IEnumMediaTypes::Clone
| Microsoft DirectShow 9.0 |
IEnumMediaTypes::Clone
The Clone method makes a copy of the enumerator. The returned object starts with the same enumeration state as the original.
Syntax
HRESULT Clone( IEnumMediaTypes **ppEnum );
Parameters
ppEnum
[out] Receives a pointer to the IEnumMediaTypes interface of the new enumerator. The caller must release the interface.
Return Values
Returns one of the following HRESULT values**.**
| Value | Description |
| S_OK | Success. |
| E_OUTOFMEMORY | Insufficient memory. |
| E_POINTER | NULL pointer argument. |
| VFW_E_ENUM_OUT_OF_SYNC | The pin's state has changed and is now inconsistent with the enumerator. |
Remarks
If the set of media types changes, the enumerator is no longer consistent with the pin, and the method returns VFW_E_ENUM_OUT_OF_SYNC. Discard any data obtained from previous calls to the enumerator, because it might be invalid. Update the enumerator by calling the Reset method. You can then call the Clone method safely.
Requirements
Header: Declared in Strmif.h; include Dshow.h.
Library: Use Strmiids.lib.
See Also