static void gtk_combo_box_list_setup (GtkComboBox *combo_box);
static void gtk_combo_box_list_destroy (GtkComboBox *combo_box);
+static void gtk_combo_box_list_remove_grabs (GtkComboBox *combo_box);
+
static gboolean gtk_combo_box_list_button_released (GtkWidget *widget,
GdkEventButton *event,
gpointer data);