> I would like to get the version of dll's on a system before my program
> starts.
type
TFVISubBlock = (sbCompanyName, sbFileDescription, sbFileVersion, sbInternalName, sbLegalCopyright,
sbLegalTradeMarks, sbOriginalFilename, sbProductName, sbProductVersion, sbComments);
{----------------------------------------------------------------------------------
Description : retrieves selected version information from the specified
version-information resource. True on success
Parameters :
const FullPath : string; the exe or dll full path
SubBlock : TFVISubBlock; the requested sub block information ie sbCompanyName
var sValue : string the returned string value
Error checking : YES
Notes :
1. 32bit only ( It does not work with 16-bit Windows file images )
2. TFVISubBlock is declared as
TFVISubBlock = (sbCompanyName, sbFileDescription, sbFileVersion, sbInternalName,
sbLegalCopyright, sbLegalTradeMarks, sbOriginalFilename,
sbProductName, sbProductVersion, sbComments);
Tested : in Delphi 4 only
Author : Theo Bebekis
-----------------------------------------------------------------------------------}
function Get_FileVersionInfo(const FullPath: string; SubBlock: TFVISubBlock; var sValue: string):boolean;
const
arStringNames : array[sbCompanyName..sbComments] of string =
('CompanyName', 'FileDescription', 'FileVersion', 'InternalName', 'LegalCopyright',
'LegalTradeMarks', 'OriginalFilename', 'ProductName', 'ProductVersion', 'Comments');
var
Dummy : DWORD;
iLen : DWORD;
pData : PChar;
pVersion : Pointer;
pdwLang : PDWORD;
sLangID : string;
sCharsetID : string;
pValue : PChar;
begin
Result := False;
{ get the size of the size in bytes of the file's version information}
iLen := GetFileVersionInfoSize(PChar(FullPath), Dummy);
if iLen = 0 then Exit;
{ get the information }
pData := StrAlloc(iLen + 1);
if not GetFileVersionInfo(PChar(FullPath), { pointer to filename string }
0, { ignored }
iLen, { size of buffer }
pData) { pointer to buffer to receive file-version info }
then Exit;
{ get the national ID.
retrieve a pointer to an array of language and
character-set identifiers. Use these identifiers
to create the name of a language-specific
structure in the version-information resource}
if not VerQueryValue(pData, { address of buffer for version resource (in)}
'\VarFileInfo\Translation', { address of value to retrieve (in) }
pVersion, { address of buffer for version pointer (out)}
iLen ) { address of version-value length buffer (out)}
then Exit;
{ analyze it }
pdwLang := pVersion;
sLangID := IntToHex(pdwLang^, 8);
sCharsetID := Copy(sLangID, 1, 4);
sLangID := Copy(sLangID, 5, 4);
{ get the info for the requested sub block }
if not VerQueryValue(pData,
PChar('\StringFileInfo\' + sLangID + sCharsetID + '\' + arStringNames[SubBlock]),
pVersion,
iLen)
then Exit;
{ copy it to sValue }
pValue := StrAlloc(iLen + 1);
StrLCopy(pValue, pVersion, iLen);
sValue := String(pValue);
StrDispose(pValue);
Result := True;
end;
Theo
-----------------------------------
Theo Bebekis
Thessaloniki, Greece
bebekis@otenet.gr
-----------------------------------
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