ICatRegister::UnRegisterClassReqCategories
A version of this page is also available for
4/8/2010
This method removes one or more required category identifiers from a class.
Syntax
HRESULT UnRegisterClassReqCategories(
REFCLSID rclsid,
ULONG cCategories,
CATID rgcatid[]
);
Parameters
- rclsid
[in] Class identifier of the relevant class to be manipulated.
- cCategories
[in] Number of category CATIDs to remove.
- rgcatid
[in] Array of cCategories CATID that are to be removed. Only the category identifiers specified in this array are removed.
Return Value
If the method succeeds, the return value is S_OK.
If one or more arguments are incorrect, the method returns E_INVALIDARG.
Remarks
In case of an error, this function does not ensure that the Registry is restored to the state prior to the call. The call will be successful even if one or more of the category identifiers specified are not registered for the class.
To determine whether the platform supports this interface, see Determining Supported COM APIs.
Requirements
| Header | comcat.h, comcat.idl |
| Library | ole32.lib, uuid.lib |
| Windows Embedded CE | Windows CE 3.0 and later |
| Windows Mobile | Windows Mobile Version 5.0 and later |
See Also
Reference
ICatRegister::RegisterCategories
ICatRegister::RegisterClassImplCategories
ICatRegister::UnRegisterCategories
ICatRegister::UnRegisterClassImplCategories
ICatRegister::RegisterClassReqCategories