diff options
Diffstat (limited to 'contrib/ncurses/man/curs_kernel.3x')
| -rw-r--r-- | contrib/ncurses/man/curs_kernel.3x | 67 |
1 files changed, 47 insertions, 20 deletions
diff --git a/contrib/ncurses/man/curs_kernel.3x b/contrib/ncurses/man/curs_kernel.3x index caeb5bb..9403973 100644 --- a/contrib/ncurses/man/curs_kernel.3x +++ b/contrib/ncurses/man/curs_kernel.3x @@ -1,5 +1,5 @@ .\"*************************************************************************** -.\" Copyright (c) 1998 Free Software Foundation, Inc. * +.\" Copyright (c) 1998-2001,2005 Free Software Foundation, Inc. * .\" * .\" Permission is hereby granted, free of charge, to any person obtaining a * .\" copy of this software and associated documentation files (the * @@ -26,16 +26,27 @@ .\" authorization. * .\"*************************************************************************** .\" -.\" $Id: curs_kernel.3x,v 1.13 2001/12/08 18:01:25 tom Exp $ +.\" $Id: curs_kernel.3x,v 1.15 2005/05/15 16:18:13 tom Exp $ .TH curs_kernel 3X "" +.na +.hy 0 .SH NAME -\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 \fBcurses\fR routines +\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 \fBcurses\fR routines +.ad +.hy .SH SYNOPSIS \fB#include <curses.h>\fR - +.sp \fBint def_prog_mode(void);\fR .br \fBint def_shell_mode(void);\fR @@ -62,32 +73,32 @@ The following routines give low-level access to various \fBcurses\fR capabilities. Theses routines typically are used inside library routines. - +.PP The \fBdef_prog_mode\fR and \fBdef_shell_mode\fR routines save the current terminal modes as the "program" (in \fBcurses\fR) or "shell" (not in \fBcurses\fR) state for use by the \fBreset_prog_mode\fR and \fBreset_shell_mode\fR routines. This is done automatically by \fBinitscr\fR. There is one such save area for each screen context allocated by \fBnewterm()\fR. - +.PP The \fBreset_prog_mode\fR and \fBreset_shell_mode\fR routines restore the terminal to "program" (in \fBcurses\fR) or "shell" (out of \fBcurses\fR) state. These are done automatically by \fBendwin\fR and, after an \fBendwin\fR, by \fBdoupdate\fR, so they normally are not called. - +.PP 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. - +.PP The \fBgetsyx\fR routine returns the current coordinates of the virtual screen cursor 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. - +.PP The \fBsetsyx\fR routine sets the virtual screen cursor 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 @@ -97,7 +108,7 @@ 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. - +.PP The \fBripoffline\fR routine provides access to the same facility that \fBslk_init\fR [see \fBcurs_slk\fR(3X)] uses to reduce the size of the screen. \fBripoffline\fR must be called before \fBinitscr\fR or @@ -112,29 +123,45 @@ and \fBCOLS\fR (defined in \fB<curses.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. - +.PP \fBripoffline\fR can be called up to five times before calling \fBinitscr\fR or \fBnewterm\fR. - +.PP 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. - +.PP 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 +.PP +\fBcurs_set\fR +returns the previous cursor state, or \fBERR\fR if the requested \fIvisibility\fR is not supported. +.PP +X/Open defines no error conditions. +In this implementation +.RS +.TP 5 +\fBdef_prog_mode\fR, \fBdef_shell_mode\fR, \fBreset_prog_mode\fR, \fBreset_shell_mode\fR +return an error +if the terminal was not initialized, or +if the I/O call to obtain the terminal settings fails. +.TP 5 +\fBripoffline\fP +returns an error if the maximum number of ripped-off lines +exceeds the maximum (NRIPS = 5). +.RE .SH NOTES Note that \fBgetsyx\fR is a macro, so \fB&\fR is not necessary before the variables \fIy\fR and \fIx\fR. - +.PP Older 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. - +.PP Both ncurses and SVr4 will call \fBcurs_set\fR in \fBendwin\fR if \fBcurs_set\fR has been called to make the cursor other than normal, i.e., either @@ -144,7 +171,7 @@ restore that. .SH PORTABILITY The functions \fBsetsyx\fR and \fBgetsyx\fR are not described in the XSI Curses standard, Issue 4. All other functions are as described in XSI Curses. - +.PP The SVr4 documentation describes \fBsetsyx\fR and \fBgetsyx\fR as having return type int. This is misleading, as they are macros with no documented semantics for the return value. |
