function GetFileSummaryInfo(const FileName: WideString): String;
const
FmtID_SummaryInformation: TGUID = '{F29F85E0-4FF9-1068-AB91-08002B27B3D9}';
FMTID_DocSummaryInformation : TGUID = '{D5CDD502-2E9C-101B-9397-08002B2CF9AE}';
FMTID_UserDefinedProperties : TGUID = '{D5CDD505-2E9C-101B-9397-08002B2CF9AE}';
IID_IPropertySetStorage : TGUID = '{0000013A-0000-0000-C000-000000000046}';
const
STGFMT_FILE = 3;
STGFMT_ANY = 4;
PID_TITLE = 2;
PID_SUBJECT = 3;
PID_AUTHOR = 4;
PID_KEYWORDS = 5;
PID_COMMENTS = 6;
PID_TEMPLATE = 7;
PID_LASTAUTHOR = 8;
PID_REVNUMBER = 9;
PID_EDITTIME = 10;
PID_LASTPRINTED = 11;
PID_CREATE_DTM = 12;
PID_LASTSAVE_DTM = 13;
PID_PAGECOUNT = 14;
PID_WORDCOUNT = 15;
PID_CHARCOUNT = 16;
PID_THUMBNAIL = 17;
PID_APPNAME = 18;
PID_SECURITY = 19;
PID_CATEGORY = 2;
PID_PRESFORMAT = 3;
PID_BYTECOUNT = 4;
PID_LINECOUNT = 5;
PID_PARCOUNT = 6;
PID_SLIDECOUNT = 7;
PID_NOTECOUNT = 8;
PID_HIDDENCOUNT = 9;
PID_MMCLIPCOUNT = 10;
PID_SCALE = 11;
PID_HEADINGPAIR = 12;
PID_DOCPARTS = 13;
PID_MANAGER = 14;
PID_COMPANY = 15;
PID_LINKSDIRTY = 16;
PID_CHARCOUNT2 = 17;
var
I: Integer;
PropSetStg: IPropertySetStorage;
PropSpec: array of TPropSpec;
PropStg: IPropertyStorage;
PropVariant: array of TPropVariant;
Rslt: HResult;
S: String;
Stg: IStorage;
PropEnum: IEnumSTATPROPSTG;
HR : HResult;
PropStat: STATPROPSTG;
k : integer;
function PropertyPIDToCaption(const ePID: Cardinal): string;
begin
case ePID of
PID_TITLE:
Result := 'Title';
PID_SUBJECT:
Result := 'Subject';
PID_AUTHOR:
Result := 'Author';
PID_KEYWORDS:
Result := 'Keywords';
PID_COMMENTS:
Result := 'Comments';
PID_TEMPLATE:
Result := 'Template';
PID_LASTAUTHOR:
Result := 'Last Saved By';
PID_REVNUMBER:
Result := 'Revision Number';
PID_EDITTIME:
Result := 'Total Editing Time';
PID_LASTPRINTED:
Result := 'Last Printed';
PID_CREATE_DTM:
Result := 'Create Time/Date';
PID_LASTSAVE_DTM:
Result := 'Last Saved Time/Date';
PID_PAGECOUNT:
Result := 'Number of Pages';
PID_WORDCOUNT:
Result := 'Number of Words';
PID_CHARCOUNT:
Result := 'Number of Characters';
PID_THUMBNAIL:
Result := 'Thumbnail';
PID_APPNAME:
Result := 'Creating Application';
PID_SECURITY:
Result := 'Security';
else
Result := '$' + IntToHex(ePID, 8);
end
end;
begin
Result := '';
try
OleCheck(StgOpenStorageEx(PWideChar(FileName),
STGM_READ or STGM_SHARE_DENY_WRITE,
STGFMT_FILE,
0, nil, nil, @IID_IPropertySetStorage, stg));
PropSetStg := Stg as IPropertySetStorage;
OleCheck(PropSetStg.Open(FmtID_SummaryInformation,
STGM_READ or STGM_SHARE_EXCLUSIVE, PropStg));
OleCheck(PropStg.Enum(PropEnum));
I := 0;
hr := PropEnum.Next(1, PropStat, nil);
while hr = S_OK do
begin
inc(I);
SetLength(PropSpec,I);
PropSpec[i-1].ulKind := PRSPEC_PROPID;
PropSpec[i-1].propid := PropStat.propid;
hr := PropEnum.Next(1, PropStat, nil);
end;
SetLength(PropVariant,i);
Rslt := PropStg.ReadMultiple(i, @PropSpec[0], @PropVariant[0]);
if Rslt = S_FALSE then Exit;
for k := 0 to i -1 do
begin
S := '';
if PropVariant[k].vt = VT_LPSTR then
if Assigned(PropVariant[k].pszVal) then
S := PropVariant[k].pszVal;
S := Format(PropertyPIDToCaption(PropSpec[k].Propid)+ ' %s',[s]);
if S <> '' then Result := Result + S + #13;
end;
finally
end;
更多信息请参阅http://www.delphi-central.com/tutorials/File_Summary_Info.aspx。此外,http://www.swissdelphicenter.ch/torry/showcode.php?id=1614可以展示如何操作[IPropertyStorage]