DECLARE_ONLY_AGGREGATABLE
Specifies that your object must be aggregated.
DECLARE_ONLY_AGGREGATABLE(
x
)
Parameters
- x
[in] The name of the class object you are defining as only aggregatable.
Remarks
DECLARE_ONLY_AGGREGATABLE causes an error (E_FAIL) if an attempt is made to CoCreate your object as nonaggregated object.
By default, CComCoClass contains the DECLARE_AGGREGATABLE macro, which specifies that your object can be aggregated. To override this default behavior, include DECLARE_ONLY_AGGREGATABLE in your class definition.
Example
class ATL_NO_VTABLE COnlyAggClass :
public CComObjectRoot,
public CComCoClass<COnlyAggClass, &CLSID_OnlyAggClass>
{
public:
COnlyAggClass()
{
}
DECLARE_ONLY_AGGREGATABLE(COnlyAggClass)
};
Requirements
Header: atlcom.h