void create_new_window(GtkWidget* widget, gpointer user_data, gboolean clone);
void insert_menu_toolbar_item(MainWindow * mw, gpointer user_data);
void create_new_window(GtkWidget* widget, gpointer user_data, gboolean clone);
void insert_menu_toolbar_item(MainWindow * mw, gpointer user_data);
void insert_viewer_wrap(GtkWidget *menuitem, gpointer user_data);
gboolean execute_events_requests(Tab *tab);
void insert_viewer_wrap(GtkWidget *menuitem, gpointer user_data);
gboolean execute_events_requests(Tab *tab);