Re: gtkcombobox with self internal code to the options

[John Williams <asb1231 gmail com>]

Other question, how can I set the active option? gtk_combo_box_set_active?

2010/6/16 John Williams <asb1231 gmail com>:
> Yes Tadej, you understand perfectly.
>
> Thank you for the example!
>
> 2010/6/15 Tadej Borovšak <tadeboro gmail com>:
>> Hello.
>>
>> If I understand you correctly, you want to store name and ID of your
>> field inside combo box and retrieve it when needed. If this is true,
>> have a look at this snippet of code that demonstrates how to do this:
>>
>> -------
>> #include <gtk/gtk.h>
>>
>> enum
>> {
>>  COL_NAME,
>>  COL_ID,
>>  NO_COLS
>> };
>>
>> static void
>> cb_changed (GtkComboBox *combo)
>> {
>>  GtkTreeIter   iter;
>>  GtkTreeModel *model;
>>  gint          id;
>>  gchar        *name;
>>
>>  gtk_combo_box_get_active_iter (combo, &iter);
>>  model = gtk_combo_box_get_model (combo);
>>  gtk_tree_model_get (model, &iter, COL_NAME, &name, COL_ID, &id, -1);
>>
>>  g_print ("Active selection: %s (id: %d)\n", name, id);
>>  g_free (name);
>> }
>>
>> int
>> main (int    argc,
>>      char **argv)
>> {
>>  GtkWidget       *window,
>>                  *combo;
>>  GtkCellRenderer *cell;
>>  GtkListStore    *store;
>>  gint             i;
>>
>>  gtk_init (&argc, &argv);
>>
>>  window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
>>  g_signal_connect (window, "destroy", gtk_main_quit, NULL);
>>
>>  store = gtk_list_store_new (NO_COLS, G_TYPE_STRING, G_TYPE_INT);
>>  for (i = 0; i < 10; i++)
>>    {
>>      GtkTreeIter iter;
>>      gchar       name[] = "Item  ";
>>
>>      name[5] = '0' + i;
>>      gtk_list_store_append (store, &iter);
>>      gtk_list_store_set (store, &iter, COL_NAME, name,
>>                                        COL_ID, g_random_int (),
>>                                        -1);
>>    }
>>
>>  combo = gtk_combo_box_new_with_model (GTK_TREE_MODEL (store));
>>  g_signal_connect (combo, "changed", G_CALLBACK (cb_changed), NULL);
>>  gtk_container_add (GTK_CONTAINER (window), combo);
>>
>>  cell = gtk_cell_renderer_text_new ();
>>  gtk_cell_layout_pack_start (GTK_CELL_LAYOUT (combo), cell, TRUE);
>>  gtk_cell_layout_add_attribute (GTK_CELL_LAYOUT (combo), cell,
>>                                 "text", COL_NAME);
>>
>>  gtk_widget_show_all (window);
>>
>>  gtk_main();
>>
>>  return 0;
>> }
>> ----------
>>
>> Tadej
>>
>> --
>> Tadej Borovšak
>> tadeboro.blogspot.com
>> tadeboro gmail com
>> tadej borovsak gmail com
>>
>