The front an article "Delphi implementation by file attributes to find the file", which give function can use Delphi get attributes of the file,
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//to read the code attribute
The unit PropertySet;

Interface

USES Windows, SysUtils ComObj, ActiveX;

Type
TPropertySet=class
Private
FFileName: WideString;
FActive: Boolean;
FPropertySetStorage: IPropertySetStorage;
FPropertyStorage: IPropertyStorage;
FStorage: IStorage;
FStreamGUID: TGUID;

Procedure SetActive (const Value: Boolean);
Procedure SetFileName (const Value: WideString);
Procedure SetStreamGUID (const Value: TGUID);
Protected
Procedure InternalOpen; The dynamic;
Procedure InternalClose; The dynamic;
Public
The constructor Create;
The destructor Destroy; Override.
Procedure Open;
Procedure Close;
The function GetPropertyByName (APropertyName: WideString) : TPropVariant;
The function GetPropertyByID (APropertyID: Integer) : TPropVariant;

Cable property Active: Boolean read FActive write SetActive;
The property FileName: WideString read FFileName write SetFileName;
The property StreamGUID: TGUID read FStreamGUID write SetStreamGUID;
The end;

Const
FMTID_SummaryInformation: TGUID='{ff9 F29F85E0-4-1068 - AB91-08002 b27b3d9}';
FMTID_DocumentSummaryInformation: TGUID='{e9c D5CDD502-2-101 - b - 9397-08002 b2cf9ae}';
FMTID_UserDefinedProperties: TGUID='{e9c D5CDD505-2-101 - b - 9397-08002 b2cf9ae}';
IID_IPropertySetStorage: TGUID='{0000013} a - 0000-0000 - C000-000000000046';

Implementation
Type
TPropSpecArray=array [0.. 1000] of TPropSpec;
PPropSpecArray=^ TPropSpecArray;
TPropVariantArray=array [0.. 1000] of TPropVariant;
PPropVariantArray=^ TPropVariantArray;

TagSTGOPTIONS=record
UsVersion: ShortInt;
Reserved: Short;
UlSectorSize: LongInt;
PwcsTemplateFile: PWideChar;
The end;

STGOPTIONS=^ tagSTGOPTIONS;

Const
STGFMT_STORAGE=0;
STGFMT_FILE=3;
STGFMT_ANY=4;
STGFMT_DOCFILE=5;

The function StgOpenStorageEx (const pwcsName: POleStr; GrfMode: Longint;
STGFMT: DWORD; GrfAttrs: DWORD; PStgOptions: STGOPTIONS; Reserved2: Pointer;
Riid: PGUID; The out ppObjectOpen: IStorage) : HResult; Stdcall;
External 'ole32. DLL';

The constructor TPropertySet. Create;
The begin
Inherited;
FStreamGUID:=FMTID_SummaryInformation;
The end;

Destructor TPropertySet. Destroy;
The begin
The Close;
The end;

Procedure TPropertySet. Open;
The begin
Active:=True;
The end;

Procedure TPropertySet. Close;
The begin
Active:=False;
The end;

The function TPropertySet. GetPropertyByName (APropertyName: WideString) : TPropVariant;
Var
Ps: PPropSpecArray;
Pv: PPropVariantArray;
The begin
Ps:=nil;
Pv:=nil;
Try
GetMem (ps, sizeof (TPropSpec));
GetMem (pv, sizeof (TPropVariant));
Ps [0]. UlKind:=PRSPEC_LPWSTR;
Ps [0]. LPWSTR:=PWideChar (APropertyName);
OleCheck (FPropertyStorage ReadMultiple (1, @ ps [0], @ pv [0]));
The Result: pv=[0];
The finally
If ps & lt;> Nil then
FreeMem (ps);
If pv & lt;> Nil then
FreeMem (pv);
The end;

The end;

Function TPropertySet. GetPropertyByID (APropertyID: Integer) : TPropVariant;
Var
Ps: PPropSpecArray;
Pv: PPropVariantArray;
The begin
Ps:=nil;
Pv:=nil;
Try
GetMem (ps, sizeof (TPropSpec));
GetMem (pv, sizeof (TPropVariant));
Ps [0]. UlKind:=PRSPEC_PROPID;
Ps [0]. Propid:=APropertyID;
OleCheck (FPropertyStorage ReadMultiple (1, @ ps [0], @ pv [0]));
The Result: pv=[0];
The finally
If ps & lt;> Nil then
FreeMem (ps);
If pv & lt; & gt; Nil then
FreeMem (pv);
The end;
The end;

Procedure TPropertySet. InternalOpen;
The begin
If FFileName="' then
Raise the Exception. Create (' file name must be set! ');
OleCheck (StgOpenStorageEx (PWChar (FFileName), STGM_READ or STGM_SHARE_DENY_WRITE,
STGFMT_ANY, 0, nil nil, @ IID_IPropertySetStorage, FStorage));
FPropertySetStorage:=FStorage as IPropertySetStorage;
OleCheck (FPropertySetStorage. Open (FStreamGUID STGM_READ or STGM_SHARE_EXCLUSIVE,
FPropertyStorage));
The end;

Procedure TPropertySet. InternalClose;
The begin
FPropertyStorage:=nil;
FPropertySetStorage:=nil;
FStorage:=nil;
The end;

Procedure TPropertySet. SetActive (const Value: Boolean);
The begin
Cable if FActive & lt;> The Value then
The begin
If the Value then
InternalOpen
The else
InternalClose;
FActive:=Value;
The end;
The end;

Procedure TPropertySet. SetFileName (const Value: WideString);
The begin
If FFileName & lt;> nullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnull