gdouble ghb_settings_get_double(const GValue *settings, const gchar *key);
gchar* ghb_settings_get_string(const GValue *settings, const gchar *key);
gint ghb_settings_combo_int(const GValue *settings, const gchar *key);
gdouble ghb_settings_get_double(const GValue *settings, const gchar *key);
gchar* ghb_settings_get_string(const GValue *settings, const gchar *key);
gint ghb_settings_combo_int(const GValue *settings, const gchar *key);