delphi：如何设置（写）扩展文件属性？

要使用IPropertyStorage：WriteMultiple方法写摘要信息。 请参阅MSDN示例WriteRead 。 不是德尔福，但很容易转换。

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; //Indicates that the file must not be a compound file. //This element is only valid when using the StgCreateStorageEx //or StgOpenStorageEx functions to access the NTFS file system //implementation of the IPropertySetStorage interface. //Therefore, these functions return an error if the riid //parameter does not specify the IPropertySetStorage interface, //or if the specified file is not located on an NTFS file system //volume. STGFMT_ANY = 4; //Indicates that the system will determine the file type and //use the appropriate structured storage or property set //implementation. //This value cannot be used with the StgCreateStorageEx function. // Summary Information 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; // Document Summary Information 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http://www.delphi-central.com/tutorials/File_Summary_Info.aspx 。 另外这个： http : //www.swissdelphicenter.ch/torry/showcode.php? id= 1614告诉你如何操作[IPropertyStorage]

部分答案：设置属性的Delphi代码可以在这里找到。 或者如果您有最新的JCL库 – 请在jclNtfs.pas上使用TJclFilePropertySet警告：请注意，此代码适用于xls文件，但对Windows 7 Pro / Enterprise或2008中的txt / cvs和jpg文件似乎不起作用（64位）。 看来M $已经改变了这些操作系统中的属性的工作方式： “你不能添加或改变某些类型的文件的文件属性，例如，你不能添加任何属性到TXT或RTF文件” 。 可悲的是，回到XP模式不是一个选项。