DelphiHelp.org

procedure GetFileVersion(FileName: string; var Major1, Major2,
  Minor1, Minor2: Integer);
var
  Info: Pointer;
  InfoSize: DWORD;
  FileInfo: PVSFixedFileInfo;
  FileInfoSize: DWORD;
  Tmp: DWORD;
begin
  InfoSize := GetFileVersionInfoSize(PChar(FileName), Tmp);

  if InfoSize = 0 then
    //Файл не содержит информации о версии
  else
  begin
    GetMem(Info, InfoSize);
    try
      GetFileVersionInfo(PChar(FileName), 0, InfoSize, Info);
      VerQueryValue(Info, '\', Pointer(FileInfo), FileInfoSize);
      Major1 := FileInfo.dwFileVersionMS shr 16;
      Major2 := FileInfo.dwFileVersionMS and $FFFF;
      Minor1 := FileInfo.dwFileVersionLS shr 16;
      Minor2 := FileInfo.dwFileVersionLS and $FFFF;
    finally
      FreeMem(Info, FileInfoSize);
    end;
  end;
end;