void set_screen_checked (wxTreeListItem item, bool checked);
void setup_cinema_checked_state (wxTreeListItem screen);
int compare (std::string const& utf8_a, std::string const& utf8_b);
void set_screen_checked (wxTreeListItem item, bool checked);
void setup_cinema_checked_state (wxTreeListItem screen);
int compare (std::string const& utf8_a, std::string const& utf8_b);