IoWMISetSingleItem - NtDoc
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// wdm.h
NTSTATUS IoWMISetSingleItem(
[in] PVOID DataBlockObject,
[in] PUNICODE_STRING InstanceName,
[in] ULONG DataItemId,
[in] ULONG Version,
[in] ULONG ValueBufferSize,
[in] PVOID ValueBuffer
);
View the official Windows Driver Kit DDI referenceNo description available.
The IoWMISetSingleItem routine sets a single property in the data block instance that matches the specified WMI class and instance name.
DataBlockObject [in]Pointer to a WMI data block object. The caller opens the data block object for the WMI class with the IoWMIOpenBlock routine. The object must be opened with the WMIGUID_SET access right.
InstanceName [in]Specifies the name of the instance of the data block. This value corresponds to the value of the InstanceName property for the block.
DataItemId [in]Specifies the data item ID for the property to be set. The value of this parameter corresponds to the value declared in the WmiDataId qualifier for the property.
Version [in]Reserved for future use. Callers must set this parameter to zero.
ValueBufferSize [in]Specifies the size, in bytes, of the buffer passed in the ValueBuffer parameter.
ValueBuffer [in]Pointer to the buffer that contains the new value for the property specified by the DataItemId parameter.
The routine returns an NTSTATUS code. Possible return values include:
| Return code | Description |
|---|---|
| STATUS_SUCCESS | The operation succeeded. The value of the property within WMI data block instance is updated to the contents of the buffer pointed to by the ValueBuffer parameter. |
| STATUS_WMI_GUID_NOT_FOUND | No drivers implement the WMI class. |
| STATUS_WMI_INSTANCE_NOT_FOUND | No driver implements an instance of the WMI data block with InstanceName property equal to the value specified in the InstanceName parameter. |
| STATUS_WMI_ITEMID_NOT_FOUND | The WMI class does not contain a property with data item ID equal to the value of DataItemId. |
| STATUS_WMI_READ_ONLY | The data item ID in the data block is read-only. |
| STATUS_WMI_SET_FAILURE | The driver that implements the WMI data block instance is unable to update the property specified by DataItemId. |
IoWMISetSingleItem determines which drivers might support the specified WMI class and instance name. It issues an IRP_MN_CHANGE_SINGLE_ITEM request to each such driver. The driver that exports the data block instance with matching InstanceName property updates the specified property in the data block instance.
Drivers can also use IoWMISetSingleInstance to update every property of the WMI class instance simultaneously.