man pages section 3: Basic Library Functions

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Updated: July 2014
 
 

getwidth(3C)

Name

getwidth - get codeset information

Synopsis

#include <euc.h>
#include <getwidth.h>

void getwidth(eucwidth_t *ptr);

Description

The getwidth() function reads the character class table for the current locale to get information on the supplementary codesets. getwidth() sets this information into the struct eucwidth_t. This struct is defined in <euc.h> and has the following members:


short int   _eucw1,_eucw2,_eucw3;
short int   _scrw1,_scrw2,_scrw3;
short int   _pcw;
char        _multibyte;

Codeset width values for supplementary codesets 1, 2, and 3 are set in _eucw1, _eucw2, and _eucw3, respectively. Screen width values for supplementary codesets 1, 2, and 3 are set in _scrw1, _scrw2, and _scrw3, respectively.

The width of Extended Unix Code (EUC) Process Code is set in _pcw. The _multibyte entry is set to 1 if multibyte characters are used, and set to 0 if only single-byte characters are used.

Attributes

See attributes(5) for descriptions of the following attributes:

ATTRIBUTE TYPE
ATTRIBUTE VALUE
MT-Level
MT-Safe with exceptions

See Also

euclen(3C), setlocale(3C), attributes(5)

Notes

The getwidth() function can be used safely in a multithreaded application, as long as setlocale(3C) is not being called to change the locale.

The getwidth() function will only work with EUC locales.