Locale. h setlocale

Previous ArticleArticleMedium, the wide character set to print Chinese characters, also need to set locale

There are not many locale. H files, and the source code of the header file is attached.

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 /*  * ** Locale. h-Definitions/declarations for localization routines ** copyright (c) Microsoft Corporation. all rights reserved. ** purpose: * this file defines the structures, values, macros, and functions * used by the localization routines. ** [public] *****  */  # Pragma Once # Ifndef _ inc_locale  # Define _ Inc_locale # Include <Crtdefs. h>/*  * Currently, all ms c compilers for Win32 platforms default to 8 byte * alignment.  */  # Pragma Pack (push, _ crt_packing) # Ifdef _ cplusplus  Extern   "  C  "  {  # Endif  /*  Define NULL pointer Value  */  # Ifndef null # ifdef _ cplusplus # Define Null 0 # Else  # Define NULL (void *) 0) # Endif  # Endif  /*  Locale categories  */  # Define Lc_all 0 # Define Lc_collate 1 # Define Lc_ctype 2 # Define Lc_monetary 3 # Define Lc_numeric 4# Define Lc_time 5 # Define Lc_min lc_all # Define Lc_max lc_time /*  Locale Convention Structure  */  # Ifndef _ lconv_defined  Struct  Lconv {  Char * Decimal_point;  Char * Thousands_sep; Char * Grouping;  Char * Int_curr_symbol;  Char * Currency_symbol;  Char * Mon_decimal_point;  Char * Mon_thousands_sep;  Char * Mon_grouping;  Char *Positive_sign;  Char * Negative_sign;  Char  Int_frac_digits;  Char  Frac_digits;  Char  P_cs_precedes;  Char  P_sep_by_space;  Char  N_cs_precedes;  Char  N_sep_by_space; Char  P_sign_posn;  Char  N_sign_posn; wchar_t * _ W_decimal_point; wchar_t * _ W_thousands_sep; wchar_t * _ W_int_curr_symbol; wchar_t * _ W_currency_symbol; wchar_t * _ W_mon_decimal_point; wchar_t * _ W_mon_thousands_sep; wchar_t * _ W_positive_sign; wchar_t *_ W_negative_sign ;};  # Define _ Lconv_defined # Endif  /*  ANSI: Char lconv Members default is char_max which is compile time dependent. Defining and using _ charmax here causes CRT startup code to initialize lconv members properly  */  # Ifdef _ char_unsigned  Extern   Int  _ Charmax;  Extern _ Inline Int _ Dummy (Void ){ Return  _ Charmax ;}  # Endif  /*  Function prototypes  */  # Ifndef _ config_locale_swt  # Define _ Enable_per_thread_locale 0x1 # Define _ Disable_per_thread_locale 0x2 # Define _ Enable_per_thread_locale_global 0x10 # Define _ Disable_per_thread_locale_global 0x20# Define _ Enable_per_thread_locale_new 0 0x100 # Define _ Disable_per_thread_locale_new 0 0x200 # Define _ Config_locale_swt # Endif  _ Check_return_opt _ cribd  Int _ Cdecl _ configthreadlocale (_ in _ Int  _ Flag); _ check_return_opt _ crqp  Char * _ Cdecl setlocale (_ in _ Int _ Category, _ in_opt_z _ Const   Char * _ Locale); _ check_return_opt _ cribd  Struct Lconv * _ cdecl localeconv ( Void  ); _ Check_return_opt _ cribd _ locale_t _ cdecl _ get_current_locale (  Void  ); _ Check_return_opt _ cribd _ locale_t _ cdecl _ create_locale (_ in _  Int _ Category, _ in_z _ Const   Char * _ Locale); _ cribd  Void  _ Cdecl _ free_locale (_ in_opt _ locale_t _ locale ); /*  Use _ get_current_locale, _ create_locale and _ free_locale, instead of these functions with double leading underscore  */  _ Check_return _ crt_obsolete (_ get_current_locale) _ cribd _ locale_t _ cdecl _ get_current_locale (  Void  ); _ Check_return _ crt_obsolete (_ create_locale) _ cribd _ locale_t _ cdecl _ create_locale (_ in _  Int _ Category, _ in_z _ Const   Char * _ Locale); _ crt_obsolete (_ free_locale) _ cribd  Void _ Cdecl _ free_locale (_ in_opt _ locale_t _ locale); # ifndef _ wlocale_defined  /*  Wide function prototypes, also declared in wchar. h  */  _ Check_return_opt _ cribd wchar_t * _ Cdecl _ wsetlocale (_ in _ Int _ Category, _ in_opt_z _ Const Wchar_t * _ Locale );  # Define _ Wlocale_defined # Endif  # Ifdef _ cplusplus}  # Endif # Pragma Pack (POP) # Endif /* _ Inc_locale */

For more information about how to set locale to print Chinese Characters in wprintf, see:

Http://topic.csdn.net/u/20120331/18/0e806bd0-28d4-4012-9a32-ab99cc16e554.html

(Csdn is annoying in some places)

 

Obtain the current locale

 //  In crtdef. h  Struct  Threadlocaleinfostruct;  Struct  Threadmbcinfostruct; typedef  Struct Threadlocaleinfostruct * Pthreadlocinfo; typedef Struct Threadmbcinfostruct * Pthreadmbcinfo;  Struct  _ Lc_time_data; typedef  Struct  Localeinfo_struct {pthreadlocinfo locinfo; pthreadmbcinfo mbcinfo;} _ locale_tstruct, * _ Locale_t;  // _ Locale_t ret = _ Get_current_locale (); _ free_locale (RET ); 

Typedef Struct  Threadlocaleinfostruct {  Int Refcount; unsigned  Int  Lc_codepage; unsigned  Int  Lc_collate_cp; unsigned  Long Lc_handle [ 6 ]; /*  Lcid  */  Lc_id [  6  ];  Struct  { Char * Locale; wchar_t * Wlocale;  Int * Refcount;  Int * Wrefcount;} lc_category [  6  ];  Int  Lc_clike;  Int  Mb_cur_max;  Int *Lconv_intl_refcount;  Int * Lconv_num_refcount;  Int * Lconv_mon_refcount;  Struct Lconv * Lconv;  Int * Ctype1_refcount; unsigned  Short * Ctype1;  Const Unsigned Short *Pctype;  Const Unsigned Char * Pclmap;  Const Unsigned Char * Pcumap;  Struct _ Lc_time_data * Lc_time_curr;} threadlocinfo; 

 
Threadmbcinfostruct is not found yet.
You do not know how to print the locale represented by the _ locale_t pointer.

 

Setlocale Return Value

Char*Old_locale; old_locale= Setlocale (lc_all,""); // Setlocale (lc_ctype, null); printf ("Old locale was: \ n % s \ n", Old_locale );
 

Set locale

Setlocale (lc_ctype,"CHS");//The followingCodeThe meaning is not clear.Tchar szacp [16]; Wsprintf (szacp, _ T (". % D"), Getacp (); _ tsetlocale (lc_ctype, szacp); setlocale (lc_ctype,"");
 

It is not very useful.

You only need to know how wprintf outputs Chinese characters.