void on_page_changed(QListWidgetItem *current, QListWidgetItem *previous);
void on_general_language_changed(const QString &text);
void on_general_theme_changed(int value);
void on_general_style_changed(int value);
void on_general_save_with_setup_changed(int state);
void on_page_changed(QListWidgetItem *current, QListWidgetItem *previous);
void on_general_language_changed(const QString &text);
void on_general_theme_changed(int value);
void on_general_style_changed(int value);
void on_general_save_with_setup_changed(int state);