format_entry_text (
  GtkComboBox* self,
  gchar* path,
  gpointer user_data

Description [src]

Emitted to allow changing how the text in a combo box’s entry is displayed.

See GtkComboBox:has-entry.

Connect a signal handler which returns an allocated string representing path. That string will then be used to set the text in the combo box’s entry. The default signal handler uses the text from the GtkComboBox:entry-text-column model column.

Here’s an example signal handler which fetches data from the model and displays it in the entry.

static char *
format_entry_text_callback (GtkComboBox *combo,
                            const char *path,
                            gpointer     user_data)
  GtkTreeIter iter;
  GtkTreeModel model;
  double       value;

  model = gtk_combo_box_get_model (combo);

  gtk_tree_model_get_iter_from_string (model, &iter, path);
  gtk_tree_model_get (model, &iter,
                      THE_DOUBLE_VALUE_COLUMN, &value,

  return g_strdup_printf ("%g", value);
Default handler:

The default handler is called after the handlers added via g_signal_connect().


path gchar*

The GtkTreePath string from the combo box’s current model to format text for.

 The data is owned by the caller of the function.
 The value is a NUL terminated UTF-8 string.

Return value

Returns: gchar*

A newly allocated string representing path for the current GtkComboBox model.

 The caller of the function takes ownership of the data, and is responsible for freeing it.
 The value is a NUL terminated UTF-8 string.