Получение информации о версии файла

Автор: Gua

{ **** UBPFD *********** by delphibase.endimus.com ****
>> Получение информации о версии файла

Зависимости:
Автор:       Gua, fbsdd@ukr.net, ICQ:141585495, Simferopol
Copyright:
Дата:        05 мая 2002 г.
***************************************************** }

{$B-,R-}

function GetFileVersion(const FileName: string): string;
type
  PDWORD = ^DWORD;
  PLangAndCodePage = ^TLangAndCodePage;
  TLangAndCodePage = packed record
    wLanguage: WORD;
    wCodePage: WORD;
  end;
  PLangAndCodePageArray = ^TLangAndCodePageArray;
  TLangAndCodePageArray = array[0..0] of TLangAndCodePage;
var
  loc_InfoBufSize: DWORD;
  loc_InfoBuf: PChar;
  loc_VerBufSize: DWORD;
  loc_VerBuf: PChar;
  cbTranslate: DWORD;
  lpTranslate: PDWORD;
  i: DWORD;
begin
  Result := '';
  if (Length(FileName) = 0) or (not Fileexists(FileName)) then
    Exit;
  loc_InfoBufSize := GetFileVersionInfoSize(PChar(FileName), loc_InfoBufSize);
  if loc_InfoBufSize > 0 then
  begin
    loc_VerBuf := nil;
    loc_InfoBuf := AllocMem(loc_InfoBufSize);
    try
      if not GetFileVersionInfo(PChar(FileName), 0, loc_InfoBufSize, loc_InfoBuf)
        then
        exit;
      if not VerQueryValue(loc_InfoBuf, '\\VarFileInfo\\Translation',
        Pointer(lpTranslate), DWORD(cbTranslate)) then
        exit;
      for i := 0 to (cbTranslate div SizeOf(TLangAndCodePage)) - 1 do
      begin
        if VerQueryValue(
          loc_InfoBuf,
          PChar(Format(
          'StringFileInfo\0%x0%x\FileVersion', [
          PLangAndCodePageArray(lpTranslate)[i].wLanguage,
            PLangAndCodePageArray(lpTranslate)[i].wCodePage])),
            Pointer(loc_VerBuf),
          DWORD(loc_VerBufSize)
          ) then
        begin
          Result := loc_VerBuf;
          Break;
        end;
      end;
    finally
      FreeMem(loc_InfoBuf, loc_InfoBufSize);
    end;
  end;
end;