MFGetAttribute2UINT32asUINT64 Function
Gets an attribute whose value is two UINT32 values packed into a UINT64.
Syntax
HRESULT MFGetAttribute2UINT32asUINT64(
__in IMFAttributes *pAttributes,
__in REFGUID guidKey,
__out UINT32 *punHigh32,
__out UINT32 *punLow32
);
Parameter
pAttributes [in]
A pointer to the IMFAttributes interface of the attribute store.guidKey [in]
A GUID that identifies which value to retrieve. The attribute type must be MF_ATTRIBUTE_UINT64.punHigh32 [out]
Receives the high-order 32 bits.punLow32 [out]
Receives the low-order 32 bits.
Rückgabewert
The method returns an HRESULT. Possible values include, but are not limited to, those in the following table.
| Rückgabecode | Beschreibung |
|---|---|
| S_OK | The method succeeded. |
| MF_E_ATTRIBUTENOTFOUND | The specified key was not found. |
| MF_E_INVALIDTYPE | The attribute value is not a UINT64. |
Hinweise
Internally, this function calls IMFAttributes::GetUINT64 to get the UINT64 value, and Unpack2UINT32AsUINT64 to unpack the two 32-bit values.
Anforderungen
Mindestens unterstützter Client |
Windows Vista |
Mindestens unterstützter Server |
Windows Server 2008 |
Header |
Mfobjects.h (include Mfidl.h) |