Chapter 13. Examples of I18N

96

This enables TWM to properly receive the internationalized window text names from X

clients.

  Usage of

XGetWMIconName()

and

XmbTextPropertyToTextList()

for inter client com 

munication of window icon names. This enables TWM to properly receive the internation 

alized window icon names from X clients.

  8bit cleanization of the configuration file parser. This enables usage of internationalized

texts for menus and so on.

The following will present these items.

13.1.2 Locale Setting   A Routine Work

At first, I added a small part to call

setlocale()

at the beginning of

main()

function.

loc = setlocale(LC_ALL, "");

if (!loc || !strcmp(loc, "C") || !strcmp(loc, "POSIX") ||

!XSupportsLocale()) {

use_fontset = False;

} else {

use_fontset = True;

}

loc

is

char *

 type auto (local) variable.

use_fontset

is

Bool

 type global variable, for which

I wrote a declaration in

twm.h

.

extern Bool use_fontset;

I also added inclusion of

X11/Xlocale.h

header file. By including of this header file, locale

feature of X11 will be used when compiled in OS without locale features. Otherwise, X11/Xlocale

will use locale features of the OS. Thus, you can include

X11/Xlocale.h

regardless of whether

the OS support locale.

Checking of NULL,  C , and  POSIX  locales will enable TWM to work 8bit through when the

user does not configure locale properly. Under  C  or  POSIX  locale, or without proper con 

figuration of locale,

XFontSet

 related functions will work under 7bit ASCII encoding and these

functions will regard all 8bit characters as invalid. In such cases, my patch won't use

XFontSet

related functions by checking the value of

use_fontset

. Checking of

XSupportLocale()

is

needed for cases when the OS support the locale while X doesn't support the locale.