wctype.md

description	title	ms.date	api_name	api_location	api_type	topic_type	f1_keywords	helpviewer_keywords
Learn more about: wctype	wctype	1/14/2021	wctype	msvcrt.dll msvcr80.dll msvcr90.dll msvcr100.dll msvcr100_clr0400.dll msvcr110.dll msvcr110_clr0400.dll msvcr120.dll msvcr120_clr0400.dll ucrtbase.dll api-ms-win-crt-string-l1-1-0.dll	DLLExport	apiref	WCTYPE/wctype wctype	wctype function wide characters

wctype

Determines a classification rule for wide-character codes.

Syntax

wctype_t wctype(
   const char * property
);

Parameters

property
Property string.

Return value

If the LC_CTYPE category of the current locale doesn't define a classification rule whose name matches the property string property, the function returns zero. Otherwise, it returns a nonzero value suitable for use as the second argument to a subsequent call to towctrans.

Remarks

The function determines a classification rule for wide-character codes. The following pairs of calls have the same behavior in all locales (but an implementation can define more classification rules even in the "C" locale):

Function	Same as
iswalnum(c)	iswctype(c, wctype( "alnum" ))
iswalpha(c)	iswctype(c, wctype( "alpha" ))
iswcntrl(c)	iswctype(c, wctype( "cntrl" ))
iswdigit(c)	iswctype(c, wctype( "digit" ))
iswgraph(c)	iswctype(c, wctype( "graph" ))
iswlower(c)	iswctype(c, wctype( "lower" ))
iswprint(c)	iswctype(c, wctype( "print" ))
iswpunct(c)	iswctype(c, wctype( "punct" ))
iswspace(c)	iswctype(c, wctype( "space" ))
iswupper(c)	iswctype(c, wctype( "upper" ))
iswxdigit(c)	iswctype(c, wctype( "xdigit" ))

Requirements

Routine	Required header
wctype	<wctype.h>

For more compatibility information, see Compatibility.

See also

Data conversion
setlocale, _wsetlocale