Delphi WinAPI SHGetSpecialFolderLocation 获取特殊文件夹位置（特殊目录路径）PIDLIST_ABSOLUTE

Delphi WinAPI SHGetSpecialFolderLocation 获取特殊文件夹位置（特殊目录路径）

描述：检索指向特殊文件夹的ITEMIDLIST结构的指针。SHGetSpecialFolderLocation将来可能会不受支持，更改或不可用。而使用 SHGetFolderLocation。

原型：

HRESULT SHGetSpecialFolderLocation(
  HWND             hwnd,
  int              csidl,
  PIDLIST_ABSOLUTE *ppidl
);

参数：

• HWND  //父窗口句柄
• int　　  //文件夹的CSIDL值。
• PIDLIST_ABSOLUTE    //指定文件夹相对于名称空间根（桌面）的位置的 PIDL 值。调用应用程序负责使用 CoTaskMemFree 释放返回的IDList。

CSIDL（constant special item ID list）值提供了一种独特的独立于系统的方法来标识应用程序经常使用的特殊文件夹，但这些文件夹在任何给定的系统上可能没有相同的名称或位置。例如，系统文件夹在一个系统上可能是“C:Windows”，在另一个系统上可能是“C:Winnt”。这些常量在Shlobj.h中定义。

Constant/value	Description
CSIDL_ADMINTOOLS	Version 5.0. The file system directory that is used to store administrative tools for an individual user. The MMC will save customized consoles to this directory, and it will roam with the user.
FOLDERID_AdminTools
CSIDL_ALTSTARTUP	The file system directory that corresponds to the user's nonlocalized Startup program group. This value is recognized in Windows Vista for backward compatibility, but the folder itself no longer exists.
FOLDERID_Startup
CSIDL_APPDATA	Version 4.71. The file system directory that serves as a common repository for application-specific data. A typical path is C:Documents and SettingsusernameApplication Data.
FOLDERID_RoamingAppData
CSIDL_BITBUCKET	The virtual folder that contains the objects in the user's Recycle Bin.
FOLDERID_RecycleBinFolder
CSIDL_CDBURN_AREA	Version 6.0. The file system directory that acts as a staging area for files waiting to be written to a CD. A typical path is C:Documents and SettingsusernameLocal SettingsApplication DataMicrosoftCD Burning.
FOLDERID_CDBurning
CSIDL_COMMON_ADMINTOOLS	Version 5.0. The file system directory that contains administrative tools for all users of the computer.
FOLDERID_CommonAdminTools
CSIDL_COMMON_ALTSTARTUP	The file system directory that corresponds to the nonlocalized Startup program group for all users. This value is recognized in Windows Vista for backward compatibility, but the folder itself no longer exists.
FOLDERID_CommonStartup
CSIDL_COMMON_APPDATA	Version 5.0. The file system directory that contains application data for all users. A typical path is C:Documents and SettingsAll UsersApplication Data. This folder is used for application data that is not user specific. For example, an application can store a spell-check dictionary, a database of clip art, or a log file in the CSIDL_COMMON_APPDATA folder. This information will not roam and is available to anyone using the computer.
FOLDERID_ProgramData
CSIDL_COMMON_DESKTOPDIRECTORY	The file system directory that contains files and folders that appear on the desktop for all users. A typical path is C:Documents and SettingsAll UsersDesktop.
FOLDERID_PublicDesktop
CSIDL_COMMON_DOCUMENTS	The file system directory that contains documents that are common to all users. A typical path is C:Documents and SettingsAll UsersDocuments.
FOLDERID_PublicDocuments
CSIDL_COMMON_FAVORITES	The file system directory that serves as a common repository for favorite items common to all users.
FOLDERID_Favorites
CSIDL_COMMON_MUSIC	Version 6.0. The file system directory that serves as a repository for music files common to all users. A typical path is C:Documents and SettingsAll UsersDocumentsMy Music.
FOLDERID_PublicMusic
CSIDL_COMMON_OEM_LINKS	This value is recognized in Windows Vista for backward compatibility, but the folder itself is no longer used.
FOLDERID_CommonOEMLinks
CSIDL_COMMON_PICTURES	Version 6.0. The file system directory that serves as a repository for image files common to all users. A typical path is C:Documents and SettingsAll UsersDocumentsMy Pictures.
FOLDERID_PublicPictures
CSIDL_COMMON_PROGRAMS	The file system directory that contains the directories for the common program groups that appear on the Start menu for all users. A typical path is C:Documents and SettingsAll UsersStart MenuPrograms.
FOLDERID_CommonPrograms
CSIDL_COMMON_STARTMENU	The file system directory that contains the programs and folders that appear on the Start menu for all users. A typical path is C:Documents and SettingsAll UsersStart Menu.
FOLDERID_CommonStartMenu
CSIDL_COMMON_STARTUP	The file system directory that contains the programs that appear in the Startup folder for all users. A typical path is C:Documents and SettingsAll UsersStart MenuProgramsStartup.
FOLDERID_CommonStartup
CSIDL_COMMON_TEMPLATES	The file system directory that contains the templates that are available to all users. A typical path is C:Documents and SettingsAll UsersTemplates.
FOLDERID_CommonTemplates
CSIDL_COMMON_VIDEO	Version 6.0. The file system directory that serves as a repository for video files common to all users. A typical path is C:Documents and SettingsAll UsersDocumentsMy Videos.
FOLDERID_PublicVideos
CSIDL_COMPUTERSNEARME	The folder that represents other computers in your workgroup.
FOLDERID_NetworkFolder
CSIDL_CONNECTIONS	The virtual folder that represents Network Connections, that contains network and dial-up connections.
FOLDERID_ConnectionsFolder
CSIDL_CONTROLS	The virtual folder that contains icons for the Control Panel applications.
FOLDERID_ControlPanelFolder
CSIDL_COOKIES	The file system directory that serves as a common repository for Internet cookies. A typical path is C:Documents and SettingsusernameCookies.
FOLDERID_Cookies
CSIDL_DESKTOP	The virtual folder that represents the Windows desktop, the root of the namespace.
FOLDERID_Desktop
CSIDL_DESKTOPDIRECTORY	The file system directory used to physically store file objects on the desktop (not to be confused with the desktop folder itself). A typical path is C:Documents and SettingsusernameDesktop.
FOLDERID_Desktop
CSIDL_DRIVES	The virtual folder that represents My Computer, containing everything on the local computer: storage devices, printers, and Control Panel. The folder can also contain mapped network drives.
FOLDERID_ComputerFolder
CSIDL_FAVORITES	The file system directory that serves as a common repository for the user's favorite items. A typical path is C:Documents and SettingsusernameFavorites.
FOLDERID_Favorites
CSIDL_FONTS	A virtual folder that contains fonts. A typical path is C:WindowsFonts.
FOLDERID_Fonts
CSIDL_HISTORY	The file system directory that serves as a common repository for Internet history items.
FOLDERID_History
CSIDL_INTERNET	A virtual folder for Internet Explorer.
FOLDERID_InternetFolder
CSIDL_INTERNET_CACHE	Version 4.72. The file system directory that serves as a common repository for temporary Internet files. A typical path is C:Documents and SettingsusernameLocal SettingsTemporary Internet Files.
FOLDERID_InternetCache
CSIDL_LOCAL_APPDATA	Version 5.0. The file system directory that serves as a data repository for local (nonroaming) applications. A typical path is C:Documents and SettingsusernameLocal SettingsApplication Data.
FOLDERID_LocalAppData
CSIDL_MYDOCUMENTS	Version 6.0. The virtual folder that represents the My Documents desktop item. This value is equivalent to CSIDL_PERSONAL.
FOLDERID_Documents
CSIDL_MYMUSIC	The file system directory that serves as a common repository for music files. A typical path is C:Documents and SettingsUserMy DocumentsMy Music.
FOLDERID_Music
CSIDL_MYPICTURES	Version 5.0. The file system directory that serves as a common repository for image files. A typical path is C:Documents and SettingsusernameMy DocumentsMy Pictures.
FOLDERID_Pictures
CSIDL_MYVIDEO	Version 6.0. The file system directory that serves as a common repository for video files. A typical path is C:Documents and SettingsusernameMy DocumentsMy Videos.
FOLDERID_Videos
CSIDL_NETHOOD	A file system directory that contains the link objects that may exist in the My Network Places virtual folder. It is not the same as CSIDL_NETWORK, which represents the network namespace root. A typical path is C:Documents and SettingsusernameNetHood.
FOLDERID_NetHood
CSIDL_NETWORK	A virtual folder that represents Network Neighborhood, the root of the network namespace hierarchy.
FOLDERID_NetworkFolder
CSIDL_PERSONAL	Version 6.0. The virtual folder that represents the My Documents desktop item. This is equivalent to CSIDL_MYDOCUMENTS.
FOLDERID_Documents	Previous to Version 6.0. The file system directory used to physically store a user's common repository of documents. A typical path is C:Documents and SettingsusernameMy Documents. This should be distinguished from the virtual My Documents folder in the namespace. To access that virtual folder, use SHGetFolderLocation, which returns the ITEMIDLIST for the virtual location, or refer to the technique described in Managing the File System.
CSIDL_PRINTERS	The virtual folder that contains installed printers.
FOLDERID_PrintersFolder
CSIDL_PRINTHOOD	The file system directory that contains the link objects that can exist in the Printers virtual folder. A typical path is C:Documents and SettingsusernamePrintHood.
FOLDERID_PrintHood
CSIDL_PROFILE	Version 5.0. The user's profile folder. A typical path is C:Usersusername. Applications should not create files or folders at this level; they should put their data under the locations referred to by CSIDL_APPDATA or CSIDL_LOCAL_APPDATA. However, if you are creating a new Known Folder the profile root referred to by CSIDL_PROFILE is appropriate.
FOLDERID_Profile
CSIDL_PROGRAM_FILES	Version 5.0. The Program Files folder. A typical path is C:Program Files.
FOLDERID_ProgramFiles
CSIDL_PROGRAM_FILESX86
FOLDERID_ProgramFilesX86
CSIDL_PROGRAM_FILES_COMMON	Version 5.0. A folder for components that are shared across applications. A typical path is C:Program FilesCommon. Valid only for Windows XP.
FOLDERID_ProgramFilesCommon
CSIDL_PROGRAM_FILES_COMMONX86
FOLDERID_ProgramFilesCommonX86
CSIDL_PROGRAMS	The file system directory that contains the user's program groups (which are themselves file system directories). A typical path is C:Documents and SettingsusernameStart MenuPrograms.
FOLDERID_Programs
CSIDL_RECENT	The file system directory that contains shortcuts to the user's most recently used documents. A typical path is C:Documents and SettingsusernameMy Recent Documents. To create a shortcut in this folder, use SHAddToRecentDocs. In addition to creating the shortcut, this function updates the Shell's list of recent documents and adds the shortcut to the My Recent Documents submenu of the Start menu.
FOLDERID_Recent
CSIDL_RESOURCES	Windows Vista. The file system directory that contains resource data. A typical path is C:WindowsResources.
FOLDERID_ResourceDir
CSIDL_RESOURCES_LOCALIZED
FOLDERID_LocalizedResourcesDir
CSIDL_SENDTO	The file system directory that contains Send To menu items. A typical path is C:Documents and SettingsusernameSendTo.
FOLDERID_SendTo
CSIDL_STARTMENU	The file system directory that contains Start menu items. A typical path is C:Documents and SettingsusernameStart Menu.
FOLDERID_StartMenu
CSIDL_STARTUP	The file system directory that corresponds to the user's Startup program group. The system starts these programs whenever the associated user logs on. A typical path is C:Documents and SettingsusernameStart MenuProgramsStartup.
FOLDERID_Startup
CSIDL_SYSTEM	Version 5.0. The Windows System folder. A typical path is C:WindowsSystem32.
FOLDERID_System
CSIDL_SYSTEMX86
FOLDERID_SystemX86
CSIDL_TEMPLATES	The file system directory that serves as a common repository for document templates. A typical path is C:Documents and SettingsusernameTemplates.
FOLDERID_Templates
CSIDL_WINDOWS	Version 5.0. The Windows directory or SYSROOT. This corresponds to the %windir% or %SYSTEMROOT% environment variables. A typical path is C:Windows.
FOLDERID_Windows
Flags
CSIDL_FLAG_CREATE	Version 5.0. Combine with another CSIDL to force the creation of the associated folder if it does not exist.
KF_FLAG_CREATE
CSIDL_FLAG_DONT_UNEXPAND	Combine with another CSIDL constant to ensure the expansion of environment variables.
KF_FLAG_DONT_UNEXPAND
CSIDL_FLAG_DONT_VERIFY	Combine with another CSIDL constant, except for CSIDL_FLAG_CREATE, to return an unverified folder path with no attempt to create or initialize the folder.
KF_FLAG_DONT_VERIFY
CSIDL_FLAG_NO_ALIAS	Combine with another CSIDL constant to ensure the retrieval of the true system path for the folder, free of any aliased placeholders such as %USERPROFILE%, returned by SHGetFolderLocation. This flag has no effect on paths returned by SHGetFolderPath.
KF_FLAG_NO_ALIAS
CSIDL_FLAG_PER_USER_INIT
CSIDL_FLAG_MASK	A mask for any valid CSIDL flag value.

创建时间：2020.11.24　　更新时间：