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

C++UINT MsiGetFileVersion(
  __in     LPCTSTR szFilePath,
  __out    LPTSTR lpVersionBuf,
  __inout  DWORD *pcchVersionBuf,
  __out    LPTSTR lpLangBuf,
  __inout  DWORD *pcchLangBuf
);

Parameters

szFilePath [in]

Specifies the path to the file.

lpVersionBuf [out]

Returns the file version.

Set to 0 for language information only.

pcchVersionBuf [in, out]

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.

lpLangBuf [out]

Returns the file language.

Set to 0 (zero) for version information only.

pcchLangBuf [in, out]

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.

 

Requirements

Version	Windows Installer 5.0 on 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, Windows XP, and Windows 2000. See the Windows Installer Run-Time Requirements for information about the minimum Windows service pack that is required by a Windows Installer version.
Header	Msi.h
Library	Msi.lib
DLL	Msi.dll
Unicode and ANSI names	MsiGetFileVersionW (Unicode) and MsiGetFileVersionA (ANSI)

See Also

System Status Functions

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Build date: 8/13/2009