NLS: 名前ベースの API サンプル

[アーティクル]
06/13/2023

このトピックで説明するサンプルアプリケーションでは、NLS の "ロケール名" 関数の一部を示します。可能な場合は、アプリケーションでロケール識別子の代わりにロケール名を使用する必要があります。

サンプルアプリケーションでは 、EnumSystemLocalesEx を使用して、オペレーティングシステム上のすべてのロケール ( 補足ロケールを含む) を列挙します。

アプリケーションでサポートされている列挙コールバック関数は、パラメーターとして 1 つ以上のロケール名を受け取ることができます。 EnumSystemLocalesEx は 、これらの名前をオプションの lparam 値のコールバック関数に渡します。ユーザーがコマンドラインでロケールを入力した場合、コールバック関数は、すべてのロケールを表示するのではなく、指定されたロケールのみを表示します。

表示されるロケールごとに、コールバック関数は、それがシステムロケールであるかどうかを報告し、ロケールの既定の形式を使用して現在の日付を出力し、Windows Vista で導入されたロケール情報定数 ( たとえば、LOCALE_SSCRIPTS) 内のロケールのすべてのデータを表示します。

サンプルアプリケーションは、入力ロケールを解析して、 IsValidLocaleName を使用して有効かどうかを確認します。

このサンプルでは、次の関数を示します。

// THIS CODE AND INFORMATION IS PROVIDED "AS IS" WITHOUT WARRANTY OF 
// ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO 
// THE IMPLIED WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR A 
// PARTICULAR PURPOSE. 
// 
// Copyright (c) Microsoft Corporation. All rights reserved. 
// 
// ======================================================================== 
//   CONSOLE APPLICATION : NamedNlsFunctions Project Overview 

#include "stdafx.h"
#include "windows.h"
#include "stdio.h"

// All of the LCTYPES new to Windows Vista 
LCTYPE NewTypes[] =
{
    LOCALE_SNAME,
    LOCALE_SDURATION,
    LOCALE_SKEYBOARDSTOINSTALL,
    LOCALE_SSHORTESTDAYNAME1,
    LOCALE_SSHORTESTDAYNAME2,
    LOCALE_SSHORTESTDAYNAME3,
    LOCALE_SSHORTESTDAYNAME4,
    LOCALE_SSHORTESTDAYNAME5,
    LOCALE_SSHORTESTDAYNAME6,
    LOCALE_SSHORTESTDAYNAME7,
    LOCALE_SISO639LANGNAME2,
    LOCALE_SISO3166CTRYNAME2,
    LOCALE_SNAN,
    LOCALE_SPOSINFINITY,
    LOCALE_SNEGINFINITY,
    LOCALE_SSCRIPTS
};

// Strings so we can print out the LCTYPES 
LPCWSTR NewTypeNames[] =
{
    L"LOCALE_SNAME",
    L"LOCALE_SDURATION",
    L"LOCALE_SKEYBOARDSTOINSTALL",
    L"LOCALE_SSHORTESTDAYNAME1",
    L"LOCALE_SSHORTESTDAYNAME2",
    L"LOCALE_SSHORTESTDAYNAME3",
    L"LOCALE_SSHORTESTDAYNAME4",
    L"LOCALE_SSHORTESTDAYNAME5",
    L"LOCALE_SSHORTESTDAYNAME6",
    L"LOCALE_SSHORTESTDAYNAME7",
    L"LOCALE_SISO639LANGNAME2",
    L"LOCALE_SISO3166CTRYNAME2",
    L"LOCALE_SNAN",
    L"LOCALE_SPOSINFINITY",
    L"LOCALE_SNEGINFINITY",
    L"LOCALE_SSCRIPTS"
};

// Callback for EnumSystemLocalesEx() 
#define BUFFER_SIZE 512
BOOL CALLBACK MyFuncLocaleEx(LPWSTR pStr, DWORD dwFlags, LPARAM lparam)
{
    UNREFERENCED_PARAMETER(dwFlags);
    WCHAR** argv = (WCHAR**)lparam;
    WCHAR wcBuffer[BUFFER_SIZE];
    int iResult;
    int i;

    // If specific locales were specified on the command line check for a match 
    if (*argv && argv[1])
    {
        // Check each argument to see if our locale matches 
        for (i = 1; argv[i] != 0; i++)
        {
            // Using invariant, check if the name matches the input.  CompareStringEx 
            // is probably overkill, but we want to demonstrate that named API. 
            if (CompareStringEx(LOCALE_NAME_INVARIANT,
                                LINGUISTIC_IGNORECASE,
                                argv[i],
                                -1,
                                pStr,
                                -1,
                                NULL,
                                NULL,
                                0) == CSTR_EQUAL)
            {
                break;
            }
        }

        // If no match then stop and don't output this one 
        if (argv[i] == 0)
            return TRUE;
    }

    // Print out the locale name we found 
    iResult = GetLocaleInfoEx(pStr, LOCALE_SENGLANGUAGE, wcBuffer, BUFFER_SIZE);

    // If it succeeds, print it out 
    if (iResult > 0)
        wprintf(L"Locale %s (%s)\n", pStr, wcBuffer);
    else
        wprintf(L"Locale %s had error %d\n", pStr, GetLastError());
 
    // If this is the system locale, let us know.  CompareStringEx 
    // is probably overkill, but we want to demonstrate that named API. 
    iResult = GetSystemDefaultLocaleName(wcBuffer, BUFFER_SIZE);
    if (iResult > 0)
    {
        if (CompareStringEx(LOCALE_NAME_INVARIANT,
                            LINGUISTIC_IGNORECASE,
                            wcBuffer,
                            -1,
                            pStr,
                            -1,
                            NULL,
                            NULL,
                            0) == CSTR_EQUAL)
        {
            wprintf(L"Locale %s is the system locale!\n", wcBuffer);
        }
    }
    else
    {
        wprintf(L"Error %d getting system locale\n", GetLastError());
    }
    
    // Get its LCID 
    LCID lcid = LocaleNameToLCID(pStr, NULL);
    if (lcid != 0)
        wprintf(L"LCID for %s is %x\n", pStr, lcid);
    else
        wprintf(L"Error %d getting LCID\n", GetLastError());

    // Get today's date 
    iResult = GetDateFormatEx(pStr, DATE_LONGDATE, NULL, NULL, wcBuffer, BUFFER_SIZE, NULL);

    if (iResult > 0)
        wprintf(L"Date: %s\n", wcBuffer);
    else
        wprintf(L"Error %d getting today's date for %s\n", GetLastError(), pStr);

    // Loop through all of the new LCTYPES and do GetLocaleInfoEx on them 
    for (i = 0; i < sizeof(NewTypes) / sizeof(NewTypes[0]); i++)
    {
        // Get this LCTYPE result for this locale 
        iResult = GetLocaleInfoEx(pStr, NewTypes[i], wcBuffer, BUFFER_SIZE);

        // If it succeeds, print it out 
        if (iResult > 0)
        {
            wprintf(L"  %s has value %s\n", NewTypeNames[i], wcBuffer);
        }
        else
        {
            wprintf(L"  %s had error %d\n", NewTypeNames[i], GetLastError());
        }
    } 

    return (TRUE);
}

int __cdecl wmain(int argc, wchar_t* argv[])
{
    UNREFERENCED_PARAMETER(argc);
    // Enumerate all the locales and report on them 
    EnumSystemLocalesEx( MyFuncLocaleEx, LOCALE_ALL, (LPARAM)argv, NULL);

    // See which of the input locales are valid (if any) 
    if (*argv && argv[1])
    {
        // Check each argument to see if our locale matches 
        for (int i = 1; argv[i] != 0; i++)
        {
            // See if this is a valid locale name 
            if (!IsValidLocaleName(argv[i]))
            {
                wprintf(L"%s is not a valid locale name\n", argv[i]);
            }
        }
    }    
}

/*
The following is a portion of the results produced by this code example.

Locale en-US (English)
Locale en-US is the system locale!
LCID for en-US is 409
Date: Wednesday, February 03, 2010
  LOCALE_SNAME has value en-US
  LOCALE_SDURATION has value h:mm:ss
  LOCALE_SKEYBOARDSTOINSTALL has value 0409:00000409
  LOCALE_SSHORTESTDAYNAME1 has value Mo
  LOCALE_SSHORTESTDAYNAME2 has value Tu
  LOCALE_SSHORTESTDAYNAME3 has value We
  LOCALE_SSHORTESTDAYNAME4 has value Th
  LOCALE_SSHORTESTDAYNAME5 has value Fr
  LOCALE_SSHORTESTDAYNAME6 has value Sa
  LOCALE_SSHORTESTDAYNAME7 has value Su
  LOCALE_SISO639LANGNAME2 has value eng
  LOCALE_SISO3166CTRYNAME2 has value USA
  LOCALE_SNAN has value NaN
  LOCALE_SPOSINFINITY has value Infinity
  LOCALE_SNEGINFINITY has value -Infinity
  LOCALE_SSCRIPTS has value Latn;
Locale fr-FR (French)
LCID for fr-FR is 40c
Date: mercredi 3 f vrier 2010
  LOCALE_SNAME has value fr-FR
  LOCALE_SDURATION has value HH:mm:ss
  LOCALE_SKEYBOARDSTOINSTALL has value 040c:0000040c;0409:00000409
  LOCALE_SSHORTESTDAYNAME1 has value lu
  LOCALE_SSHORTESTDAYNAME2 has value ma
  LOCALE_SSHORTESTDAYNAME3 has value me
  LOCALE_SSHORTESTDAYNAME4 has value je
  LOCALE_SSHORTESTDAYNAME5 has value ve
  LOCALE_SSHORTESTDAYNAME6 has value sa
  LOCALE_SSHORTESTDAYNAME7 has value di
  LOCALE_SISO639LANGNAME2 has value fra
  LOCALE_SISO3166CTRYNAME2 has value FRA
  LOCALE_SNAN has value Non Num rique
  LOCALE_SPOSINFINITY has value +Infini
  LOCALE_SNEGINFINITY has value -Infini
  LOCALE_SSCRIPTS has value Latn;
Locale es-ES (Spanish)
LCID for es-ES is c0a
Date: mi rcoles, 03 de febrero de 2010
  LOCALE_SNAME has value es-ES
  LOCALE_SDURATION has value H:mm:ss
  LOCALE_SKEYBOARDSTOINSTALL has value 0c0a:0000040a;0409:00000409
  LOCALE_SSHORTESTDAYNAME1 has value lu
  LOCALE_SSHORTESTDAYNAME2 has value ma
  LOCALE_SSHORTESTDAYNAME3 has value mi
  LOCALE_SSHORTESTDAYNAME4 has value ju
  LOCALE_SSHORTESTDAYNAME5 has value vi
  LOCALE_SSHORTESTDAYNAME6 has value s 
  LOCALE_SSHORTESTDAYNAME7 has value do
  LOCALE_SISO639LANGNAME2 has value spa
  LOCALE_SISO3166CTRYNAME2 has value ESP
  LOCALE_SNAN has value NeuN
  LOCALE_SPOSINFINITY has value Infinito
  LOCALE_SNEGINFINITY has value -Infinito
  LOCALE_SSCRIPTS has value Latn;

*/

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NLS: 名前ベースの API サンプル

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