Specifies the FMTID/PID identifier that programmatically identifies a property. Replaces SHCOLUMNID.
Syntax
typedef struct {
GUID fmtid;
DWORD pid;
} PROPERTYKEY;
Members
- fmtid
-
A unique GUID for the property.
- pid
A property identifier (PID). This parameter is not used as in SHCOLUMNID. It is recommended that you set this value to PID_FIRST_USABLE. Any value greater than or equal to 2 is acceptable.
Note Values of 0 and 1 are reserved and should not be used.
Remarks
As of Windows Vista, the
SHCOLUMNID structure is simply an alias for
PROPERTYKEY, as shown in this declaration from Shobjidl.h.
typedef PROPERTYKEY SHCOLUMNID;
SHCOLUMNID can be considered a legacy structure with PROPERTYKEY being the new, preferred form. PROPERTYKEY has a broader purpose than SHCOLUMNID, and the new name is more descriptive of its uses.
Structure Information
| Header and IDL files | wtypes.h, wtypes.idl |
|---|
| Minimum operating systems |
Windows Vista |
|---|