mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-24 11:29:10 +00:00
116 lines
4.7 KiB
Groff
116 lines
4.7 KiB
Groff
.TH curs_kernel 3X ""
|
|
.SH NAME
|
|
\fBcurs_kernel\fR: \fBdef_prog_mode\fR, \fBdef_shell_mode\fR,
|
|
\fBreset_prog_mode\fR, \fBreset_shell_mode\fR, \fBresetty\fR,
|
|
\fBsavetty\fR, \fBgetsyx\fR, \fBsetsyx\fR, \fBripoffline\fR,
|
|
\fBcurs_set\fR, \fBnapms\fR - low-level \fBncurses\fR routines
|
|
.SH SYNOPSIS
|
|
\fB#include <ncurses.h>\fR
|
|
|
|
\fBint def_prog_mode(void);\fR
|
|
.br
|
|
\fBint def_shell_mode(void);\fR
|
|
.br
|
|
\fBint reset_prog_mode(void);\fR
|
|
.br
|
|
\fBint reset_shell_mode(void);\fR
|
|
.br
|
|
\fBint resetty(void);\fR
|
|
.br
|
|
\fBint savetty(void);\fR
|
|
.br
|
|
\fBint getsyx(int y, int x);\fR
|
|
.br
|
|
\fBint setsyx(int y, int x);\fR
|
|
.br
|
|
\fBint ripoffline(int line, int (*init)(WINDOW *, int));\fR
|
|
.br
|
|
\fBint curs_set(int visibility);\fR
|
|
.br
|
|
\fBint napms(int ms);\fR
|
|
.br
|
|
.SH DESCRIPTION
|
|
The following routines give low-level access to various \fBncurses\fR
|
|
capabilities. Theses routines typically are used inside library
|
|
routines.
|
|
|
|
The \fBdef_prog_mode\fR and \fBdef_shell_mode\fR routines save the
|
|
current terminal modes as the "program" (in \fBncurses\fR) or "shell"
|
|
(not in \fBncurses\fR) state for use by the \fBreset_prog_mode\fR and
|
|
\fBreset_shell_mode\fR routines. This is done automatically by
|
|
\fBinitscr\fR.
|
|
|
|
The \fBreset_prog_mode\fR and \fBreset_shell_mode\fR routines restore
|
|
the terminal to "program" (in \fBncurses\fR) or "shell" (out of
|
|
\fBncurses\fR) state. These are done automatically by \fBendwin\fR
|
|
and, after an \fBendwin\fR, by \fBdoupdate\fR, so they normally are
|
|
not called.
|
|
|
|
The \fBresetty\fR and \fBsavetty\fR routines save and restore the
|
|
state of the terminal modes. \fBsavetty\fR saves the current state in
|
|
a buffer and \fBresetty\fR restores the state to what it was at the
|
|
last call to \fBsavetty\fR.
|
|
|
|
With the \fBgetsyx\fR routine, the current coordinates of the virtual
|
|
screen cursor are returned in \fIy\fR and \fIx\fR. If \fBleaveok\fR
|
|
is currently \fBTRUE\fR, then \fB-1\fR,\fB-1\fR is returned. If lines
|
|
have been removed from the top of the screen, using \fBripoffline\fR,
|
|
\fIy\fR and \fIx\fR include these lines; therefore, \fIy\fR and
|
|
\fIx\fR should be used only as arguments for \fBsetsyx\fR.
|
|
|
|
With the \fBsetsyx\fR routine, the virtual screen cursor is set to
|
|
\fIy\fR, \fIx\fR. If \fIy\fR and \fIx\fR are both \fB-1\fR, then
|
|
\fBleaveok\fR is set. The two routines \fBgetsyx\fR and \fBsetsyx\fR
|
|
are designed to be used by a library routine, which manipulates
|
|
\fBncurses\fR windows but does not want to change the current position
|
|
of the program's cursor. The library routine would call \fBgetsyx\fR
|
|
at the beginning, do its manipulation of its own windows, do a
|
|
\fBwnoutrefresh\fR on its windows, call \fBsetsyx\fR, and then call
|
|
\fBdoupdate\fR.
|
|
|
|
The \fBripoffline\fR routine provides access to the same facility that
|
|
\fBslk_init\fR [see curs_slk(3X)] uses to reduce the size of the
|
|
screen. \fBripoffline\fR must be called before \fBinitscr\fR or
|
|
\fBnewterm\fR is called. If \fIline\fR is positive, a line is removed
|
|
from the top of \fBstdscr\fR; if \fIline\fR is negative, a line is
|
|
removed from the bottom. When this is done inside \fBinitscr\fR, the
|
|
routine \fBinit\fR (supplied by the user) is called with two
|
|
arguments: a window pointer to the one-line window that has been
|
|
allocated and an integer with the number of columns in the window.
|
|
Inside this initialization routine, the integer variables \fBLINES\fR
|
|
and \fBCOLS\fR (defined in \fB<ncurses.h>\fR) are not guaranteed to be
|
|
accurate and \fBwrefresh\fR or \fBdoupdate\fR must not be called. It
|
|
is allowable to call \fBwnoutrefresh\fR during the initialization
|
|
routine.
|
|
|
|
\fBripoffline\fR can be called up to five times before calling \fBinitscr\fR or
|
|
\fBnewterm\fR.
|
|
|
|
The \fBcurs_set\fR routine sets the cursor state is set to invisible,
|
|
normal, or very visible for \fBvisibility\fR equal to \fB0\fR,
|
|
\fB1\fR, or \fB2\fR respectively. If the terminal supports the
|
|
\fIvisibility\fR requested, the previous \fIcursor\fR state is
|
|
returned; otherwise, \fBERR\fR is returned.
|
|
|
|
The \fBnapms\fR routine is used to sleep for \fIms\fR milliseconds.
|
|
.SH RETURN VALUE
|
|
Except for \fBcurs_set\fR, these routines always return \fBOK\fR.
|
|
\fBcurs_set\fR returns the previous cursor state, or \fBERR\fR if the
|
|
requested \fIvisibility\fR is not supported.
|
|
.SH NOTES
|
|
Note that \fBgetsyx\fR is a macro, so \fB&\fR is not necessary before
|
|
the variables \fIy\fR and \fIx\fR.
|
|
|
|
The SVr4 man pages warn that the return value of \fBcurs_set\fR "is currently
|
|
incorrect". This implementation gets it right, but it may be unwise to count
|
|
on the correctness of the return value anywhere else.
|
|
.SH SEE ALSO
|
|
\fBncurses\fR(3X), \fBcurs_initscr\fR(3X), \fBcurs_outopts\fR(3X), \fBcurs_refresh\fR(3X),
|
|
\fBcurs_scr_dump\fR(3X), \fBcurs_slk\fR(3X)
|
|
.\"#
|
|
.\"# The following sets edit modes for GNU EMACS
|
|
.\"# Local Variables:
|
|
.\"# mode:nroff
|
|
.\"# fill-column:79
|
|
.\"# End:
|