freebsd-nq/man/curs_getcchar.3x

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.\" $Id: curs_getcchar.3x,v 1.10 2006/12/24 16:00:02 tom Exp $
.TH curs_getcchar 3X ""
.SH NAME
\fBgetcchar\fP,
\fBsetcchar\fP \- Get a wide character string and rendition from a \fBcchar_t\fP or set a \fBcchar_t\fP from a wide-character string
.SH SYNOPSIS
\fB#include <curses.h>\fP
.sp
\fBint getcchar(\fP
.br
.B "        const cchar_t *\fIwcval\fP,"
.br
.B "        wchar_t *\fIwch\fP,"
.br
.B "        attr_t *\fIattrs\fP,"
.br
.B "        short *\fIcolor_pair\fP,"
.br
.B "        void *\fIopts\fP );"
.sp
.B "int setcchar("
.br
.B "        cchar_t *\fIwcval\fP,"
.br
.B "        const wchar_t *\fIwch\fP,"
.br
.B "        const attr_t \fIattrs\fP,"
.br
.B "        short \fIcolor_pair\fP,"
.br
.B "        void *\fIopts\fP );"
.SH DESCRIPTION
.PP
The \fBgetcchar\fP function gets a wide-character string
and rendition from a \fBcchar_t\fP argument.
When \fIwch\fP is not a null pointer,
the \fBgetcchar\fP function does the following:
.TP 5
-
Extracts information from a \fBcchar_t\fP value \fIwcval\fP
.TP 5
-
Stores the character attributes in the location pointed to by \fIattrs\fP
.TP 5
-
Stores the color-pair in the location pointed to by \fIcolor_pair\fP
.TP 5
-
Stores the wide-character string,
characters referenced by \fIwcval\fP, into the array pointed to by \fIwch\fP.
.PP
When
\fIwch\fP
is a null pointer, the
\fBgetcchar\fP
function does the following:
.TP 5
-
Obtains the number of wide characters pointed to by \fIwcval\fP
.TP 5
-
Does not change the data referenced by
\fIattrs\fP
or
\fIcolor_pair\fP
.PP
The \fBsetcchar\fP function initializes the location pointed to by \fIwcval\fP
by using:
.TP 5
-
The character attributes in
\fIattrs\fP
.TP 5
-
The color pair in
\fIcolor_pair\fP
.TP 5
-
The wide-character string pointed to by \fIwch\fP.
The string must be L'\\0' terminated,
contain at most one character with strictly positive width,
which must be the first,
and contain no characters of negative width.
.SH NOTES
.PP
The \fIopts\fP argument is reserved for future use.
Currently, an application must provide a null pointer as \fIopts\fP.
.PP
The \fIwcval\fP argument may be a value generated by a call to
\fBsetcchar\fP or by a function that has a \fBcchar_t\fP output argument.
If \fIwcval\fP is constructed by any other means, the effect is unspecified.
.SH RETURN VALUES
.PP
When \fIwch\fP is a null pointer,
\fBgetcchar\fP returns the number of wide characters referenced by
\fIwcval\fP.
.PP
When \fIwch\fP is not a null pointer,
\fBgetcchar\fP returns \fBOK\fP upon successful completion,
and \fBERR\fP otherwise.
.PP
Upon successful completion, \fBsetcchar\fP returns \fBOK\fP.
Otherwise, it returns \fBERR\fP.
.SH SEE ALSO
.PP
Functions:
\fBcurs_attr\fR(3X),
\fBcurs_color\fR(3X),
\fBcurses\fR(3X),
\fBwcwidth\fR(3).
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