57 lines
2.2 KiB
Groff
57 lines
2.2 KiB
Groff
.TH curs_scr_dump 3X ""
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.SH NAME
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\fBcurs_scr_dump\fR: \fBscr_dump\fR, \fBscr_restore\fR,
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\fBscr_init\fR, \fBscr_set\fR - read (write) a \fBncurses\fR screen
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from (to) a file
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.SH SYNOPSIS
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\fB#include <ncurses.h>\fR
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\fBint scr_dump(char *filename);\fR
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.br
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\fBint scr_restore(char *filename);\fR
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.br
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\fBint scr_init(char *filename);\fR
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.br
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\fBint scr_set(char *filename);\fR
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.br
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.SH DESCRIPTION
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The \fBscr_dump\fR routine dumps the current contents of the virtual screen
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to the file \fIfilename\fR.
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With the \fBscr_restore\fR routine, the virtual screen is set to the contents
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of \fIfilename\fR, which must have been written using \fBscr_dump\fR. The next
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call to \fBdoupdate\fR restores the screen to the way it looked in the dump
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file.
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With the \fBscr_init\fR routine, the contents of \fIfilename\fR are read in and
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used to initialize the \fBncurses\fR data structures about what the terminal
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currently has on its screen. If the data is determined to be valid,
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\fBncurses\fR bases its next update of the screen on this information rather
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than clearing the screen and starting from scratch. \fBscr_init\fR is used
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after \fBinitscr\fR or a \fBsystem\fR [see \fBsystem\fR(BA_LIB)] call to share
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the screen with another process which has done a \fBscr_dump\fR after its
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\fBendwin\fR call. The data is declared invalid if the time-stamp of the tty
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is old or the terminfo capabilities \fBrmcup\fR and \fBnrrmc\fR exist.
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The \fBscr_set\fR routine is a combination of \fBscr_restore\fR and
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\fBscr_init\fR. It tells the program that the information in \fIfilename\fR is
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what is currently on the screen, and also what the program wants on the screen.
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This can be thought of as a screen inheritance function.
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To read (write) a window from (to) a file, use the \fBgetwin\fR and
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\fBputwin\fR routines [see \fBcurs_util\fR(3X)].
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.SH RETURN VALUE
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All routines return the integer \fBERR\fR upon failure and \fBOK\fR
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upon success.
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.SH NOTES
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Note that \fBscr_init\fR, \fBscr_set\fR, and \fBscr_restore\fR may be macros.
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.SH SEE ALSO
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\fBncurses\fR(3X), \fBcurs_initscr\fR(3X), \fBcurs_refresh\fR(3X),
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\fBcurs_util\fR(3X), \fBsystem\fR(3S)
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.\"#
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.\"# The following sets edit modes for GNU EMACS
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.\"# Local Variables:
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.\"# mode:nroff
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.\"# fill-column:79
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.\"# End:
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