ICatRegister::UnRegisterClassImplCategories method

Removes one or more implemented category identifiers from a class.

Syntax


HRESULT UnRegisterClassImplCategories(
  [in] REFCLSID rclsid,
  [in] ULONG    cCategories,
  [in] CATID    rgcatid[]
);

Parameters

rclsid [in]: The class identifier.
cCategories [in]: The number of category CATIDs to be removed.
rgcatid [in]: An array of CATIDs that are to be removed. Only the category IDs specified in this array are removed.

Return value

This method can return the following values.

Return code	Description
S_OK	The method completed successfully.
E_INVALIDARG	One or more arguments are incorrect.

Remarks

In case of an error, this method does not ensure that the registry is restored to the state prior to the call. This method will be successful even if one or more of the category IDs specified are not registered for the class. This method can only be called by the owner of a class, usually as part of the de-installation of the component.

Requirements

Minimum supported client	Windows 2000 Professional [desktop apps only]
Minimum supported server	Windows 2000 Server [desktop apps only]
Header	ComCat.h
IDL	ComCat.idl
IID	IID_ICatRegister is defined as 0002E012-0000-0000-C000-000000000046