GetFileVersionInfoA function (winver.h)

Retrieves version information for the specified file.

Syntax

BOOL GetFileVersionInfoA(
  [in]  LPCSTR lptstrFilename,
        DWORD  dwHandle,
  [in]  DWORD  dwLen,
  [out] LPVOID lpData
);

Parameters

[in] lptstrFilename

Type: LPCTSTR

The name of the file. If a full path is not specified, the function uses the search sequence specified by the LoadLibrary function.

dwHandle

Type: DWORD

This parameter is ignored.

[in] dwLen

Type: DWORD

The size, in bytes, of the buffer pointed to by the lpData parameter.

Call the GetFileVersionInfoSize function first to determine the size, in bytes, of a file's version information. The dwLen member should be equal to or greater than that value.

If the buffer pointed to by lpData is not large enough, the function truncates the file's version information to the size of the buffer.

[out] lpData

Type: LPVOID

Pointer to a buffer that receives the file-version information.

You can use this value in a subsequent call to the VerQueryValue function to retrieve data from the buffer.

Return value

Type: BOOL

If the function succeeds, the return value is nonzero.

If the function fails, the return value is zero. To get extended error information, call GetLastError.

Remarks

File version info has fixed and non-fixed part. The fixed part contains information like version number. The non-fixed part contains things like strings. In the past GetFileVersionInfo was taking version information from the binary (exe/dll). Currently, it is querying fixed version from language neutral file (exe/dll) and the non-fixed part from mui file, merges them and returns to the user. If the given binary does not have a mui file then behavior is as in previous version.

Call the GetFileVersionInfoSize function before calling the GetFileVersionInfo function. To retrieve information from the file-version information buffer, use the VerQueryValue function.

Requirements

See also

Conceptual

GetFileVersionInfoSize

Reference

VS_VERSIONINFO

VerQueryValue

Version Information