KF_CATEGORY enumeration (shobjidl_core.h)

Value that represent a category by which a folder registered with the Known Folder system can be classified.

Syntax

typedef enum KF_CATEGORY {
  KF_CATEGORY_VIRTUAL = 1,
  KF_CATEGORY_FIXED = 2,
  KF_CATEGORY_COMMON = 3,
  KF_CATEGORY_PERUSER = 4
} ;


`KF_CATEGORY_VIRTUAL` Value: 1 Virtual folders are not part of the file system, which is to say that they have no path. For example, Control Panel and Printers are virtual folders. A number of features such as folder path and redirection do not apply to this category.
`KF_CATEGORY_FIXED` Value: 2 Fixed file system folders are not managed by the Shell and are usually given a permanent path when the system is installed. For example, the Windows and Program Files folders are fixed folders. A number of features such as redirection do not apply to this category.
`KF_CATEGORY_COMMON` Value: 3 Common folders are those file system folders used for sharing data and settings, accessible by all users of a system. For example, all users share a common Documents folder as well as their per-user Documents folder.
`KF_CATEGORY_PERUSER` Value: 4 Per-user folders are those stored under each user's profile and accessible only by that user. For example, `%USERPROFILE%\Pictures`. This category of folder usually supports many features including aliasing, redirection and customization. Note The user profile root folder (FOLDERID_Profile) does not support redirection.

The KF_CATEGORY type is defined in Shobjidl.h as shown here.

typedef DWORD KF_CATEGORY;

Requirement	Value
Minimum supported client	Windows Vista [desktop apps only]
Minimum supported server	Windows Server 2008 [desktop apps only]
Header	shobjidl_core.h (include Shobjidl.h)