Defined as follows:
#define IMPLTYPEFLAG_FDEFAULT    0x1
#define IMPLTYPEFLAG_FSOURCE        0x2
#define IMPLTYPEFLAG_FRESTRICTED    0x4
#define IMPLTYPEFLAG_FDEFAULTVTABLE    0x800
 | Value | Description | 
|---|---|
| IMPLTYPEFLAG_FDEFAULT | The interface or dispinterface represents the default for the source or sink. | 
| IMPLTYPEFLAG_FSOURCE | This member of a coclass is called rather than implemented. | 
| IMPLTYPEFLAG_FRESTRICTED | The member should not be displayed or programmable by users. | 
| IMPLTYPEFLAG_FDEFAULTVTABLE | Sinks receive events through the VTBL. |