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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 curses data structures about what the
terminal currently has on its screen. If the data is determined to be
valid, curses 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 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 terminfo
capabilities rmcup and nrrmc exist; also if the terminal
has been written to since the preceding scr-dump call.
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) the contents of a window from (to) a port, use the
getwin and putwin routines.
All routines return the integer #f upon failure and #t
upon success.
Next: Scroll a window, Previous: Refresh windows and lines, Up: The basic curses library [Contents][Index]