ImmGetIMEFileNameW function (immdev.h)

Retrieves the file name of the IME associated with the specified input locale.


UINT ImmGetIMEFileNameW(
                  HKL    unnamedParam1,
  [out, optional] LPWSTR lpszFileName,
  [in]            UINT   uBufLen



[out, optional] lpszFileName

Pointer to a buffer in which the function retrieves the file name. This parameter contains NULL when uBufLen is set to NULL.

[in] uBufLen

Size, in bytes, of the output buffer. The application specifies 0 if the function is to return the buffer size needed to receive the file name, not including the terminating null character. For Unicode, uBufLen specifies the size in Unicode characters, not including the terminating null character.

Return value

Returns the number of bytes in the file name copied to the output buffer. If the application sets uBufLen to 0, the function returns the size of the buffer required for the file name. In either case, the terminating null character is not included.

For Unicode, the function returns the number of Unicode characters copied into the output buffer, not including the Unicode terminating null character.


In the registry, the operating system stores the file name as the "IME name value" in the registry key HKEY_LOCAL_MACHINE\System\CurrentControlSet\Control\Keyboard Layouts\HKL.


The immdev.h header defines ImmGetIMEFileName as an alias which automatically selects the ANSI or Unicode version of this function based on the definition of the UNICODE preprocessor constant. Mixing usage of the encoding-neutral alias with code that not encoding-neutral can lead to mismatches that result in compilation or runtime errors. For more information, see Conventions for Function Prototypes.


Minimum supported client Windows XP [desktop apps only],East Asian language support installed.
Minimum supported server Windows Server 2003 [desktop apps only]
Target Platform Windows
Header immdev.h (include Immdev.h, Windows.h)
Library Imm32.lib
DLL Imm32.dll

See also

Input Method Manager

Input Method Manager Functions