curs_scr_dump(3)

NAME
scr_dump, scr_restore, scr_init, scr_set - read (write) a ncurses screen from (to) a file

SYNOPSIS
#include <ncurses.h> int scr_dump(char *filename);
int scr_restore(char *filename);
int scr_init(char *filename);
int scr_set(char *filename);

DESCRIPTION
The scr_dump routine dumps the current contents of the virtual screen to the file filename. The scr_restore routine sets the virtual screen to the contents of filename, which must have been written using scr_dump. The next call to doupdate restores the screen to the way it looked in the dump file. The scr_init routine reads in the contents of filename and uses them to initialize the ncurses data structures about what the terminal currently has on its screen. If the data is determined to be valid, ncurses bases its next update of the screen on this information rather than clearing the screen and starting from scratch. scr_init is used after initscr or a system [see system(BA_LIB)] call to share the screen with another process which has done a scr_dump after its endwin call. The data is declared invalid if the time-stamp of the tty is old or the terminfo capabilities rmcup and nrrmc exist. The scr_set routine is a combination of scr_restore and scr_init. It tells the program that the information in filename is what is currently on the screen, and also what the program wants on the screen. This can be thought of as a screen inheritance function. To read (write) a window from (to) a file, use the getwin and putwin routines [see curs_util(3)].

RETURN VALUE
All routines return the integer ERR upon failure and OK upon success.

NOTES
Note that scr_init, scr_set, and scr_restore may be macros. The time-stamp and rmcup/nrrmc checks are not implemented in ncurses(3).

SEE ALSO
ncurses(3), curs_initscr(3), curs_refresh(3), curs_util(3), system(3)