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Multilingual Application - Change Application Language

, 17 Nov 1999
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Multilingual Application - Change Application Language

Introduction

Developing applications supporting multiple languages has always been a drag. With the possibility of including several languages into the rc file of a project, the problem is not entirely solved: The operating system is used as a base and decides what language your application is working with.

If as example, the resources contain English and German, the application will use the English resources on an American or British Windows system, and German on a German or Swiss (German) Windows version. Other language versions of Windows will use the default language (English in most cases).

This behavior is acceptable in most cases, but can cause some headaches: A French speaking person might prefer the German version of your application, but gets by default the English version. Under Windows NT and Windows 2000, there is a simple way of adding the functionality for switching between languages.

Please note: This will only work under NT 3.51 and Windows 2000. There were some problems using NT 4.0 SP3 (and earlier?) reported, but I could not confirm them.

Step 1.

Add the desired languages to your resources.

resources

Step 2.

Enhance your code as follows:

 // Place this code in InitInstance()
 m_lang = GetProfileInt("General","Language",0);
  if (m_lang == 0) {
    // switch language to english
    ::SetThreadLocale(MAKELCID(MAKELANGID(LANG_ENGLISH,
                       SUBLANG_DEFAULT),SORT_DEFAULT));
  }
  else {
    // switch language to german
    ::SetThreadLocale(MAKELCID(MAKELANGID(LANG_GERMAN,
                       SUBLANG_DEFAULT),SORT_DEFAULT));
  }
  //
  //
  // Add a menu or a toolbar button and attach this method 

  void CLanguageApp::OnLanguageTogglelanguage() 
  {
    if (m_lang == 0) {
      WriteProfileInt("General","Language",1);
    }
    else {
      WriteProfileInt("General","Language",0);
    }
    AfxMessageBox(IDS_RESTART); // tell the user to restart the application
  }

//

License

This article has no explicit license attached to it but may contain usage terms in the article text or the download files themselves. If in doubt please contact the author via the discussion board below.

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About the Author

Daniel Zuppinger
Chief Technology Officer
Switzerland Switzerland
Professional IT developer since 1983. First projects with Cobol, then Pascal, Modula2, C and since Visual C++ 1.0 also with C++. Works since 1986 as Consultant, between 1990 and 2008 for Infobrain in Switzerland, currently employed by enValue (also Switzerland).
Current field is the project management and development of software for Bank applications.
Married, two daughters, Hobbies : Paragliding, Orienteering, Mountainbiking, Photography

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GeneralGlobalization using .NET and Oracle 10g Pinmemberashit_barot21-Mar-05 18:58 

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