Re: signal SIGSEGV, Segmentation fault for GtkTreeView

["DC A" <adc4444 hotmail com>]

Thanks for explaining mvc for me and also for that link. What I've done is:


  model = gtk_list_store_new(3,  GDK_TYPE_PIXBUF, G_TYPE_STRING, 
G_TYPE_INT);

  gtk_list_store_append( GTK_LIST_STORE(model), &iter);
  gtk_list_store_set (model, &iter, 0, pixbuf, 1, "HHHH", 2, 2, -1);


Then:


  GtkTreeViewColumn *aa = gtk_tree_view_column_new();
  layout = GTK_CELL_LAYOUT(aa);
  renderer = gtk_cell_renderer_pixbuf_new();
  gtk_cell_layout_pack_start(layout, renderer, FALSE);


  gtk_tree_view_column_add_attribute(aa, renderer, "pixbuf", 0);

  text_rend = gtk_cell_renderer_text_new();
  gtk_cell_layout_pack_start(layout, text_rend, FALSE);


  gtk_tree_view_column_add_attribute(aa, text_rend, "text", 1);


  GtkTreeViewColumn *bb = gtk_tree_view_column_new();
  GtkCellRenderer *renderer2 = gtk_cell_renderer_text_new();
  gtk_tree_view_column_pack_start (bb, renderer2, FALSE);
  gtk_tree_view_column_add_attribute(bb, renderer2, "text", 2);
  gtk_tree_view_append_column(GTK_TREE_VIEW(tree), aa);
  gtk_tree_view_append_column(GTK_TREE_VIEW(tree), bb);


That's it. Now I got what i wanted.

--DC


> From: "David Necas (Yeti)" <yeti physics muni cz>
> To: DC A <adc4444 hotmail com>
> CC: gtk-list gnome org
> Subject: Re: signal SIGSEGV, Segmentation fault for GtkTreeView
> Date: Sat, 29 Apr 2006 02:08:38 +0200
>
> On Fri, Apr 28, 2006 at 11:02:38PM +0000, DC A wrote:
> > I want to add pixbuf and a string in a single GtkTreeView cell. My code 
> for
> > adding these to list store:
> >
> >
> >   pixbuf = gdk_pixbuf_new_from_file("example.png", &error);
> >   model = gtk_list_store_new(3,  GDK_TYPE_PIXBUF | G_TYPE_STRING,
> > G_TYPE_INT);
>
> This creates a list store with 3 columns of following types:
> 1. an invalid type GDK_TYPE_PIXBUF | G_TYPE_STRING
>    (GTypes are ugly numbers that definitely cannot be bitwise
>    or-ed)
> 2. G_TYPE_INT
> 3. some random junk that happens to lie on stack after the
>    first two arguments
>
> Therefore
>
> > After compilation I get segmentation fault.
>
> GtkTreeView is based on the Model-View-Controller pattern
> thus
>
> ****************************************************************************
> *                                                                          
> *
> *          GtkTreeModel columns and GtkTreeView columns are                
> *
> *                  two unrelated sets of columns.                          
> *
> *                                                                          
> *
> ****************************************************************************
>
> A tree *model* column holds one value of a specific type [in
> each row].  To create a model with a pixbuf, a string, and
> an int in each row, do
>
>    model = gtk_list_store_new(3, GDK_TYPE_PIXBUF, G_TYPE_STRING, 
> G_TYPE_INT);
>
> Now you create a view that consists of some columns and use
> cell data functions or column attributte mapping to relate
> the view columns to the model columns.  This relation can be
> arbitrary -- even none at all in the extreme case.
>
> If you want to pack more cells (i.e., cell renderers) to one
> tree *view* column, do just that (examples can be found in
> many places, one recent probably not very didactic is here:
> http://mail.gnome.org/archives/gtk-app-devel-list/2006-April/msg00008.html).
>
> Please read the tree view tutorial.
>
> Yeti
>
>
> --
> That's enough.

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