != NULL'

GtkTreeViewColumn stores a list of structures that contain the 
attributes you add for each cell renderer, keyed on the cell renderers; 
since you hadn't added $bold_cr to the column, it didn't know anything 
about it and complained.



--
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most of it is gibberish.
  -- Elysse, to me, of Zella.