如何以编程方式设置文件标签

使用Windows资源pipe理器查看文件时,可以select设置“标签”,“类别”或其他属性。 对于JPEG,一组不同的属性(包括“标签”)是选项。 我想能够以编程方式设置这些。

如何使用Delphi(我有Delphi 2010 Pro)以编程方式设置文件标签和其他文件属性

JPEG文件中的标签存储为IPTC关键字。 有几个图书馆可以阅读和写这些,如果这就是你要求的。

资源管理器显示不同文件类型的不同列,因为它知道这些文件类型支持这些额外的列。 您可以定义shell插件来支持您自己的文件类型的自定义列信息。 MSDN提供了一个概述。

我认为你想要获取文件的所有属性,可以在浏览器中按鼠标右键。

你可以使用这个单位:

unit u_fsummary; interface uses Windows, ComObj, ActiveX, Variants, Sysutils; procedure SetFileSummaryInfo(const FileName : WideString; Author, Title, Subject, Keywords, Comments : WideString); function GetFileSummaryInfo(const FileName: WideString): String; function IsNTFS(AFileName : string) : boolean; implementation 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}'; 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; function IsNTFS(AFileName : string) : boolean; var fso, drv : OleVariant; begin IsNTFS := False; fso := CreateOleObject('Scripting.FileSystemObject'); drv := fso.GetDrive(fso.GetDriveName(AFileName)); if drv.FileSystem = 'NTFS' then IsNTFS := True; end; function StgOpenStorageEx ( const pwcsName : POleStr; //Pointer to the path of the //file containing storage object grfMode : LongInt; //Specifies the access mode for the object stgfmt : DWORD; //Specifies the storage file format grfAttrs : DWORD; //Reserved; must be zero pStgOptions : Pointer; //Address of STGOPTIONS pointer reserved2 : Pointer; //Reserved; must be zero riid : PGUID; //Specifies the GUID of the interface pointer out stgOpen : //Address of an interface pointer IStorage ) : HResult; stdcall; external 'ole32.dll'; function GetFileSummaryInfo(const FileName: WideString): String; 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; end; procedure SetFileSummaryInfo(const FileName : WideString; Author, Title, Subject, Keywords, Comments : WideString); var PropSetStg: IPropertySetStorage; PropSpec: array of TPropSpec; PropStg: IPropertyStorage; PropVariant: array of TPropVariant; Stg: IStorage; begin OleCheck(StgOpenStorageEx(PWideChar(FileName), STGM_SHARE_EXCLUSIVE or STGM_READWRITE, STGFMT_ANY, 0, nil, nil, @IID_IPropertySetStorage, stg)); PropSetStg := Stg as IPropertySetStorage; OleCheck(PropSetStg.Create(FmtID_SummaryInformation, FmtID_SummaryInformation, PROPSETFLAG_DEFAULT,STGM_CREATE or STGM_READWRITE or STGM_SHARE_EXCLUSIVE, PropStg)); Setlength(PropSpec,6); PropSpec[0].ulKind := PRSPEC_PROPID; PropSpec[0].propid := PID_AUTHOR; PropSpec[1].ulKind := PRSPEC_PROPID; PropSpec[1].propid := PID_TITLE; PropSpec[2].ulKind := PRSPEC_PROPID; PropSpec[2].propid := PID_SUBJECT; PropSpec[3].ulKind := PRSPEC_PROPID; PropSpec[3].propid := PID_KEYWORDS; PropSpec[4].ulKind := PRSPEC_PROPID; PropSpec[4].propid := PID_COMMENTS; PropSpec[5].ulKind := PRSPEC_PROPID; PropSpec[5].propid := 99; SetLength(PropVariant,6); PropVariant[0].vt:=VT_LPWSTR; PropVariant[0].pwszVal:=PWideChar(Author); PropVariant[1].vt:=VT_LPWSTR; PropVariant[1].pwszVal:=PWideChar(Title); PropVariant[2].vt:= VT_LPWSTR; PropVariant[2].pwszVal:=PWideChar(Subject); PropVariant[3].vt:= VT_LPWSTR; PropVariant[3].pwszVal:=PWideChar(Keywords); PropVariant[4].vt:= VT_LPWSTR; PropVariant[4].pwszVal:=PWideChar(Comments); PropVariant[5].vt:= VT_LPWSTR; PropVariant[5].pwszVal:=PWideChar(Comments); OleCheck(PropStg.WriteMultiple(6, @PropSpec[0], @PropVariant[0], 2 )); PropStg.Commit(STGC_DEFAULT); end; end. 

这不是我的代码,但我已经成功地使用它。 它工作正常。 要检索属性,你可以这样做:

 mmProps2.Lines.Text := GetFileSummaryInfo(edtFile.Text); 

问候


Neftalí

我知道没有标准的方式来存储额外的元数据信息。 每个应用程序可以注册自己的属性选项卡,并可以以任何方式存储此元数据信息。

我相信你在谈论Windows照片库的图像标记功能。

信息存储在两个文件中:pictures.pd4和NavTree.state由盖尔比约克人谁想要删除这些信息 。

这存储在:C:\ Users \ YourUser \ AppData \ Local \ Microsoft \ Windows照片库。

有些人想出了文件格式。 但是我还没有发现任何内部的微软或外部的发布规范。

你也问过其他的文件属性可以通过这些设置

 FileSetAttr(FileName,Attribute) 

可以设置的属性:

  • faReadOnly
  • faHidden
  • faSysFile
  • faVolumeID
  • faDirectory
  • faArchive
  • faSymLink

//The following sets test.txt to a readonly and hidden file. FileSetAttr('C:\Test.txt',faReadOnly or faHidden);

该函数有一个布尔结果,您可以检查操作是否成功完成。

我正在开发一个标记应用程序,看来最好的答案是Windows图像组件API ,它具有读写各种图像格式(Exif,IPTC等)的元数据的实现。 文件系统中的文件的元数据和文件本身的元数据应该有区别 – 这是引用后者。

Getty Images还有一篇关于使用WIC API进行编程的好文章。