ags_preferences_callbacks
void ags_preferences_response_callback (GtkDialog *dialog, gint response_id, gpointer user_data);
GtkDialog *dialog
gint response_id
gpointer user_data
void ags_preferences_notebook_switch_page_callback (GtkNotebook *notebook, gpointer page, guint page_n, AgsPreferences *preferences);
GtkNotebook *notebook
gpointer page
guint page_n
AgsPreferences *preferences