Geoff Chappell - Software Analyst
The IRegItemCustomAttributes interface has just the one method (after the IUnknown methods):
HRESULT GetCustomAttributes (PCITEMID_CHILD, SFGAOF, ControlPanelCategoryInfo *, SFGAOF *);
in which ControlPanelCategoryInfo is invented as a typedef for an undocumented structure:
typedef struct tagControlPanelCategoryInfo ControlPanelCategoryInfo;
The IRegItemCustomAttributes interface is implemented in the SHELL32.DLL version 6.00 from Windows Vista, and higher.
Though new for Windows Vista, this interface is not documented by Microsoft in the January 2007 edition of the Software Development Kit (SDK) for Windows Vista.