1996-02-11 23:29:40 +00:00
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.TH curs_touch 3 ""
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1994-10-07 08:58:58 +00:00
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.SH NAME
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1996-02-11 23:29:40 +00:00
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\fBtouchwin\fR, \fBtouchline\fR, \fBuntouchwin\fR,
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\fBwtouchln\fR, \fBis_linetouched\fR,
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\fBis_wintouched\fR - \fBncurses\fR refresh control routines
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1994-10-07 08:58:58 +00:00
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.SH SYNOPSIS
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\fB#include <ncurses.h>\fR
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.br
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\fBint touchwin(WINDOW *win);\fR
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.br
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\fBint touchline(WINDOW *win, int start, int count);\fR
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.br
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\fBint untouchwin(WINDOW *win);\fR
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.br
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\fBint wtouchln(WINDOW *win, int y, int n, int changed);\fR
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.br
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\fBint is_linetouched(WINDOW *win, int line);\fR
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.br
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\fBint is_wintouched(WINDOW *win);\fR
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.br
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.SH DESCRIPTION
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The \fBtouchwin\fR and \fBtouchline\fR routines throw away all
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optimization information about which parts of the window have been
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touched, by pretending that the entire window has been drawn on. This
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is sometimes necessary when using overlapping windows, since a change
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to one window affects the other window, but the records of which lines
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have been changed in the other window do not reflect the change. The
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routine \fBtouchline\fR only pretends that \fIcount\fR lines have been
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changed, beginning with line \fIstart\fR.
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The \fBuntouchwin\fR routine marks all lines in the window as unchanged since
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the last call to \fBwrefresh\fR.
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The \fBwtouchln\fR routine makes \fIn\fR lines in the window, starting
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at line \fIy\fR, look as if they have (\fIchanged\fR\fB=1\fR) or have
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not (\fIchanged\fR\fB=0\fR) been changed since the last call to
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\fBwrefresh\fR.
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The \fBis_linetouched\fR and \fBis_wintouched\fR routines return
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\fBTRUE\fR if the specified line/window was modified since the last
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call to \fBwrefresh\fR; otherwise they return \fBFALSE\fR. In
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addition, \fBis_linetouched\fR returns \fBERR\fR if \fIline\fR is not
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valid for the given window.
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.SH RETURN VALUE
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All routines return the integer \fBERR\fR upon failure and an integer value
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other than \fBERR\fR upon successful completion, unless otherwise noted in the
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preceding routine descriptions.
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.SH NOTES
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Note that all routines except \fBwtouchln\fR may be macros.
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.SH SEE ALSO
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1996-02-11 23:29:40 +00:00
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\fBncurses\fR(3), \fBcurs_refresh\fR(3).
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1994-10-07 08:58:58 +00:00
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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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