Some more progress: now the grid uses the GtkListStore as its model. We are a little bit closer to the MVC architecture.

Wanna see more screenshots? Well this time nothing is really spectacular but I can tell you is a important step to separate the data from the widget. Ok, the screenshot is here.

Now it's time to paste some code. As an add-on, the GtkGrid API will be pretty similar to the GtkTreeView one, so programmers will not need to learn a lot of different things. Let's see an example of how to use it:

  /* Create the model and populate it */
  for (i=0; i<n_columns; i++)
    types[i] = G_TYPE_STRING;

   model = gtk_list_store_newv (n_columns, types);

   for (y=0; y<n_rows; y++)
    {
      GtkTreeIter iter;
      gtk_list_store_append (model, &iter);
      for (x=0; x<n_columns; x++)
	{
	  GValue value = { 0, };
	  g_value_init (&value, G_TYPE_STRING);
	  snprintf (buffer, 99, "cell %d %d", y, x);
	  g_value_set_string (&value, buffer);
	  gtk_list_store_set_value (model, &iter, x, &value);
	}
    }

   /* Create the grid with the model */
  grid = GTK_GRID (gtk_grid_new_with_model (model));

   for (i=0; i<n_columns; i++) 
    {
      renderer = gtk_cell_renderer_text_new ();
      column = gtk_grid_column_new_with_attributes ("testing",
						    renderer,
						    "text",
						    i,
						    NULL);
      gtk_grid_append_column(grid, column);
    }