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LoadMUILibrary function

Returns a handle to the language-specific resources associated with a particular language-neutral (LN) file.

Note  To ensure that the DLL is unloaded correctly, your applications should match each call to LoadMUILibrary with a corresponding call to FreeMUILibrary.

Syntax


HINSTANCE LoadMUILibrary(
  _In_  LPCTSTR pszFullModuleName,
  _In_  DWORD dwLangConvention,
  _In_  LANGID LangID
);

Parameters

pszFullModuleName [in]

Pointer to a null-terminated string specifying the name of an LN file.

dwLangConvention [in]

Flags specifying the naming convention on pre-Windows Vista operating systems to name the directories containing the language-specific resource files. The flags are mutually exclusive, and the default is MUI_LANGUAGE_NAME.

ValueMeaning
MUI_LANGUAGE_ID

Interpret the name of the folder containing the language-specific resource files using language identifier format.

MUI_LANGUAGE_NAME

Interpret the name of the folder containing the language-specific resource files using language name format.

 

The following flag is available as an option and can be used in combination with either of the other flags.

ValueMeaning
MUI_LANGUAGE_EXACT

If resources for the identified language are not found in the resource files, check the main module specified by pwszModuleName and return a handle to that module if successful.

 

LangID [in]

Language identifier for the user interface resources on a pre-Windows Vista operating system. The language identifier cannot correspond to the language associated with any of these locale information constants:

Return value

Returns a handle to the appropriate language-specific resource file if successful.

This function returns NULL if it fails. To get extended error information, the application can call GetLastError.

Remarks

This function allows applications developed using the Win32 MUI resource technology to determine correctly the language-specific resource file to load on pre-Windows Vista operating systems. Applications using this function do not specifically have to be built on Windows Vista, but they do have to link statically with the MUILoad library provided in the Microsoft Windows SDK for Windows Vista. This function requires the executable and language-specific resource files to be stored using standard conventions. See Application Deployment for further information about file placement.

The following items influence the loading of satellite binaries by this function.

  • Operating system version running the application that calls the function
  • Flag passed in the dwLangConvention parameter
  • State of the language identifier passed in the LangID parameter

When running on Windows Vista, this function loads the main module without redirection. Only the pszFullModuleName parameter is used, as the resource loader functions perform redirection appropriately when they are called. When running on pre-Windows Vista operating systems, this function takes into account all parameters that the application supplies. It redirects binary loading to the proper satellite binary pair associated with the file represented by pszFullModuleName. This process reconstitutes the path associated with the file to mimic the behavior of Windows Vista that underlies the resource loader functions.

The application uses the dwLangConvention parameter to specify the way the satellite binaries should be probed. If the application sets this parameter to MUI_LANGUAGE_ID, the binaries are probed in folders with hexadecimal string values. (These values do not include the leading 0x, and are 4 characters in length. For example, en-US is represented as "0409" and en as "0009".) If the application sets the parameter to MUI_LANGUAGE_NAME, the function uses Windows Vista resource loading, which uses language name-based folder probes to find a satellite file.

The state of the language identifier in the LangID parameter affects resource probing. If the application sets this parameter to 0, the function uses the predefined fallback logic, dependent on the operating system, to locate the appropriate language-specific resource file. When the application sets LangID to a nonzero value, the probing mechanism only searches the appropriately named folder and its associated neutral equivalent. For more information, see User Interface Language Management.

LoadMUILibrary is built on the function LoadLibraryEx, and similar considerations need to be applied to its usage. In particular, FreeMUILibrary should be called for any handle returned by LoadMUILibrary. Also, LoadMUILibrary should not be called from DllMain. For more information see the Remarks sections of LoadLibraryEx and FreeLibrary.

Requirements

Minimum supported client

Windows 2000 Professional [desktop apps only]

Minimum supported server

Windows 2000 Server [desktop apps only]

Redistributable

Muiload.lib, included in the Windows SDK for Windows 7 which can be run on Windows 2000 Professional, Windows 2000 Server, Windows XP, Windows Server 2003, Windows Vista, Windows Server 2008, and Windows 7.

Header

Muiload.h

Library

Muiload.lib

Unicode and ANSI names

LoadMUILibraryW (Unicode) and LoadMUILibraryA (ANSI)

See also

Multilingual User Interface
Multilingual User Interface Functions
FreeMUILibrary

 

 

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