Signal

GtkComboBox::format-entry-text

since: 3.4

Declaration

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

Description [src]

For combo boxes that are created with an entry (See GtkComboBox:has-entry).

A signal which allows you to change how the text displayed in a combo box’s entry is displayed.

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 gchar*
format_entry_text_callback (GtkComboBox *combo,
                            const gchar *path,
                            gpointer     user_data)
{
  GtkTreeIter iter;
  GtkTreeModel model;
  gdouble      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,
                      -1);

  return g_strdup_printf ("%g", value);
}

Default handler:

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

Available since: 3.4

Parameters

path

Type: 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

Type: 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.