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MsiGetFileVersionW function (msi.h)

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The MsiGetFileVersion returns the version string and language string in the format that the installer expects to find them in the database. If you want only version information, set lpLangBuf and pcchLangBuf to 0 (zero). If you just want language information, set lpVersionBuf and pcchVersionBuf to 0 (zero).

Syntax

UINT MsiGetFileVersionW(
  [in]      LPCWSTR szFilePath,
  [out]     LPWSTR  lpVersionBuf,
  [in, out] LPDWORD pcchVersionBuf,
  [out]     LPWSTR  lpLangBuf,
  [in, out] LPDWORD pcchLangBuf
);

Parameters

[in] szFilePath

Specifies the path to the file.

[out] lpVersionBuf

Returns the file version.

Set to 0 for language information only.

[in, out] pcchVersionBuf

In and out buffer count as the number of TCHAR.

Set to 0 (zero) for language information only. On input, this is the full size of the buffer, including a space for a terminating null character. If the buffer passed in is too small, the count returned does not include the terminating null character.

[out] lpLangBuf

Returns the file language.

Set to 0 (zero) for version information only.

[in, out] pcchLangBuf

In and out buffer count as the number of TCHAR.

Set to 0 (zero) for version information only. On input, this is the full size of the buffer, including a space for a terminating null character. If the buffer passed in is too small, the count returned does not include the terminating null character.

Return value

Value Meaning
ERROR_SUCCESS
 Successful completion.
ERROR_FILE_NOT_FOUND
 File does not exist.
ERROR_ACCESS_DENIED
 File cannot be opened to get version information.
ERROR_FILE_INVALID
 File does not contain version information.
ERROR_INVALID_DATA
 The version information is invalid.
E_FAIL
 Unexpected error.

Remarks

Note

The msi.h header defines MsiGetFileVersion as an alias that 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 is not encoding-neutral can lead to mismatches that result in compilation or runtime errors. For more information, see Conventions for Function Prototypes.

Requirements

Requirement Value
Minimum supported client Windows Installer 5.0 on Windows Server 2012, Windows 8, Windows Server 2008 R2 or Windows 7. Windows Installer 4.0 or Windows Installer 4.5 on Windows Server 2008 or Windows Vista. Windows Installer on Windows Server 2003 or Windows XP. See the Windows Installer Run-Time Requirements for information about the minimum Windows service pack that is required by a Windows Installer version.
Target Platform Windows
Header msi.h
Library Msi.lib
DLL Msi.dll

See also

System Status Functions