MFTOPONODE_ATTRIBUTE_UPDATE structure (mfidl.h)
Specifies a new attribute value for a topology node.
Syntax
typedef struct _MFTOPONODE_ATTRIBUTE_UPDATE {
TOPOID NodeId;
GUID guidAttributeKey;
MF_ATTRIBUTE_TYPE attrType;
union {
UINT32 u32;
UINT64 u64;
double d;
};
} MFTOPONODE_ATTRIBUTE_UPDATE;
Members
NodeId
The identifier of the topology node to update. To get the identifier of a topology node, call IMFTopologyNode::GetTopoNodeID.
guidAttributeKey
GUID that specifies the attribute to update.
attrType
Attribute type, specified as a member of the MF_ATTRIBUTE_TYPE enumeration.
u32
Attribute value (unsigned 32-bit integer). This member is used when attrType equals MF_ATTRIBUTE_UINT32.
u64
Attribute value (unsigned 32-bit integer). This member is used when attrType equals MF_ATTRIBUTE_UINT64. See Remarks.
d
Attribute value (floating point). This member is used when attrType equals MF_ATTRIBUTE_DOUBLE.
Remarks
Due to an error in the structure declaration, the u64 member is declared as a 32-bit integer, not a 64-bit integer. Therefore, any 64-bit value passed to the IMFTopologyNodeAttributeEditor::UpdateNodeAttributes method is truncated to 32 bits.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client | Windows Vista [desktop apps only] |
| Minimum supported server | Windows Server 2008 [desktop apps only] |
| Header | mfidl.h |