73 lines
3.7 KiB
Groff
73 lines
3.7 KiB
Groff
.\" $OpenBSD: curs_in_wch.3,v 1.2 2023/10/17 09:52:08 nicm Exp $
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.\"***************************************************************************
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.\" Copyright 2018-2021,2022 Thomas E. Dickey *
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.\" Copyright 2002-2010,2017 Free Software Foundation, Inc. *
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.\" *
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.\" Permission is hereby granted, free of charge, to any person obtaining a *
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.\" copy of this software and associated documentation files (the *
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.\" "Software"), to deal in the Software without restriction, including *
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.\" without limitation the rights to use, copy, modify, merge, publish, *
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.\" distribute, distribute with modifications, sublicense, and/or sell *
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.\" copies of the Software, and to permit persons to whom the Software is *
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.\" furnished to do so, subject to the following conditions: *
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.\" *
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.\" The above copyright notice and this permission notice shall be included *
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.\" in all copies or substantial portions of the Software. *
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.\" *
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.\" THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS *
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.\" OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF *
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.\" MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. *
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.\" IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, *
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.\" DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR *
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.\" OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR *
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.\" THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
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.\" *
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.\" Except as contained in this notice, the name(s) of the above copyright *
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.\" holders shall not be used in advertising or otherwise to promote the *
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.\" sale, use or other dealings in this Software without prior written *
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.\" authorization. *
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.\"***************************************************************************
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.\"
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.\" $Id: curs_in_wch.3,v 1.2 2023/10/17 09:52:08 nicm Exp $
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.TH curs_in_wch 3 2022-02-12 "ncurses 6.4" "Library calls"
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.ie \n(.g .ds `` \(lq
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.el .ds `` ``
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.ie \n(.g .ds '' \(rq
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.el .ds '' ''
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.SH NAME
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\fBin_wch\fP,
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\fBmvin_wch\fP,
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\fBmvwin_wch\fP,
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\fBwin_wch\fP \- extract a complex character and rendition from a window
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.SH SYNOPSIS
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\fB#include <curses.h>\fP
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.sp
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\fBint in_wch(cchar_t *\fIwcval\fB);\fR
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.br
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\fBint win_wch(WINDOW *\fIwin\fB, cchar_t *\fIwcval\fB);\fR
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.sp
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\fBint mvin_wch(int \fIy\fB, int \fIx\fB, cchar_t *\fIwcval\fB);\fR
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.br
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\fBint mvwin_wch(WINDOW *\fIwin\fB, int \fIy\fB, int \fIx\fB, cchar_t *\fIwcval\fB);\fR
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.SH DESCRIPTION
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These functions extract the complex character and rendition from
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the current position in the named window into the \fBcchar_t\fP object
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referenced by wcval.
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.SH RETURN VALUE
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No errors are defined in the XSI Curses standard.
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This implementation checks for null pointers, returns \fBERR\fP in that case.
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Also, the \fImv\fP routines check for error moving the cursor,
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returning \fBERR\fP in that case.
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Otherwise they return \fBOK\fP.
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.PP
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Functions with a \*(``mv\*('' prefix first perform a cursor movement using
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\fBwmove\fP, and return an error if the position is outside the window,
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or if the window pointer is null.
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.SH NOTES
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Note that all of these routines may be macros.
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.SH PORTABILITY
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These functions are described in the XSI Curses standard, Issue 4.
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.SH SEE ALSO
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\fBcurses\fP(3),
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\fBcurs_inch\fP(3).
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